.editorconfig

@@ -1,6 +1,6 @@
 root = true
 
-[*.{js,jsm,mjs,json,html,css,pdf.link}]
+[*.{js,jsm,html,css}]
 charset = utf-8
 end_of_line = lf
 indent_size = 2
@@ -9,12 +9,9 @@ insert_final_newline = true
 max_line_length = 80
 trim_trailing_whitespace = true
 
-[*.{json,pdf.link}]
-max_line_length = off
-
 [*.md]
-max_line_length = off
+max_line_length = 0
 trim_trailing_whitespace = false
 
 [COMMIT_EDITMSG]
-max_line_length = off
+max_line_length = 0

.eslintignore

@@ -3,10 +3,15 @@ l10n/
 docs/
 node_modules/
 external/bcmaps/
+external/webL10n/
+external/cmapscompress/
 external/builder/fixtures/
 external/builder/fixtures_esprima/
-external/quickjs/
+external/quickjs/quickjs-eval.js
+src/shared/cffStandardStrings.js
+src/shared/fonts_utils.js
 test/tmp/
+test/features/
 test/pdfs/
-web/locale/
+test/resources/
 *~/

.eslintrc

@@ -1,12 +1,11 @@
 {
   "parserOptions": {
-    "ecmaVersion": 2022,
+    "ecmaVersion": 2021,
     "sourceType": "module",
   },
 
   "plugins": [
     "import",
-    "json",
     "mozilla",
     "no-unsanitized",
     "sort-exports",
@@ -14,36 +13,26 @@
   ],
 
   "extends": [
-    "plugin:json/recommended",
     "plugin:prettier/recommended"
   ],
 
   "env": {
     "browser": true,
-    "es2022": true,
+    "es2021": true,
     "worker": true,
+    "amd": true,
   },
 
   "globals": {
-    "PDFJSDev": "readonly",
+    "PDFJSDev": false,
-    "__non_webpack_import__": "readonly",
+    "exports": false,
+    "SystemJS": false,
   },
 
   "rules": {
     // Plugins
-    "import/export": "error",
-    "import/exports-last": "error",
     "import/extensions": ["error", "always", { "ignorePackages": true, }],
-    "import/first": "error",
+    "import/no-unresolved": "error",
-    "import/named": "error",
-    "import/no-cycle": "error",
-    "import/no-empty-named-blocks": "error",
-    "import/no-commonjs": "error",
-    "import/no-mutable-exports": "error",
-    "import/no-self-import": "error",
-    "import/no-unresolved": ["error", {
-      "ignore": ["display", "pdfjs", "pdfjs-lib", "pdfjs-web", "web", "fluent-bundle", "fluent-dom"],
-    }],
     "mozilla/avoid-removeChild": "error",
     "mozilla/use-includes-instead-of-indexOf": "error",
     "no-unsanitized/method": "error",
@@ -52,33 +41,8 @@
       "ignoreCase": true,
     }],
     "unicorn/no-abusive-eslint-disable": "error",
-    "unicorn/no-array-push-push": "error",
     "unicorn/no-instanceof-array": "error",
-    "unicorn/no-invalid-remove-event-listener": "error",
-    "unicorn/no-new-buffer": "error",
-    "unicorn/no-typeof-undefined": ["error", {
-      "checkGlobalVariables": false,
-    }],
-    "unicorn/no-useless-promise-resolve-reject": "error",
-    "unicorn/no-useless-spread": "error",
-    "unicorn/prefer-array-find": "error",
-    "unicorn/prefer-array-flat": "error",
-    "unicorn/prefer-array-flat-map": "error",
-    "unicorn/prefer-array-index-of": "error",
-    "unicorn/prefer-array-some": "error",
-    "unicorn/prefer-at": "error",
-    "unicorn/prefer-date-now": "error",
-    "unicorn/prefer-dom-node-append": "error",
-    "unicorn/prefer-dom-node-remove": "error",
-    "unicorn/prefer-logical-operator-over-ternary": "error",
-    "unicorn/prefer-modern-dom-apis": "error",
-    "unicorn/prefer-modern-math-apis": "error",
-    "unicorn/prefer-negative-index": "error",
-    "unicorn/prefer-optional-catch-binding": "error",
-    "unicorn/prefer-regexp-test": "error",
-    "unicorn/prefer-string-replace-all": "error",
     "unicorn/prefer-string-starts-ends-with": "error",
-    "unicorn/prefer-ternary": ["error", "only-single-line"],
 
     // Possible errors
     "for-direction": "error",
@@ -92,26 +56,22 @@
     "no-dupe-keys": "error",
     "no-duplicate-case": "error",
     "no-empty": ["error", { "allowEmptyCatch": true, }],
-    "no-empty-character-class": "error",
     "no-ex-assign": "error",
     "no-extra-boolean-cast": "error",
     "no-func-assign": "error",
     "no-inner-declarations": ["error", "functions"],
     "no-invalid-regexp": "error",
     "no-irregular-whitespace": "error",
-    "no-loss-of-precision": "error",
     "no-obj-calls": "error",
     "no-promise-executor-return": "error",
     "no-regex-spaces": "error",
     "no-setter-return": "error",
     "no-sparse-arrays": "error",
-    "no-template-curly-in-string": "error",
     "no-unexpected-multiline": "error",
     "no-unreachable": "error",
     "no-unsafe-finally": "error",
     "no-unsafe-negation": "error",
     "no-unsafe-optional-chaining": ["error", { "disallowArithmeticOperators": true }],
-    "no-unused-private-class-members": "error",
     "use-isnan": ["error", { "enforceForIndexOf": true, }],
     "valid-typeof": ["error", { "requireStringLiterals": true, }],
 
@@ -140,12 +100,10 @@
     "no-implied-eval": "error",
     "no-iterator": "error",
     "no-lone-blocks": "error",
-    "no-lonely-if": "error",
     "no-multi-str": "error",
-    "no-new": "error",
     "no-new-func": "error",
-    "no-new-symbol": "error",
     "no-new-wrappers": "error",
+    "no-new": "error",
     "no-octal-escape": "error",
     "no-octal": "error",
     "no-redeclare": "error",
@@ -161,7 +119,6 @@
     "no-useless-escape": "error",
     "no-useless-return": "error",
     "prefer-promise-reject-errors": "error",
-    "prefer-spread": "error",
     "wrap-iife": ["error", "any"],
     "yoda": ["error", "never", {
       "exceptRange": true,
@@ -171,6 +128,7 @@
     "strict": ["off", "global"],
 
     // Variables
+    "no-catch-shadow": "error",
     "no-delete-var": "error",
     "no-label-var": "error",
     "no-shadow": "error",
@@ -178,7 +136,7 @@
     "no-undef-init": "error",
     "no-undef": ["error", { "typeof": true, }],
     "no-unused-vars": ["error", {
-      "vars": "all",
+      "vars": "local",
       "args": "none",
     }],
     "no-use-before-define": ["error", {
@@ -187,6 +145,9 @@
       "variables": false,
     }],
 
+    // Node.js and CommonJS
+    "no-buffer-constructor": "error",
+
     // Stylistic Issues
     "lines-between-class-members": ["error", "always"],
     "max-len": ["error", {
@@ -200,26 +161,10 @@
     "no-nested-ternary": "error",
     "no-new-object": "error",
     "no-restricted-syntax": ["error",
-      {
-        "selector": "BinaryExpression[operator='instanceof'][right.name='Object']",
-        "message": "Use `typeof` rather than `instanceof Object`.",
-      },
       {
         "selector": "CallExpression[callee.name='assert'][arguments.length!=2]",
         "message": "`assert()` must always be invoked with two arguments.",
       },
-      {
-        "selector": "CallExpression[callee.name='isCmd'][arguments.length<2]",
-        "message": "Use `instanceof Cmd` rather than `isCmd()` with one argument.",
-      },
-      {
-        "selector": "CallExpression[callee.name='isDict'][arguments.length<2]",
-        "message": "Use `instanceof Dict` rather than `isDict()` with one argument.",
-      },
-      {
-        "selector": "CallExpression[callee.name='isName'][arguments.length<2]",
-        "message": "Use `instanceof Name` rather than `isName()` with one argument.",
-      },
       {
         "selector": "NewExpression[callee.name='Cmd']",
         "message": "Use `Cmd.get()` rather than `new Cmd()`.",
@@ -234,7 +179,6 @@
       },
     ],
     "no-unneeded-ternary": "error",
-    "operator-assignment": "error",
     "prefer-exponentiation-operator": "error",
     "spaced-comment": ["error", "always", {
       "block": {
@@ -243,9 +187,9 @@
     }],
 
     // ECMAScript 6
-    "arrow-body-style": ["error", "as-needed"],
     "constructor-super": "error",
     "no-class-assign": "error",
+    "no-confusing-arrow": "error",
     "no-const-assign": "error",
     "no-dupe-class-members": "error",
     "no-duplicate-imports": "error",
@@ -253,12 +197,11 @@
     "no-useless-computed-key": "error",
     "no-useless-constructor": "error",
     "no-useless-rename": "error",
-    "no-var": "error",
+    "no-var": "off",
     "object-shorthand": ["error", "always", {
       "avoidQuotes": true,
     }],
     "prefer-const": "error",
-    "require-yield": "error",
     "sort-imports": ["error", {
       "ignoreCase": true,
     }],

.git-blame-ignore-revs

@@ -1,6 +0,0 @@
-# Auto-format `.js` files with ESLint/Prettier
-de36b2aabab2b7fd647d9591f959c4540129541d
-# Auto-format `.css` files with Stylelint/Prettier
-8aa2718d225ad701a5b8a2788b42d221f1e4327d
-# Auto-format `.json` files with Prettier
-29de9bdce6c9785574994fda0e51533d796a9bb4

.gitattributes

@@ -4,7 +4,7 @@
 *.css        text eol=lf
 *.html       text eol=lf
 *.md         text eol=lf
-*.ftl        text eol=lf
+*.properties text eol=lf
 *.yml        text eol=lf
 *.json       text eol=lf
 *.config     text eol=lf

.github/CODEOWNERS

@@ -1 +0,0 @@
-l10n/en-US/*.ftl @mozilla/pdfjs-l10n

.github/dependabot.yml

@@ -1,8 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    labels:
-      - "dependencies"

.github/fluent_linter_config.yml

@@ -1,27 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-# See https://github.com/mozilla-l10n/moz-fluent-linter/blob/main/src/fluent_linter/config.yml
-# for details
-
----
-ID01:
-    enabled: true
-    exclusions:
-        messages: []
-        files: []
-ID02:
-    enabled: true
-    min_length: 9
-    exclusions:
-        messages: []
-        files: []
-CO01:
-    enabled: true
-    brands:
-        - Firefox
-        - Mozilla
-    exclusions:
-        files: []
-        messages: []

.github/requirements.txt

@@ -1 +0,0 @@
-moz-fluent-linter==0.4.*

.github/workflows/ci.yml

@@ -1,37 +1,14 @@
 name: CI
 on: [push, pull_request]
-permissions:
-  contents: read
-
 jobs:
-  test:
+  build:
-    name: Test
     runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        node-version: [18, lts/*, latest]
-
     steps:
-      - name: Checkout repository
+      - uses: actions/checkout@v2
-        uses: actions/checkout@v4
+      - name: Use Node.js 14 LTS
+        uses: actions/setup-node@v1
         with:
-          fetch-depth: 0
+          node-version: 14.x
-
+      - run: npm install -g gulp-cli
-      - name: Use Node.js ${{ matrix.node-version }}
+      - run: npm install
-        uses: actions/setup-node@v4
+      - run: npm test
-        with:
-          node-version: ${{ matrix.node-version }}
-
-      - name: Install Gulp
-        run: npm install -g gulp-cli
-
-      - name: Install other dependencies
-        run: npm install
-
-      - name: Run external tests
-        run: gulp externaltest
-
-      - name: Run CLI unit tests
-        run: gulp unittestcli

.github/workflows/codeql.yml

@@ -1,35 +0,0 @@
-name: CodeQL
-on: [push, pull_request]
-permissions:
-  contents: read
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-
-    permissions:
-      security-events: write
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [javascript]
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
-        with:
-          languages: ${{ matrix.language }}
-          queries: security-and-quality
-
-      - name: Autobuild CodeQL
-        uses: github/codeql-action/autobuild@v3
-
-      - name: Perform CodeQL analysis
-        uses: github/codeql-action/analyze@v3

.github/workflows/fluent_linter.yml

@@ -1,42 +0,0 @@
-name: Lint Fluent Reference Files
-on:
-  push:
-    paths:
-      - 'l10n/en-US/**.ftl'
-      - '.github/fluent_linter_config.yml'
-      - '.github/workflows/fluent_linter.yml'
-    branches:
-      - master
-  pull_request:
-    paths:
-      - 'l10n/en-US/**.ftl'
-      - '.github/fluent_linter_config.yml'
-      - '.github/workflows/fluent_linter.yml'
-    branches:
-      - master
-  workflow_dispatch:
-permissions:
-  contents: read
-
-jobs:
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Use Python 3.12
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.12'
-          cache: 'pip'
-
-      - name: Install Fluent dependencies
-        run: |
-          pip install -r .github/requirements.txt
-
-      - name: Lint Fluent reference files
-        run: |
-          moz-fluent-lint ./l10n/en-US --config .github/fluent_linter_config.yml

.github/workflows/font_tests.yml

@@ -1,64 +0,0 @@
-name: Font tests
-on:
-  push:
-    paths:
-      - 'gulpfile.mjs'
-      - 'src/**'
-      - 'test/test.mjs'
-      - 'test/font/**'
-      - '.github/workflows/font_tests.yml'
-    branches:
-      - master
-  pull_request:
-    paths:
-      - 'gulpfile.mjs'
-      - 'src/**'
-      - 'test/test.mjs'
-      - 'test/font/**'
-      - '.github/workflows/font_tests.yml'
-    branches:
-      - master
-  workflow_dispatch:
-permissions:
-  contents: read
-
-jobs:
-  test:
-    name: Test
-
-    strategy:
-      fail-fast: false
-      matrix:
-        node-version: [lts/*]
-        os: [windows-latest, ubuntu-latest]
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{ matrix.node-version }}
-
-      - name: Install Gulp
-        run: npm install -g gulp-cli
-
-      - name: Install other dependencies
-        run: npm install
-
-      - name: Use Python 3.12
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.12'
-          cache: 'pip'
-
-      - name: Install Fonttools
-        run: pip install fonttools
-
-      - name: Run font tests
-        run: gulp fonttest --headless

.github/workflows/lint.yml

@@ -1,37 +0,0 @@
-name: Lint
-on: [push, pull_request]
-permissions:
-  contents: read
-
-jobs:
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        node-version: [lts/*]
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{ matrix.node-version }}
-
-      - name: Install Gulp
-        run: npm install -g gulp-cli
-
-      - name: Install other dependencies
-        run: npm install
-
-      - name: Run lint
-        run: gulp lint
-
-      - name: Run lint-chromium
-        run: gulp lint-chromium

.github/workflows/publish_website.yml

@@ -1,72 +0,0 @@
-name: Publish website
-on:
-  push:
-    branches:
-      - master
-permissions:
-  contents: read
-
-jobs:
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        node-version: [lts/*]
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{ matrix.node-version }}
-
-      - name: Install Gulp
-        run: npm install -g gulp-cli
-
-      - name: Install other dependencies
-        run: npm install
-
-      - name: Build the website
-        run: gulp web
-
-      - name: Archive the website
-        shell: sh
-        run: |
-          chmod -c -R +rX "$INPUT_PATH" | while read line; do
-            echo "::warning title=Invalid file permissions automatically fixed::$line"
-          done
-          tar \
-            --dereference --hard-dereference \
-            --directory "$INPUT_PATH" \
-            -cvf "$RUNNER_TEMP/website.tar" \
-            --exclude=.git \
-            --exclude=.github \
-            .
-        env:
-          INPUT_PATH: build/gh-pages
-
-      - name: Upload the website
-        uses: actions/upload-artifact@v4
-        with:
-          name: github-pages
-          path: ${{ runner.temp }}/website.tar
-          retention-days: 1
-          if-no-files-found: error
-
-  deploy:
-    name: Deploy
-    runs-on: ubuntu-latest
-    needs: build
-    permissions:
-      pages: write  # Required to deploy to GitHub Pages.
-      id-token: write  # Required to verify that the deployment originates from this workflow.
-
-    steps:
-      - name: Deploy the website
-        uses: actions/deploy-pages@v4

.github/workflows/types_tests.yml

@@ -1,34 +0,0 @@
-name: Types tests
-on: [push, pull_request]
-permissions:
-  contents: read
-
-jobs:
-  test:
-    name: Test
-    runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        node-version: [lts/*]
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{ matrix.node-version }}
-
-      - name: Install Gulp
-        run: npm install -g gulp-cli
-
-      - name: Install other dependencies
-        run: npm install
-
-      - name: Run types tests
-        run: gulp typestest

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "test/ttx/fonttools-code"]
+	path = test/ttx/fonttools-code
+	url = https://github.com/behdad/fonttools.git

.prettierignore

@@ -1,12 +0,0 @@
-build/
-l10n/
-docs/
-node_modules/
-external/bcmaps/
-external/builder/fixtures/
-external/builder/fixtures_esprima/
-external/quickjs/
-test/tmp/
-test/pdfs/
-web/locale/
-*~/

.prettierrc

@@ -5,14 +5,5 @@
   "semi": true,
   "tabWidth": 2,
   "trailingComma": "es5",
-  "useTabs": false,
+  "useTabs": false
-
-  "overrides": [
-    {
-      files: ["tsconfig.json"],
-      options: {
-        parser: "json",
-      },
-    },
-  ]
 }

.stylelintignore

@@ -3,10 +3,15 @@ l10n/
 docs/
 node_modules/
 external/bcmaps/
+external/webL10n/
+external/cmapscompress/
 external/builder/fixtures/
 external/builder/fixtures_esprima/
-external/quickjs/
+src/shared/cffStandardStrings.js
+src/shared/fonts_utils.js
 test/tmp/
+test/features/
 test/pdfs/
-web/locale/
+test/resources/
+test/font/*_spec.js
 *~/

.stylelintrc

@@ -3,23 +3,16 @@
     "stylelint-prettier"
   ],
 
-  "rules": {
+  "extends": [
-    "prettier/prettier": true,
+    "stylelint-prettier/recommended"
+  ],
 
-    "alpha-value-notation": "number",
+
+  "rules": {
     "block-no-empty": true,
-    "color-function-notation": "modern",
-    "color-hex-length": "short",
-    "color-no-invalid-hex": true,
-    "declaration-block-no-duplicate-properties": true,
-    "declaration-block-no-redundant-longhand-properties": true,
-    "declaration-property-value-disallowed-list": {
-      "float": ["inline-start", "inline-end"]
-    },
     "length-zero-no-unit": [true, {
       ignore: ["custom-properties"]
     }],
-    "selector-pseudo-element-colon-notation": "double",
     "shorthand-property-no-redundant-values": true,
   },
 }

README.md

@@ -14,7 +14,7 @@ get involved, visit:
 + [Issue Reporting Guide](https://github.com/mozilla/pdf.js/blob/master/.github/CONTRIBUTING.md)
 + [Code Contribution Guide](https://github.com/mozilla/pdf.js/wiki/Contributing)
 + [Frequently Asked Questions](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions)
-+ [Good Beginner Bugs](https://github.com/mozilla/pdf.js/issues?direction=desc&labels=good-beginner-bug&page=1&sort=created&state=open)
++ [Good Beginner Bugs](https://github.com/mozilla/pdf.js/issues?direction=desc&labels=5-good-beginner-bug&page=1&sort=created&state=open)
 + [Projects](https://github.com/mozilla/pdf.js/projects)
 
 Feel free to stop by our [Matrix room](https://chat.mozilla.org/#/room/#pdfjs:mozilla.org) for questions or guidance.
@@ -23,12 +23,13 @@ Feel free to stop by our [Matrix room](https://chat.mozilla.org/#/room/#pdfjs:mo
 
 ### Online demo
 
-Please note that the "Modern browsers" version assumes native support for the
+Please note that the "Modern browsers" version assumes native support for
-latest JavaScript features; please also see [this wiki page](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support).
+features such as e.g. `async`/`await`, `ReadableStream`, optional chaining, and
+nullish coalescing.
 
 + Modern browsers: https://mozilla.github.io/pdf.js/web/viewer.html
 
-+ Older browsers: https://mozilla.github.io/pdf.js/legacy/web/viewer.html
++ Older browsers: https://mozilla.github.io/pdf.js/es5/web/viewer.html
 
 ### Browser Extensions
 
@@ -53,19 +54,14 @@ To get a local copy of the current code, clone it using git:
 
 Next, install Node.js via the [official package](https://nodejs.org) or via
 [nvm](https://github.com/creationix/nvm). You need to install the gulp package
-globally (see also [gulp's getting started](https://github.com/gulpjs/gulp/tree/master/docs/getting-started)):
+globally (see also [gulp's getting started](https://github.com/gulpjs/gulp/blob/master/docs/getting-started.md#getting-started)):
 
-    $ npm install -g gulp-cli@^2.3.0
+    $ npm install -g gulp-cli
-
-If you prefer to not install `gulp-cli` globally, you have to prefix all the `gulp` commands with `npx` (for example, `npx gulp server` instead of `gulp server`).
 
 If everything worked out, install all dependencies for PDF.js:
 
     $ npm install
 
-> [!NOTE]
-> On MacOS M1/M2 you may see some `node-gyp`-related errors when running `npm install`. This is because one of our dependencies, `"canvas"`, does not provide pre-built binaries for this platform and instead `npm` will try to build it from source. Please make sure to first install the necessary native dependencies using `brew`: https://github.com/Automattic/node-canvas#compiling.
-
 Finally, you need to start a local web server as some browsers do not allow opening
 PDF files using a `file://` URL. Run:
 
@@ -75,7 +71,7 @@ and then you can open:
 
 + http://localhost:8888/web/viewer.html
 
-Please keep in mind that this assumes the latest version of Mozilla Firefox; refer to [Building PDF.js](https://github.com/mozilla/pdf.js/blob/master/README.md#building-pdfjs) for non-development usage of the PDF.js library.
+Please keep in mind that this requires a modern and fully up-to-date browser; refer to [Building PDF.js](https://github.com/mozilla/pdf.js/blob/master/README.md#building-pdfjs) for non-development usage of the PDF.js library.
 
 It is also possible to view all test PDF files on the right side by opening:
 
@@ -90,9 +86,9 @@ viewer, run:
 
 If you need to support older browsers, run:
 
-    $ gulp generic-legacy
+    $ gulp generic-es5
 
-This will generate `pdf.js` and `pdf.worker.js` in the `build/generic/build/` directory (respectively `build/generic-legacy/build/`).
+This will generate `pdf.js` and `pdf.worker.js` in the `build/generic/build/` directory (respectively `build/generic-es5/build/`).
 Both scripts are needed but only `pdf.js` needs to be included since `pdf.worker.js` will
 be loaded by `pdf.js`. The PDF.js files are large and should be minified for production.
 
@@ -144,3 +140,7 @@ Talk to us on Matrix:
 File an issue:
 
 + https://github.com/mozilla/pdf.js/issues/new
+
+Follow us on twitter: @pdfjs
+
++ https://twitter.com/pdfjs

docs/contents/examples/index.md

@@ -44,24 +44,14 @@ Each PDF page has its own viewport which defines the size in pixels(72DPI) and i
 ```js
 var scale = 1.5;
 var viewport = page.getViewport({ scale: scale, });
-// Support HiDPI-screens.
-var outputScale = window.devicePixelRatio || 1;
 
 var canvas = document.getElementById('the-canvas');
 var context = canvas.getContext('2d');
-
+canvas.height = viewport.height;
-canvas.width = Math.floor(viewport.width * outputScale);
+canvas.width = viewport.width;
-canvas.height = Math.floor(viewport.height * outputScale);
-canvas.style.width = Math.floor(viewport.width) + "px";
-canvas.style.height =  Math.floor(viewport.height) + "px";
-
-var transform = outputScale !== 1
-  ? [outputScale, 0, 0, outputScale, 0, 0]
-  : null;
 
 var renderContext = {
   canvasContext: context,
-  transform: transform,
   viewport: viewport
 };
 page.render(renderContext);
@@ -81,19 +71,19 @@ var scaledViewport = page.getViewport({ scale: scale, });
 ### Hello World with document load error handling
 
 The example demonstrates how promises can be used to handle errors during loading.
-It also demonstrates how to wait until a page is loaded and rendered.
+It also demonstrates how to wait until page loaded and rendered.
 
-<script async src="//jsfiddle.net/pdfjs/9engc9mw/embed/html,css,result/"></script>
+<script async src="//jsfiddle.net/pdfjs/9engc9mw/embed/js,html,css,result/"></script>
 
 ### Hello World using base64 encoded PDF
 
 The PDF.js can accept any decoded base64 data as an array.
 
-<script async src="//jsfiddle.net/pdfjs/cq0asLqz/embed/html,css,result/"></script>
+<script async src="//jsfiddle.net/pdfjs/cq0asLqz/embed/js,html,css,result/"></script>
 
 ### Previous/Next example
 
 The same canvas cannot be used to perform to draw two pages at the same time --
 the example demonstrates how to wait on previous operation to be complete.
 
-<script async src="//jsfiddle.net/pdfjs/wagvs9Lf/embed/html,css,result/"></script>
+<script async src="//jsfiddle.net/pdfjs/wagvs9Lf/embed/js,html,css,result/"></script>

docs/contents/getting_started/index.md

@@ -37,22 +37,26 @@ Before downloading PDF.js please take a moment to understand the different layer
 
 ## Download
 
-Please refer to [this wiki page](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support) for information about supported browsers.
-
 <div class="row">
   <div class="col-md-4">
-    <h3>Prebuilt (modern browsers)</h3>
+    <h3>Prebuilt</h3>
     <p>
       Includes the generic build of PDF.js and the viewer.
     </p>
+    <span class="GROUP_CLASS">
       <a type="button" class="btn btn-primary" href="https://github.com/mozilla/pdf.js/releases/download/vSTABLE_VERSION/pdfjs-STABLE_VERSION-dist.zip">Stable (vSTABLE_VERSION)</a>
+      <a type="button" class="btn btn-warning HIDDEN_CLASS" href="https://github.com/mozilla/pdf.js/releases/download/vBETA_VERSION/pdfjs-BETA_VERSION-dist.zip">Beta (vBETA_VERSION)</a>
+    </span>
   </div>
   <div class="col-md-4">
-    <h3>Prebuilt (older browsers)</h3>
+    <h3>Prebuilt (for older browsers)</h3>
     <p>
       Includes the generic build of PDF.js and the viewer.
     </p>
-    <a type="button" class="btn btn-primary" href="https://github.com/mozilla/pdf.js/releases/download/vSTABLE_VERSION/pdfjs-STABLE_VERSION-legacy-dist.zip">Stable (vSTABLE_VERSION)</a>
+    <span class="GROUP_CLASS">
+      <a type="button" class="btn btn-primary" href="https://github.com/mozilla/pdf.js/releases/download/vSTABLE_VERSION/pdfjs-STABLE_VERSION-es5-dist.zip">Stable (vSTABLE_VERSION)</a>
+      <a type="button" class="btn btn-warning HIDDEN_CLASS" href="https://github.com/mozilla/pdf.js/releases/download/vBETA_VERSION/pdfjs-BETA_VERSION-es5-dist.zip">Beta (vBETA_VERSION)</a>
+    </span>
   </div>
   <div class="col-md-4">
     <h3>Source</h3>
@@ -108,8 +112,9 @@ Note that we only mention the most relevant files and folders.
 │   ├── display/                           - display layer
 │   ├── shared/                            - shared code between the core and display layers
 │   ├── interfaces.js                      - interface definitions for the core/display layers
-│   └── pdf.*.js                           - wrapper files for bundling
+│   ├── pdf.*.js                           - wrapper files for bundling
-├── test/                                  - unit, font, reference, and integration tests
+│   └── worker_loader.js                   - used for developer builds to load worker files
+├── test/                                  - unit, font and reference tests
 ├── web/                                   - viewer layer
 ├── LICENSE
 ├── README.md

examples/acroforms/README.md

@@ -0,0 +1,11 @@
+## Overview
+
+Example to demonstrate PDF.js library usage for rendering files with AcroForms.
+
+## Getting started
+
+Build and install PDF.js using `gulp dist-install` and run `gulp server` to
+start a web server. You can then work with the example at
+http://localhost:8888/examples/acroforms/acroforms.html.
+
+Refer to `acroforms.js` for the source code of the example.

examples/acroforms/acroforms.html

@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<!--
+Copyright 2017 Mozilla Foundation
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<html dir="ltr">
+  <head>
+    <meta charset="utf-8">
+
+    <title>AcroForms example</title>
+
+    <link rel="stylesheet" href="../../node_modules/pdfjs-dist/web/pdf_viewer.css">
+
+    <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
+    <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.js"></script>
+
+    <style>
+    * {
+      margin: 0;
+      padding: 0;
+    }
+    .page {
+      position: relative;
+    }
+    </style>
+  </head>
+
+  <body>
+    <div id="pageContainer"></div>
+
+    <script src="acroforms.js"></script>
+  </body>
+</html>

examples/acroforms/acroforms.js

@@ -0,0 +1,56 @@
+/* Copyright 2017 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+"use strict";
+
+pdfjsLib.GlobalWorkerOptions.workerSrc =
+  "../../node_modules/pdfjs-dist/build/pdf.worker.js";
+
+var DEFAULT_URL = "../../test/pdfs/f1040.pdf";
+var DEFAULT_SCALE = 1.0;
+
+var container = document.getElementById("pageContainer");
+
+var eventBus = new pdfjsViewer.EventBus();
+
+// Fetch the PDF document from the URL using promises.
+var loadingTask = pdfjsLib.getDocument(DEFAULT_URL);
+loadingTask.promise.then(function (doc) {
+  // Use a promise to fetch and render the next page.
+  var promise = Promise.resolve();
+
+  for (var i = 1; i <= doc.numPages; i++) {
+    promise = promise.then(
+      function (pageNum) {
+        return doc.getPage(pageNum).then(function (pdfPage) {
+          // Create the page view.
+          var pdfPageView = new pdfjsViewer.PDFPageView({
+            container,
+            id: pageNum,
+            scale: DEFAULT_SCALE,
+            defaultViewport: pdfPage.getViewport({ scale: DEFAULT_SCALE }),
+            eventBus,
+            annotationLayerFactory: new pdfjsViewer.DefaultAnnotationLayerFactory(),
+            renderInteractiveForms: true,
+          });
+
+          // Associate the actual page with the view and draw it.
+          pdfPageView.setPdfPage(pdfPage);
+          return pdfPageView.draw();
+        });
+      }.bind(null, i)
+    );
+  }
+});

examples/browserify/.gitignore

@@ -0,0 +1 @@
+node_modules/

examples/browserify/README.md

@@ -0,0 +1,26 @@
+## Overview
+
+Example to demonstrate PDF.js library usage with Browserify.
+
+## Getting started
+
+Build project and install the example dependencies:
+
+    $ gulp dist-install
+    $ cd examples/browserify
+    $ npm install
+
+To build Browserify bundles, run `gulp build`. If you are running
+a web server, you can observe the build results at
+http://localhost:8888/examples/browserify/index.html
+
+See main.js, worker.js and gulpfile.js files. Please notice that PDF.js
+packaging requires packaging of the main application and PDF.js worker code,
+and the `workerSrc` path shall be set to the latter file. The pdf.worker.js file
+shall be excluded from the main bundle.
+
+Alternatives to the gulp commands (without compression) are:
+
+    $ mkdir -p ../../build/browserify
+    $ node_modules/.bin/browserify main.js -u ./node_modules/pdfjs-dist/build/pdf.worker.js -o ../../build/browserify/main.bundle.js
+    $ node_modules/.bin/browserify worker.js -o ../../build/browserify/pdf.worker.bundle.js

examples/browserify/gulpfile.js

@@ -0,0 +1,40 @@
+var gulp = require("gulp");
+var browserify = require("browserify");
+var streamify = require("gulp-streamify");
+var rename = require("gulp-rename");
+var uglify = require("gulp-uglify");
+var source = require("vinyl-source-stream");
+
+var OUTPUT_PATH = "../../build/browserify";
+var TMP_FILE_PREFIX = "../../build/browserify_";
+
+gulp.task("build-bundle", function () {
+  return browserify("main.js", { output: TMP_FILE_PREFIX + "main.tmp" })
+    .ignore(require.resolve("pdfjs-dist/build/pdf.worker")) // Reducing size
+    .bundle()
+    .pipe(source(TMP_FILE_PREFIX + "main.tmp"))
+    .pipe(streamify(uglify()))
+    .pipe(rename("main.bundle.js"))
+    .pipe(gulp.dest(OUTPUT_PATH));
+});
+
+gulp.task("build-worker", function () {
+  // We can create our own viewer (see worker.js) or use already defined one.
+  var workerSrc = require.resolve("pdfjs-dist/build/pdf.worker.entry");
+  return browserify(workerSrc, { output: TMP_FILE_PREFIX + "worker.tmp" })
+    .bundle()
+    .pipe(source(TMP_FILE_PREFIX + "worker.tmp"))
+    .pipe(
+      streamify(
+        uglify({
+          compress: {
+            sequences: false, // Chrome has issue with the generated code if true
+          },
+        })
+      )
+    )
+    .pipe(rename("pdf.worker.bundle.js"))
+    .pipe(gulp.dest(OUTPUT_PATH));
+});
+
+gulp.task("build", gulp.series("build-bundle", "build-worker"));

examples/browserify/index.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>browserify example</title>
+  <script src="../../build/browserify/main.bundle.js"></script>
+</head>
+<body>
+  <canvas id="theCanvas"></canvas>
+</body>
+</html>

examples/browserify/main.js

@@ -0,0 +1,35 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+// Hello world example for browserify.
+
+var pdfjsLib = require("pdfjs-dist");
+
+var pdfPath = "../learning/helloworld.pdf";
+
+// Setting worker path to worker bundle.
+pdfjsLib.GlobalWorkerOptions.workerSrc =
+  "../../build/browserify/pdf.worker.bundle.js";
+
+// Loading a document.
+var loadingTask = pdfjsLib.getDocument(pdfPath);
+loadingTask.promise
+  .then(function (pdfDocument) {
+    // Request a first page
+    return pdfDocument.getPage(1).then(function (pdfPage) {
+      // Display page on the existing canvas with 100% scale.
+      var viewport = pdfPage.getViewport({ scale: 1.0 });
+      var canvas = document.getElementById("theCanvas");
+      canvas.width = viewport.width;
+      canvas.height = viewport.height;
+      var ctx = canvas.getContext("2d");
+      var renderTask = pdfPage.render({
+        canvasContext: ctx,
+        viewport,
+      });
+      return renderTask.promise;
+    });
+  })
+  .catch(function (reason) {
+    console.error("Error: " + reason);
+  });

examples/browserify/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "browserify-pdf.js-example",
+  "version": "0.1.0",
+  "devDependencies": {
+    "browserify": "^13.0.0",
+    "gulp": "^3.9.1",
+    "gulp-rename": "^1.2.2",
+    "gulp-streamify": "^1.0.2",
+    "gulp-uglify": "^1.5.3",
+    "pdfjs-dist": "../../node_modules/pdfjs-dist",
+    "vinyl-source-stream": "^1.1.0"
+  },
+  "scripts": {
+    "build": "gulp build"
+  }
+}

examples/browserify/worker.js

@@ -0,0 +1,9 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+// Hello world example for browserify: worker bundle.
+
+(typeof window !== "undefined"
+  ? window
+  : {}
+).pdfjsWorker = require("pdfjs-dist/build/pdf.worker");

examples/components/pageviewer.html

@@ -31,13 +31,13 @@ limitations under the License.
 
   <link rel="stylesheet" href="../../node_modules/pdfjs-dist/web/pdf_viewer.css">
 
-  <script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+  <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
-  <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.mjs" type="module"></script>
+  <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.js"></script>
 </head>
 
 <body tabindex="1">
   <div id="pageContainer" class="pdfViewer singlePageView"></div>
 
-  <script src="pageviewer.mjs" type="module"></script>
+  <script src="pageviewer.js"></script>
 </body>
 </html>

examples/components/pageviewer.js

@@ -0,0 +1,65 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+"use strict";
+
+if (!pdfjsLib.getDocument || !pdfjsViewer.PDFPageView) {
+  // eslint-disable-next-line no-alert
+  alert("Please build the pdfjs-dist library using\n  `gulp dist-install`");
+}
+
+// The workerSrc property shall be specified.
+//
+pdfjsLib.GlobalWorkerOptions.workerSrc =
+  "../../node_modules/pdfjs-dist/build/pdf.worker.js";
+
+// Some PDFs need external cmaps.
+//
+var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
+var CMAP_PACKED = true;
+
+var DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
+var PAGE_TO_VIEW = 1;
+var SCALE = 1.0;
+
+var container = document.getElementById("pageContainer");
+
+var eventBus = new pdfjsViewer.EventBus();
+
+// Loading document.
+var loadingTask = pdfjsLib.getDocument({
+  url: DEFAULT_URL,
+  cMapUrl: CMAP_URL,
+  cMapPacked: CMAP_PACKED,
+});
+loadingTask.promise.then(function (pdfDocument) {
+  // Document loaded, retrieving the page.
+  return pdfDocument.getPage(PAGE_TO_VIEW).then(function (pdfPage) {
+    // Creating the page view with default parameters.
+    var pdfPageView = new pdfjsViewer.PDFPageView({
+      container,
+      id: PAGE_TO_VIEW,
+      scale: SCALE,
+      defaultViewport: pdfPage.getViewport({ scale: SCALE }),
+      eventBus,
+      // We can enable text/annotations layers, if needed
+      textLayerFactory: new pdfjsViewer.DefaultTextLayerFactory(),
+      annotationLayerFactory: new pdfjsViewer.DefaultAnnotationLayerFactory(),
+    });
+    // Associates the actual page with the view, and drawing it
+    pdfPageView.setPdfPage(pdfPage);
+    return pdfPageView.draw();
+  });
+});

examples/components/pageviewer.mjs

@@ -1,63 +0,0 @@
-/* Copyright 2014 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-if (!pdfjsLib.getDocument || !pdfjsViewer.PDFPageView) {
-  // eslint-disable-next-line no-alert
-  alert("Please build the pdfjs-dist library using\n  `gulp dist-install`");
-}
-
-// The workerSrc property shall be specified.
-//
-pdfjsLib.GlobalWorkerOptions.workerSrc =
-  "../../node_modules/pdfjs-dist/build/pdf.worker.mjs";
-
-// Some PDFs need external cmaps.
-//
-const CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
-const CMAP_PACKED = true;
-
-const DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
-const PAGE_TO_VIEW = 1;
-const SCALE = 1.0;
-
-const ENABLE_XFA = true;
-
-const container = document.getElementById("pageContainer");
-
-const eventBus = new pdfjsViewer.EventBus();
-
-// Loading document.
-const loadingTask = pdfjsLib.getDocument({
-  url: DEFAULT_URL,
-  cMapUrl: CMAP_URL,
-  cMapPacked: CMAP_PACKED,
-  enableXfa: ENABLE_XFA,
-});
-
-const pdfDocument = await loadingTask.promise;
-// Document loaded, retrieving the page.
-const pdfPage = await pdfDocument.getPage(PAGE_TO_VIEW);
-
-// Creating the page view with default parameters.
-const pdfPageView = new pdfjsViewer.PDFPageView({
-  container,
-  id: PAGE_TO_VIEW,
-  scale: SCALE,
-  defaultViewport: pdfPage.getViewport({ scale: SCALE }),
-  eventBus,
-});
-// Associate the actual page with the view, and draw it.
-pdfPageView.setPdfPage(pdfPage);
-pdfPageView.draw();

examples/components/simpleviewer.html

@@ -37,8 +37,8 @@ limitations under the License.
 
   <link rel="stylesheet" href="../../node_modules/pdfjs-dist/web/pdf_viewer.css">
 
-  <script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+  <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
-  <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.mjs" type="module"></script>
+  <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.js"></script>
 </head>
 
 <body tabindex="1">
@@ -46,6 +46,6 @@ limitations under the License.
     <div id="viewer" class="pdfViewer"></div>
   </div>
 
-  <script src="simpleviewer.mjs" type="module"></script>
+  <script src="simpleviewer.js"></script>
 </body>
 </html>

examples/components/simpleviewer.js

@@ -13,6 +13,8 @@
  * limitations under the License.
  */
 
+"use strict";
+
 if (!pdfjsLib.getDocument || !pdfjsViewer.PDFViewer) {
   // eslint-disable-next-line no-alert
   alert("Please build the pdfjs-dist library using\n  `gulp dist-install`");
@@ -21,55 +23,38 @@ if (!pdfjsLib.getDocument || !pdfjsViewer.PDFViewer) {
 // The workerSrc property shall be specified.
 //
 pdfjsLib.GlobalWorkerOptions.workerSrc =
-  "../../node_modules/pdfjs-dist/build/pdf.worker.mjs";
+  "../../node_modules/pdfjs-dist/build/pdf.worker.js";
 
 // Some PDFs need external cmaps.
 //
-const CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
+var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
-const CMAP_PACKED = true;
+var CMAP_PACKED = true;
 
-const DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
+var DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
-// To test the AcroForm and/or scripting functionality, try e.g. this file:
+var SEARCH_FOR = ""; // try 'Mozilla';
-// "../../test/pdfs/160F-2019.pdf"
 
-const ENABLE_XFA = true;
+var container = document.getElementById("viewerContainer");
-const SEARCH_FOR = ""; // try "Mozilla";
 
-const SANDBOX_BUNDLE_SRC = new URL(
+var eventBus = new pdfjsViewer.EventBus();
-  "../../node_modules/pdfjs-dist/build/pdf.sandbox.mjs",
-  window.location
-);
-
-const container = document.getElementById("viewerContainer");
-
-const eventBus = new pdfjsViewer.EventBus();
 
 // (Optionally) enable hyperlinks within PDF files.
-const pdfLinkService = new pdfjsViewer.PDFLinkService({
+var pdfLinkService = new pdfjsViewer.PDFLinkService({
   eventBus,
 });
 
 // (Optionally) enable find controller.
-const pdfFindController = new pdfjsViewer.PDFFindController({
+var pdfFindController = new pdfjsViewer.PDFFindController({
   eventBus,
   linkService: pdfLinkService,
 });
 
-// (Optionally) enable scripting support.
+var pdfViewer = new pdfjsViewer.PDFViewer({
-const pdfScriptingManager = new pdfjsViewer.PDFScriptingManager({
-  eventBus,
-  sandboxBundleSrc: SANDBOX_BUNDLE_SRC,
-});
-
-const pdfViewer = new pdfjsViewer.PDFViewer({
   container,
   eventBus,
   linkService: pdfLinkService,
   findController: pdfFindController,
-  scriptingManager: pdfScriptingManager,
 });
 pdfLinkService.setViewer(pdfViewer);
-pdfScriptingManager.setViewer(pdfViewer);
 
 eventBus.on("pagesinit", function () {
   // We can use pdfViewer now, e.g. let's change default scale.
@@ -77,21 +62,20 @@ eventBus.on("pagesinit", function () {
 
   // We can try searching for things.
   if (SEARCH_FOR) {
-    eventBus.dispatch("find", { type: "", query: SEARCH_FOR });
+    pdfFindController.executeCommand("find", { query: SEARCH_FOR });
   }
 });
 
 // Loading document.
-const loadingTask = pdfjsLib.getDocument({
+var loadingTask = pdfjsLib.getDocument({
   url: DEFAULT_URL,
   cMapUrl: CMAP_URL,
   cMapPacked: CMAP_PACKED,
-  enableXfa: ENABLE_XFA,
 });
-
+loadingTask.promise.then(function (pdfDocument) {
-const pdfDocument = await loadingTask.promise;
   // Document loaded, specifying document for the viewer and
   // the (optional) linkService.
   pdfViewer.setDocument(pdfDocument);
 
   pdfLinkService.setDocument(pdfDocument, null);
+});

examples/components/singlepageviewer.html

@@ -37,8 +37,8 @@ limitations under the License.
 
   <link rel="stylesheet" href="../../node_modules/pdfjs-dist/web/pdf_viewer.css">
 
-  <script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+  <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
-  <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.mjs" type="module"></script>
+  <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.js"></script>
 </head>
 
 <body tabindex="1">
@@ -46,6 +46,6 @@ limitations under the License.
     <div id="viewer" class="pdfViewer"></div>
   </div>
 
-  <script src="singlepageviewer.mjs" type="module"></script>
+  <script src="singlepageviewer.js"></script>
 </body>
 </html>

examples/components/singlepageviewer.js

@@ -13,6 +13,8 @@
  * limitations under the License.
  */
 
+"use strict";
+
 if (!pdfjsLib.getDocument || !pdfjsViewer.PDFSinglePageViewer) {
   // eslint-disable-next-line no-alert
   alert("Please build the pdfjs-dist library using\n  `gulp dist-install`");
@@ -21,55 +23,38 @@ if (!pdfjsLib.getDocument || !pdfjsViewer.PDFSinglePageViewer) {
 // The workerSrc property shall be specified.
 //
 pdfjsLib.GlobalWorkerOptions.workerSrc =
-  "../../node_modules/pdfjs-dist/build/pdf.worker.mjs";
+  "../../node_modules/pdfjs-dist/build/pdf.worker.js";
 
 // Some PDFs need external cmaps.
 //
-const CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
+var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
-const CMAP_PACKED = true;
+var CMAP_PACKED = true;
 
-const DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
+var DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
-// To test the AcroForm and/or scripting functionality, try e.g. this file:
+var SEARCH_FOR = ""; // try 'Mozilla';
-// "../../test/pdfs/160F-2019.pdf"
 
-const ENABLE_XFA = true;
+var container = document.getElementById("viewerContainer");
-const SEARCH_FOR = ""; // try "Mozilla";
 
-const SANDBOX_BUNDLE_SRC = new URL(
+var eventBus = new pdfjsViewer.EventBus();
-  "../../node_modules/pdfjs-dist/build/pdf.sandbox.mjs",
-  window.location
-);
-
-const container = document.getElementById("viewerContainer");
-
-const eventBus = new pdfjsViewer.EventBus();
 
 // (Optionally) enable hyperlinks within PDF files.
-const pdfLinkService = new pdfjsViewer.PDFLinkService({
+var pdfLinkService = new pdfjsViewer.PDFLinkService({
   eventBus,
 });
 
 // (Optionally) enable find controller.
-const pdfFindController = new pdfjsViewer.PDFFindController({
+var pdfFindController = new pdfjsViewer.PDFFindController({
   eventBus,
   linkService: pdfLinkService,
 });
 
-// (Optionally) enable scripting support.
+var pdfSinglePageViewer = new pdfjsViewer.PDFSinglePageViewer({
-const pdfScriptingManager = new pdfjsViewer.PDFScriptingManager({
-  eventBus,
-  sandboxBundleSrc: SANDBOX_BUNDLE_SRC,
-});
-
-const pdfSinglePageViewer = new pdfjsViewer.PDFSinglePageViewer({
   container,
   eventBus,
   linkService: pdfLinkService,
   findController: pdfFindController,
-  scriptingManager: pdfScriptingManager,
 });
 pdfLinkService.setViewer(pdfSinglePageViewer);
-pdfScriptingManager.setViewer(pdfSinglePageViewer);
 
 eventBus.on("pagesinit", function () {
   // We can use pdfSinglePageViewer now, e.g. let's change default scale.
@@ -77,21 +62,20 @@ eventBus.on("pagesinit", function () {
 
   // We can try searching for things.
   if (SEARCH_FOR) {
-    eventBus.dispatch("find", { type: "", query: SEARCH_FOR });
+    pdfFindController.executeCommand("find", { query: SEARCH_FOR });
   }
 });
 
 // Loading document.
-const loadingTask = pdfjsLib.getDocument({
+var loadingTask = pdfjsLib.getDocument({
   url: DEFAULT_URL,
   cMapUrl: CMAP_URL,
   cMapPacked: CMAP_PACKED,
-  enableXfa: ENABLE_XFA,
 });
-
+loadingTask.promise.then(function (pdfDocument) {
-const pdfDocument = await loadingTask.promise;
   // Document loaded, specifying document for the viewer and
   // the (optional) linkService.
   pdfSinglePageViewer.setDocument(pdfDocument);
 
   pdfLinkService.setDocument(pdfDocument, null);
+});

examples/image_decoders/jpeg_viewer.html

@@ -29,12 +29,12 @@ limitations under the License.
     }
   </style>
 
-  <script src="../../node_modules/pdfjs-dist/image_decoders/pdf.image_decoders.mjs" type="module"></script>
+  <script src="../../node_modules/pdfjs-dist/image_decoders/pdf.image_decoders.js"></script>
 </head>
 
 <body tabindex="1">
   <canvas id="jpegCanvas" width="0" height="0"></canvas>
 
-  <script src="jpeg_viewer.mjs" type="module"></script>
+  <script src="jpeg_viewer.js"></script>
 </body>
 </html>

examples/image_decoders/jpeg_viewer.js

@@ -13,32 +13,55 @@
  * limitations under the License.
  */
 
+"use strict";
+
 if (!pdfjsImageDecoders.JpegImage) {
   // eslint-disable-next-line no-alert
   alert("Please build the pdfjs-dist library using `gulp dist-install`");
 }
 
-const JPEG_IMAGE = "fish.jpg";
+var JPEG_IMAGE = "fish.jpg";
 
-const jpegCanvas = document.getElementById("jpegCanvas");
+var jpegCanvas = document.getElementById("jpegCanvas");
-const jpegCtx = jpegCanvas.getContext("2d");
+var jpegCtx = jpegCanvas.getContext("2d");
 
 // Load the image data, and convert it to a Uint8Array.
 //
-const response = await fetch(JPEG_IMAGE);
+var nonBinaryRequest = false;
-if (!response.ok) {
+var request = new XMLHttpRequest();
-  throw new Error(response.statusText);
+request.open("GET", JPEG_IMAGE, false);
+try {
+  request.responseType = "arraybuffer";
+  nonBinaryRequest = request.responseType !== "arraybuffer";
+} catch (e) {
+  nonBinaryRequest = true;
+}
+if (nonBinaryRequest && request.overrideMimeType) {
+  request.overrideMimeType("text/plain; charset=x-user-defined");
+}
+request.send(null);
+
+var typedArrayImage;
+if (nonBinaryRequest) {
+  var str = request.responseText,
+    length = str.length;
+  var bytes = new Uint8Array(length);
+  for (var i = 0; i < length; ++i) {
+    bytes[i] = str.charCodeAt(i) & 0xff;
+  }
+  typedArrayImage = bytes;
+} else {
+  typedArrayImage = new Uint8Array(request.response);
 }
-const typedArrayImage = new Uint8Array(await response.arrayBuffer());
 
 // Parse the image data using `JpegImage`.
 //
-const jpegImage = new pdfjsImageDecoders.JpegImage();
+var jpegImage = new pdfjsImageDecoders.JpegImage();
 jpegImage.parse(typedArrayImage);
 
-const width = jpegImage.width,
+var width = jpegImage.width,
   height = jpegImage.height;
-const jpegData = jpegImage.getData({
+var jpegData = jpegImage.getData({
   width,
   height,
   forceRGB: true,
@@ -46,9 +69,9 @@ const jpegData = jpegImage.getData({
 
 // Render the JPEG image on a <canvas>.
 //
-const imageData = jpegCtx.createImageData(width, height);
+var imageData = jpegCtx.createImageData(width, height);
-const imageBytes = imageData.data;
+var imageBytes = imageData.data;
-for (let j = 0, k = 0, jj = width * height * 4; j < jj; ) {
+for (var j = 0, k = 0, jj = width * height * 4; j < jj; ) {
   imageBytes[j++] = jpegData[k++];
   imageBytes[j++] = jpegData[k++];
   imageBytes[j++] = jpegData[k++];

examples/learning/helloworld.html

@@ -10,59 +10,51 @@
 
 <canvas id="the-canvas" style="border: 1px solid black; direction: ltr;"></canvas>
 
-<script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+<script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
 
-<script id="script" type="module">
+<script id="script">
   //
   // If absolute URL from the remote server is provided, configure the CORS
   // header on that server.
   //
-  const url = './helloworld.pdf';
+  var url = './helloworld.pdf';
 
   //
   // The workerSrc property shall be specified.
   //
   pdfjsLib.GlobalWorkerOptions.workerSrc =
-    '../../node_modules/pdfjs-dist/build/pdf.worker.mjs';
+    '../../node_modules/pdfjs-dist/build/pdf.worker.js';
 
   //
   // Asynchronous download PDF
   //
-  const loadingTask = pdfjsLib.getDocument(url);
+  var loadingTask = pdfjsLib.getDocument(url);
-  const pdf = await loadingTask.promise;
+  loadingTask.promise.then(function(pdf) {
     //
     // Fetch the first page
     //
-  const page = await pdf.getPage(1);
+    pdf.getPage(1).then(function(page) {
-  const scale = 1.5;
+      var scale = 1.5;
-  const viewport = page.getViewport({ scale });
+      var viewport = page.getViewport({ scale: scale, });
-  // Support HiDPI-screens.
-  const outputScale = window.devicePixelRatio || 1;
 
       //
       // Prepare canvas using PDF page dimensions
       //
-  const canvas = document.getElementById("the-canvas");
+      var canvas = document.getElementById('the-canvas');
-  const context = canvas.getContext("2d");
+      var context = canvas.getContext('2d');
-
+      canvas.height = viewport.height;
-  canvas.width = Math.floor(viewport.width * outputScale);
+      canvas.width = viewport.width;
-  canvas.height = Math.floor(viewport.height * outputScale);
-  canvas.style.width = Math.floor(viewport.width) + "px";
-  canvas.style.height = Math.floor(viewport.height) + "px";
-
-  const transform = outputScale !== 1
-    ? [outputScale, 0, 0, outputScale, 0, 0]
-    : null;
 
       //
       // Render PDF page into canvas context
       //
-  const renderContext = {
+      var renderContext = {
         canvasContext: context,
-    transform,
+        viewport: viewport,
-    viewport,
       };
       page.render(renderContext);
+    });
+  });
 </script>
 
 <hr>

examples/learning/helloworld64.html

@@ -10,9 +10,9 @@
 
 <canvas id="the-canvas" style="border: 1px solid black; direction: ltr;"></canvas>
 
-<script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+<script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
 
-<script id="script" type="module">
+<script id="script">
   // atob() is used to convert base64 encoded PDF to binary-like data.
   // (See also https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/
   // Base64_encoding_and_decoding.)
@@ -35,39 +35,31 @@
   // The workerSrc property shall be specified.
   //
   pdfjsLib.GlobalWorkerOptions.workerSrc =
-    '../../node_modules/pdfjs-dist/build/pdf.worker.mjs';
+    '../../node_modules/pdfjs-dist/build/pdf.worker.js';
 
   // Opening PDF by passing its binary data as a string. It is still preferable
   // to use Uint8Array, but string or array-like structure will work too.
   var loadingTask = pdfjsLib.getDocument({ data: pdfData, });
-  var pdf = await loadingTask.promise;
+  loadingTask.promise.then(function(pdf) {
     // Fetch the first page.
-  var page = await pdf.getPage(1);
+    pdf.getPage(1).then(function(page) {
       var scale = 1.5;
       var viewport = page.getViewport({ scale: scale, });
-  // Support HiDPI-screens.
-  var outputScale = window.devicePixelRatio || 1;
 
       // Prepare canvas using PDF page dimensions.
       var canvas = document.getElementById('the-canvas');
       var context = canvas.getContext('2d');
-
+      canvas.height = viewport.height;
-  canvas.width = Math.floor(viewport.width * outputScale);
+      canvas.width = viewport.width;
-  canvas.height = Math.floor(viewport.height * outputScale);
-  canvas.style.width = Math.floor(viewport.width) + "px";
-  canvas.style.height =  Math.floor(viewport.height) + "px";
-
-  var transform = outputScale !== 1
-    ? [outputScale, 0, 0, outputScale, 0, 0]
-    : null;
 
       // Render PDF page into canvas context.
       var renderContext = {
         canvasContext: context,
-    transform,
+        viewport: viewport,
-    viewport,
       };
       page.render(renderContext);
+    });
+  });
 </script>
 
 <hr>

examples/learning/prevnext.html

@@ -19,9 +19,9 @@
   <canvas id="the-canvas" style="border: 1px solid black; direction: ltr;"></canvas>
 </div>
 
-<script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+<script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
 
-<script id="script" type="module">
+<script id="script">
   //
   // If absolute URL from the remote server is provided, configure the CORS
   // header on that server.
@@ -34,7 +34,7 @@
   // shall be specified.
   //
   pdfjsLib.GlobalWorkerOptions.workerSrc =
-    '../../node_modules/pdfjs-dist/build/pdf.worker.mjs';
+    '../../node_modules/pdfjs-dist/build/pdf.worker.js';
 
   var pdfDoc = null,
       pageNum = 1,
@@ -53,22 +53,12 @@
     // Using promise to fetch the page
     pdfDoc.getPage(num).then(function(page) {
       var viewport = page.getViewport({ scale: scale, });
-      // Support HiDPI-screens.
+      canvas.height = viewport.height;
-      var outputScale = window.devicePixelRatio || 1;
+      canvas.width = viewport.width;
-
-      canvas.width = Math.floor(viewport.width * outputScale);
-      canvas.height = Math.floor(viewport.height * outputScale);
-      canvas.style.width = Math.floor(viewport.width) + "px";
-      canvas.style.height =  Math.floor(viewport.height) + "px";
-
-      var transform = outputScale !== 1
-        ? [outputScale, 0, 0, outputScale, 0, 0]
-        : null;
 
       // Render PDF page into canvas context
       var renderContext = {
         canvasContext: ctx,
-        transform: transform,
         viewport: viewport,
       };
       var renderTask = page.render(renderContext);
@@ -90,7 +80,7 @@
 
   /**
    * If another page rendering in progress, waits until the rendering is
-   * finished. Otherwise, executes rendering immediately.
+   * finised. Otherwise, executes rendering immediately.
    */
   function queueRenderPage(num) {
     if (pageRendering) {
@@ -128,11 +118,13 @@
    * Asynchronously downloads PDF.
    */
   var loadingTask = pdfjsLib.getDocument(url);
-  pdfDoc = await loadingTask.promise;
+  loadingTask.promise.then(function(pdfDoc_) {
+    pdfDoc = pdfDoc_;
     document.getElementById('page_count').textContent = pdfDoc.numPages;
 
     // Initial/first page rendering
     renderPage(pageNum);
+  });
 </script>
 
 </body>

examples/mobile-viewer/viewer.css

@@ -26,12 +26,12 @@ html {
 }
 
 header {
-  background-color: rgb(244 244 244 / 1);
+  background-color: rgba(244, 244, 244, 1);
 }
 
 header h1 {
-  border-bottom: 1px solid rgb(216 216 216 / 1);
+  border-bottom: 1px solid rgba(216, 216, 216, 1);
-  color: rgb(133 133 133 / 1);
+  color: rgba(133, 133, 133, 1);
   font-size: 23px;
   font-style: italic;
   font-weight: normal;
@@ -44,7 +44,7 @@ header h1 {
 
 body {
   background: url(images/document_bg.png);
-  color: rgb(255 255 255 / 1);
+  color: rgba(255, 255, 255, 1);
   font-family: sans-serif;
   font-size: 10px;
   height: 100%;
@@ -71,7 +71,7 @@ footer {
   left: 0;
   right: 0;
   z-index: 1;
-  box-shadow: 0 -0.2rem 0.5rem rgb(50 50 50 / 0.75);
+  box-shadow: 0 -0.2rem 0.5rem rgba(50, 50, 50, 0.75);
 }
 
 .toolbarButton {
@@ -81,7 +81,7 @@ footer {
   border-width: 0;
   background-position: center center;
   background-repeat: no-repeat;
-  background-color: rgb(0 0 0 / 0);
+  background-color: rgba(0, 0, 0, 0);
 }
 
 .toolbarButton.pageUp {
@@ -110,9 +110,9 @@ footer {
   left: 36%;
   text-align: center;
   border: 0;
-  background-color: rgb(0 0 0 / 0);
+  background-color: rgba(0, 0, 0, 0);
   font-size: 1.2rem;
-  color: rgb(255 255 255 / 1);
+  color: rgba(255, 255, 255, 1);
   background-image: url(images/div_line_left.png),
     url(images/div_line_right.png);
   background-repeat: no-repeat;
@@ -153,7 +153,10 @@ footer {
   position: absolute;
   overflow: auto;
   width: 100%;
-  inset: 5rem 0 4rem;
+  top: 5rem;
+  bottom: 4rem;
+  left: 0;
+  right: 0;
 }
 
 canvas {
@@ -184,47 +187,41 @@ canvas {
 }
 
 #loadingBar {
-  /* Define this variable here, and not in :root, to avoid reflowing the
-     entire viewer when updating progress (see issue 15958). */
-  --progressBar-percent: 0%;
-
   position: relative;
   height: 0.6rem;
-  background-color: rgb(51 51 51 / 1);
+  background-color: rgba(51, 51, 51, 1);
-  border-bottom: 1px solid rgb(51 51 51 / 1);
+  border-bottom: 1px solid rgba(51, 51, 51, 1);
+  margin-top: 5rem;
 }
 
 #loadingBar .progress {
   position: absolute;
   left: 0;
-  width: 100%;
+  width: 0;
-  transform: scaleX(var(--progressBar-percent));
-  transform-origin: 0 0;
   height: 100%;
-  background-color: rgb(221 221 221 / 1);
+  background-color: rgba(221, 221, 221, 1);
   overflow: hidden;
-  transition: transform 200ms;
+  transition: width 200ms;
 }
 
 @keyframes progressIndeterminate {
   0% {
-    transform: translateX(0%);
+    left: 0;
   }
   50% {
-    transform: translateX(100%);
+    left: 100%;
   }
   100% {
-    transform: translateX(100%);
+    left: 100%;
   }
 }
 
-#loadingBar.indeterminate .progress {
+#loadingBar .progress.indeterminate {
-  transform: none;
+  background-color: rgba(153, 153, 153, 1);
-  background-color: rgb(153 153 153 / 1);
   transition: none;
 }
 
-#loadingBar.indeterminate .progress .glimmer {
+#loadingBar .indeterminate .glimmer {
   position: absolute;
   top: 0;
   left: 0;
@@ -232,11 +229,39 @@ canvas {
   width: 5rem;
   background-image: linear-gradient(
     to right,
-    rgb(153 153 153 / 1) 0%,
+    rgba(153, 153, 153, 1) 0%,
-    rgb(255 255 255 / 1) 50%,
+    rgba(255, 255, 255, 1) 50%,
-    rgb(153 153 153 / 1) 100%
+    rgba(153, 153, 153, 1) 100%
   );
   background-size: 100% 100%;
   background-repeat: no-repeat;
   animation: progressIndeterminate 2s linear infinite;
 }
+
+#errorWrapper {
+  background: none repeat scroll 0 0 rgba(255, 85, 85, 1);
+  color: rgba(255, 255, 255, 1);
+  left: 0;
+  position: absolute;
+  right: 0;
+  top: 3.2rem;
+  z-index: 1000;
+  padding: 0.3rem;
+  font-size: 0.8em;
+}
+
+#errorMessageLeft {
+  float: left;
+}
+
+#errorMessageRight {
+  float: right;
+}
+
+#errorMoreInfo {
+  background-color: rgba(255, 255, 255, 1);
+  color: rgba(0, 0, 0, 1);
+  padding: 0.3rem;
+  margin: 0.3rem;
+  width: 98%;
+}

examples/mobile-viewer/viewer.html

@@ -24,8 +24,8 @@ limitations under the License.
     <link rel="stylesheet" href="../../node_modules/pdfjs-dist/web/pdf_viewer.css">
     <link rel="stylesheet" type="text/css" href="viewer.css">
 
-    <script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+    <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
-    <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.mjs" type="module"></script>
+    <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.js"></script>
   </head>
 
   <body>
@@ -42,6 +42,25 @@ limitations under the License.
       <div class="glimmer"></div>
     </div>
 
+    <div id="errorWrapper" hidden="true">
+      <div id="errorMessageLeft">
+        <span id="errorMessage"></span>
+        <button id="errorShowMore">
+          More Information
+        </button>
+        <button id="errorShowLess">
+          Less Information
+        </button>
+      </div>
+      <div id="errorMessageRight">
+        <button id="errorClose">
+          Close
+        </button>
+      </div>
+      <div class="clearBoth"></div>
+      <textarea id="errorMoreInfo" hidden="true" readonly="readonly"></textarea>
+    </div>
+
     <footer>
       <button class="toolbarButton pageUp" title="Previous Page" id="previous"></button>
       <button class="toolbarButton pageDown" title="Next Page" id="next"></button>
@@ -52,6 +71,6 @@ limitations under the License.
       <button class="toolbarButton zoomIn" title="Zoom In" id="zoomIn"></button>
     </footer>
 
-     <script src="viewer.mjs" type="module"></script>
+     <script src="viewer.js"></script>
   </body>
 </html>

examples/mobile-viewer/viewer.js

@@ -13,27 +13,29 @@
  * limitations under the License.
  */
 
+"use strict";
+
 if (!pdfjsLib.getDocument || !pdfjsViewer.PDFViewer) {
   // eslint-disable-next-line no-alert
   alert("Please build the pdfjs-dist library using\n `gulp dist-install`");
 }
 
-const MAX_CANVAS_PIXELS = 0; // CSS-only zooming.
+var USE_ONLY_CSS_ZOOM = true;
-const TEXT_LAYER_MODE = 0; // DISABLE
+var TEXT_LAYER_MODE = 0; // DISABLE
-const MAX_IMAGE_SIZE = 1024 * 1024;
+var MAX_IMAGE_SIZE = 1024 * 1024;
-const CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
+var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
-const CMAP_PACKED = true;
+var CMAP_PACKED = true;
 
 pdfjsLib.GlobalWorkerOptions.workerSrc =
-  "../../node_modules/pdfjs-dist/build/pdf.worker.mjs";
+  "../../node_modules/pdfjs-dist/build/pdf.worker.js";
 
-const DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
+var DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
-const DEFAULT_SCALE_DELTA = 1.1;
+var DEFAULT_SCALE_DELTA = 1.1;
-const MIN_SCALE = 0.25;
+var MIN_SCALE = 0.25;
-const MAX_SCALE = 10.0;
+var MAX_SCALE = 10.0;
-const DEFAULT_SCALE_VALUE = "auto";
+var DEFAULT_SCALE_VALUE = "auto";
 
-const PDFViewerApplication = {
+var PDFViewerApplication = {
   pdfLoadingTask: null,
   pdfDocument: null,
   pdfViewer: null,
@@ -57,12 +59,12 @@ const PDFViewerApplication = {
       );
     }
 
-    const url = params.url;
+    var url = params.url;
-    const self = this;
+    var self = this;
     this.setTitleUsingUrl(url);
 
     // Loading document.
-    const loadingTask = pdfjsLib.getDocument({
+    var loadingTask = pdfjsLib.getDocument({
       url,
       maxImageSize: MAX_IMAGE_SIZE,
       cMapUrl: CMAP_URL,
@@ -80,24 +82,46 @@ const PDFViewerApplication = {
         self.pdfDocument = pdfDocument;
         self.pdfViewer.setDocument(pdfDocument);
         self.pdfLinkService.setDocument(pdfDocument);
-        self.pdfHistory.initialize({
+        self.pdfHistory.initialize({ fingerprint: pdfDocument.fingerprint });
-          fingerprint: pdfDocument.fingerprints[0],
-        });
 
         self.loadingBar.hide();
         self.setTitleUsingMetadata(pdfDocument);
       },
-      function (reason) {
+      function (exception) {
-        let key = "pdfjs-loading-error";
+        var message = exception && exception.message;
-        if (reason instanceof pdfjsLib.InvalidPDFException) {
+        var l10n = self.l10n;
-          key = "pdfjs-invalid-file-error";
+        var loadingErrorMessage;
-        } else if (reason instanceof pdfjsLib.MissingPDFException) {
+
-          key = "pdfjs-missing-file-error";
+        if (exception instanceof pdfjsLib.InvalidPDFException) {
-        } else if (reason instanceof pdfjsLib.UnexpectedResponseException) {
+          // change error message also for other builds
-          key = "pdfjs-unexpected-response-error";
+          loadingErrorMessage = l10n.get(
+            "invalid_file_error",
+            null,
+            "Invalid or corrupted PDF file."
+          );
+        } else if (exception instanceof pdfjsLib.MissingPDFException) {
+          // special message for missing PDFs
+          loadingErrorMessage = l10n.get(
+            "missing_file_error",
+            null,
+            "Missing PDF file."
+          );
+        } else if (exception instanceof pdfjsLib.UnexpectedResponseException) {
+          loadingErrorMessage = l10n.get(
+            "unexpected_response_error",
+            null,
+            "Unexpected server response."
+          );
+        } else {
+          loadingErrorMessage = l10n.get(
+            "loading_error",
+            null,
+            "An error occurred while loading the PDF."
+          );
         }
-        self.l10n.get(key).then(msg => {
+
-          self.error(msg, { message: reason?.message });
+        loadingErrorMessage.then(function (msg) {
+          self.error(msg, { message });
         });
         self.loadingBar.hide();
       }
@@ -110,11 +134,14 @@ const PDFViewerApplication = {
    *                      destruction is completed.
    */
   close() {
+    var errorWrapper = document.getElementById("errorWrapper");
+    errorWrapper.setAttribute("hidden", "true");
+
     if (!this.pdfLoadingTask) {
       return Promise.resolve();
     }
 
-    const promise = this.pdfLoadingTask.destroy();
+    var promise = this.pdfLoadingTask.destroy();
     this.pdfLoadingTask = null;
 
     if (this.pdfDocument) {
@@ -132,20 +159,17 @@ const PDFViewerApplication = {
   },
 
   get loadingBar() {
-    const bar = document.getElementById("loadingBar");
+    var bar = new pdfjsViewer.ProgressBar("#loadingBar", {});
-    return pdfjsLib.shadow(
+
-      this,
+    return pdfjsLib.shadow(this, "loadingBar", bar);
-      "loadingBar",
-      new pdfjsViewer.ProgressBar(bar)
-    );
   },
 
   setTitleUsingUrl: function pdfViewSetTitleUsingUrl(url) {
     this.url = url;
-    let title = pdfjsLib.getFilenameFromUrl(url) || url;
+    var title = pdfjsLib.getFilenameFromUrl(url) || url;
     try {
       title = decodeURIComponent(title);
-    } catch {
+    } catch (e) {
       // decodeURIComponent may throw URIError,
       // fall back to using the unprocessed url in that case
     }
@@ -153,9 +177,9 @@ const PDFViewerApplication = {
   },
 
   setTitleUsingMetadata(pdfDocument) {
-    const self = this;
+    var self = this;
     pdfDocument.getMetadata().then(function (data) {
-      const info = data.info,
+      var info = data.info,
         metadata = data.metadata;
       self.documentInfo = info;
       self.metadata = metadata;
@@ -163,7 +187,7 @@ const PDFViewerApplication = {
       // Provides some basic debug information
       console.log(
         "PDF " +
-          pdfDocument.fingerprints[0] +
+          pdfDocument.fingerprint +
           " [" +
           info.PDFFormatVersion +
           " " +
@@ -176,9 +200,9 @@ const PDFViewerApplication = {
           ")"
       );
 
-      let pdfTitle;
+      var pdfTitle;
       if (metadata && metadata.has("dc:title")) {
-        const title = metadata.get("dc:title");
+        var title = metadata.get("dc:title");
         // Ghostscript sometimes returns 'Untitled', so prevent setting the
         // title to 'Untitled.
         if (title !== "Untitled") {
@@ -202,29 +226,83 @@ const PDFViewerApplication = {
   },
 
   error: function pdfViewError(message, moreInfo) {
-    const moreInfoText = [
+    var l10n = this.l10n;
-      `PDF.js v${pdfjsLib.version || "?"} (build: ${pdfjsLib.build || "?"})`,
+    var moreInfoText = [
+      l10n.get(
+        "error_version_info",
+        { version: pdfjsLib.version || "?", build: pdfjsLib.build || "?" },
+        "PDF.js v{{version}} (build: {{build}})"
+      ),
     ];
-    if (moreInfo) {
-      moreInfoText.push(`Message: ${moreInfo.message}`);
 
+    if (moreInfo) {
+      moreInfoText.push(
+        l10n.get(
+          "error_message",
+          { message: moreInfo.message },
+          "Message: {{message}}"
+        )
+      );
       if (moreInfo.stack) {
-        moreInfoText.push(`Stack: ${moreInfo.stack}`);
+        moreInfoText.push(
+          l10n.get("error_stack", { stack: moreInfo.stack }, "Stack: {{stack}}")
+        );
       } else {
         if (moreInfo.filename) {
-          moreInfoText.push(`File: ${moreInfo.filename}`);
+          moreInfoText.push(
+            l10n.get(
+              "error_file",
+              { file: moreInfo.filename },
+              "File: {{file}}"
+            )
+          );
         }
         if (moreInfo.lineNumber) {
-          moreInfoText.push(`Line: ${moreInfo.lineNumber}`);
+          moreInfoText.push(
+            l10n.get(
+              "error_line",
+              { line: moreInfo.lineNumber },
+              "Line: {{line}}"
+            )
+          );
         }
       }
     }
 
-    console.error(`${message}\n\n${moreInfoText.join("\n")}`);
+    var errorWrapper = document.getElementById("errorWrapper");
+    errorWrapper.removeAttribute("hidden");
+
+    var errorMessage = document.getElementById("errorMessage");
+    errorMessage.textContent = message;
+
+    var closeButton = document.getElementById("errorClose");
+    closeButton.onclick = function () {
+      errorWrapper.setAttribute("hidden", "true");
+    };
+
+    var errorMoreInfo = document.getElementById("errorMoreInfo");
+    var moreInfoButton = document.getElementById("errorShowMore");
+    var lessInfoButton = document.getElementById("errorShowLess");
+    moreInfoButton.onclick = function () {
+      errorMoreInfo.removeAttribute("hidden");
+      moreInfoButton.setAttribute("hidden", "true");
+      lessInfoButton.removeAttribute("hidden");
+      errorMoreInfo.style.height = errorMoreInfo.scrollHeight + "px";
+    };
+    lessInfoButton.onclick = function () {
+      errorMoreInfo.setAttribute("hidden", "true");
+      moreInfoButton.removeAttribute("hidden");
+      lessInfoButton.setAttribute("hidden", "true");
+    };
+    moreInfoButton.removeAttribute("hidden");
+    lessInfoButton.setAttribute("hidden", "true");
+    Promise.all(moreInfoText).then(function (parts) {
+      errorMoreInfo.value = parts.join("\n");
+    });
   },
 
   progress: function pdfViewProgress(level) {
-    const percent = Math.round(level * 100);
+    var percent = Math.round(level * 100);
     // Updating the bar if value increases.
     if (percent > this.loadingBar.percent || isNaN(percent)) {
       this.loadingBar.percent = percent;
@@ -244,7 +322,7 @@ const PDFViewerApplication = {
   },
 
   zoomIn: function pdfViewZoomIn(ticks) {
-    let newScale = this.pdfViewer.currentScale;
+    var newScale = this.pdfViewer.currentScale;
     do {
       newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
       newScale = Math.ceil(newScale * 10) / 10;
@@ -254,7 +332,7 @@ const PDFViewerApplication = {
   },
 
   zoomOut: function pdfViewZoomOut(ticks) {
-    let newScale = this.pdfViewer.currentScale;
+    var newScale = this.pdfViewer.currentScale;
     do {
       newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
       newScale = Math.floor(newScale * 10) / 10;
@@ -264,23 +342,23 @@ const PDFViewerApplication = {
   },
 
   initUI: function pdfViewInitUI() {
-    const eventBus = new pdfjsViewer.EventBus();
+    var eventBus = new pdfjsViewer.EventBus();
     this.eventBus = eventBus;
 
-    const linkService = new pdfjsViewer.PDFLinkService({
+    var linkService = new pdfjsViewer.PDFLinkService({
       eventBus,
     });
     this.pdfLinkService = linkService;
 
-    this.l10n = new pdfjsViewer.GenericL10n();
+    this.l10n = pdfjsViewer.NullL10n;
 
-    const container = document.getElementById("viewerContainer");
+    var container = document.getElementById("viewerContainer");
-    const pdfViewer = new pdfjsViewer.PDFViewer({
+    var pdfViewer = new pdfjsViewer.PDFViewer({
       container,
       eventBus,
       linkService,
       l10n: this.l10n,
-      maxCanvasPixels: MAX_CANVAS_PIXELS,
+      useOnlyCssZoom: USE_ONLY_CSS_ZOOM,
       textLayerMode: TEXT_LAYER_MODE,
     });
     this.pdfViewer = pdfViewer;
@@ -335,8 +413,8 @@ const PDFViewerApplication = {
     eventBus.on(
       "pagechanging",
       function (evt) {
-        const page = evt.pageNumber;
+        var page = evt.pageNumber;
-        const numPages = PDFViewerApplication.pagesCount;
+        var numPages = PDFViewerApplication.pagesCount;
 
         document.getElementById("pageNumber").value = page;
         document.getElementById("previous").disabled = page <= 1;
@@ -347,8 +425,6 @@ const PDFViewerApplication = {
   },
 };
 
-window.PDFViewerApplication = PDFViewerApplication;
-
 document.addEventListener(
   "DOMContentLoaded",
   function () {
@@ -357,14 +433,18 @@ document.addEventListener(
   true
 );
 
-// The offsetParent is not set until the PDF.js iframe or object is visible;
+(function animationStartedClosure() {
-// waiting for first animation.
+  // The offsetParent is not set until the PDF.js iframe or object is visible.
-const animationStarted = new Promise(function (resolve) {
+  // Waiting for first animation.
+  PDFViewerApplication.animationStartedPromise = new Promise(function (
+    resolve
+  ) {
     window.requestAnimationFrame(resolve);
   });
+})();
 
 // We need to delay opening until all HTML is loaded.
-animationStarted.then(function () {
+PDFViewerApplication.animationStartedPromise.then(function () {
   PDFViewerApplication.open({
     url: DEFAULT_URL,
   });

examples/node/domstubs.js

@@ -0,0 +1,278 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function xmlEncode(s) {
+  var i = 0,
+    ch;
+  s = String(s);
+  while (
+    i < s.length &&
+    (ch = s[i]) !== "&" &&
+    ch !== "<" &&
+    ch !== '"' &&
+    ch !== "\n" &&
+    ch !== "\r" &&
+    ch !== "\t"
+  ) {
+    i++;
+  }
+  if (i >= s.length) {
+    return s;
+  }
+  var buf = s.substring(0, i);
+  while (i < s.length) {
+    ch = s[i++];
+    switch (ch) {
+      case "&":
+        buf += "&amp;";
+        break;
+      case "<":
+        buf += "&lt;";
+        break;
+      case '"':
+        buf += "&quot;";
+        break;
+      case "\n":
+        buf += "&#xA;";
+        break;
+      case "\r":
+        buf += "&#xD;";
+        break;
+      case "\t":
+        buf += "&#x9;";
+        break;
+      default:
+        buf += ch;
+        break;
+    }
+  }
+  return buf;
+}
+
+function DOMElement(name) {
+  this.nodeName = name;
+  this.childNodes = [];
+  this.attributes = {};
+  this.textContent = "";
+
+  if (name === "style") {
+    this.sheet = {
+      cssRules: [],
+      insertRule(rule) {
+        this.cssRules.push(rule);
+      },
+    };
+  }
+}
+
+DOMElement.prototype = {
+  getAttribute: function DOMElement_getAttribute(name) {
+    if (name in this.attributes) {
+      return this.attributes[name];
+    }
+    return null;
+  },
+
+  getAttributeNS: function DOMElement_getAttributeNS(NS, name) {
+    // Fast path
+    if (name in this.attributes) {
+      return this.attributes[name];
+    }
+    // Slow path - used by test/unit/display_svg_spec.js
+    // Assuming that there is only one matching attribute for a given name,
+    // across all namespaces.
+    if (NS) {
+      var suffix = ":" + name;
+      for (var fullName in this.attributes) {
+        if (fullName.slice(-suffix.length) === suffix) {
+          return this.attributes[fullName];
+        }
+      }
+    }
+    return null;
+  },
+
+  setAttribute: function DOMElement_setAttribute(name, value) {
+    value = value || "";
+    value = xmlEncode(value);
+    this.attributes[name] = value;
+  },
+
+  setAttributeNS: function DOMElement_setAttributeNS(NS, name, value) {
+    this.setAttribute(name, value);
+  },
+
+  appendChild: function DOMElement_appendChild(element) {
+    var childNodes = this.childNodes;
+    if (!childNodes.includes(element)) {
+      childNodes.push(element);
+    }
+  },
+
+  hasChildNodes: function DOMElement_hasChildNodes() {
+    return this.childNodes.length !== 0;
+  },
+
+  cloneNode: function DOMElement_cloneNode() {
+    var newNode = new DOMElement(this.nodeName);
+    newNode.childNodes = this.childNodes;
+    newNode.attributes = this.attributes;
+    newNode.textContent = this.textContent;
+    return newNode;
+  },
+
+  // This method is offered for convenience. It is recommended to directly use
+  // getSerializer because that allows you to process the chunks as they come
+  // instead of requiring the whole image to fit in memory.
+  toString: function DOMElement_toString() {
+    var buf = [];
+    var serializer = this.getSerializer();
+    var chunk;
+    while ((chunk = serializer.getNext()) !== null) {
+      buf.push(chunk);
+    }
+    return buf.join("");
+  },
+
+  getSerializer: function DOMElement_getSerializer() {
+    return new DOMElementSerializer(this);
+  },
+};
+
+function DOMElementSerializer(node) {
+  this._node = node;
+  this._state = 0;
+  this._loopIndex = 0;
+  this._attributeKeys = null;
+  this._childSerializer = null;
+}
+DOMElementSerializer.prototype = {
+  /**
+   * Yields the next chunk in the serialization of the element.
+   *
+   * @returns {string|null} null if the element has fully been serialized.
+   */
+  getNext: function DOMElementSerializer_getNext() {
+    var node = this._node;
+    switch (this._state) {
+      case 0: // Start opening tag.
+        ++this._state;
+        return "<" + node.nodeName;
+      case 1: // Add SVG namespace if this is the root element.
+        ++this._state;
+        if (node.nodeName === "svg:svg") {
+          return (
+            ' xmlns:xlink="http://www.w3.org/1999/xlink"' +
+            ' xmlns:svg="http://www.w3.org/2000/svg"'
+          );
+        }
+      /* falls through */
+      case 2: // Initialize variables for looping over attributes.
+        ++this._state;
+        this._loopIndex = 0;
+        this._attributeKeys = Object.keys(node.attributes);
+      /* falls through */
+      case 3: // Serialize any attributes and end opening tag.
+        if (this._loopIndex < this._attributeKeys.length) {
+          var name = this._attributeKeys[this._loopIndex++];
+          return " " + name + '="' + xmlEncode(node.attributes[name]) + '"';
+        }
+        ++this._state;
+        return ">";
+      case 4: // Serialize textContent for tspan/style elements.
+        if (node.nodeName === "svg:tspan" || node.nodeName === "svg:style") {
+          this._state = 6;
+          return xmlEncode(node.textContent);
+        }
+        ++this._state;
+        this._loopIndex = 0;
+      /* falls through */
+      case 5: // Serialize child nodes (only for non-tspan/style elements).
+        var value;
+        while (true) {
+          value = this._childSerializer && this._childSerializer.getNext();
+          if (value !== null) {
+            return value;
+          }
+          var nextChild = node.childNodes[this._loopIndex++];
+          if (nextChild) {
+            this._childSerializer = new DOMElementSerializer(nextChild);
+          } else {
+            this._childSerializer = null;
+            ++this._state;
+            break;
+          }
+        }
+      /* falls through */
+      case 6: // Ending tag.
+        ++this._state;
+        return "</" + node.nodeName + ">";
+      case 7: // Done.
+        return null;
+      default:
+        throw new Error("Unexpected serialization state: " + this._state);
+    }
+  },
+};
+
+const document = {
+  childNodes: [],
+
+  get currentScript() {
+    return { src: "" };
+  },
+
+  get documentElement() {
+    return this;
+  },
+
+  createElementNS(NS, element) {
+    var elObject = new DOMElement(element);
+    return elObject;
+  },
+
+  createElement(element) {
+    return this.createElementNS("", element);
+  },
+
+  getElementsByTagName(element) {
+    if (element === "head") {
+      return [this.head || (this.head = new DOMElement("head"))];
+    }
+    return [];
+  },
+};
+
+function Image() {
+  this._src = null;
+  this.onload = null;
+}
+Image.prototype = {
+  get src() {
+    return this._src;
+  },
+  set src(value) {
+    this._src = value;
+    if (this.onload) {
+      this.onload();
+    }
+  },
+};
+
+exports.document = document;
+exports.Image = Image;
+
+var exported_symbols = Object.keys(exports);
+
+exports.setStubs = function (namespace) {
+  exported_symbols.forEach(function (key) {
+    console.assert(!(key in namespace), "property should not be set: " + key);
+    namespace[key] = exports[key];
+  });
+};
+exports.unsetStubs = function (namespace) {
+  exported_symbols.forEach(function (key) {
+    console.assert(key in namespace, "property should be set: " + key);
+    delete namespace[key];
+  });
+};

examples/node/getinfo.js

@@ -3,26 +3,27 @@
 
 //
 // Basic node example that prints document metadata and text content.
+// Requires single file built version of PDF.js -- please run
+// `gulp singlefile` before running the example.
 //
 
 // Run `gulp dist-install` to generate 'pdfjs-dist' npm package files.
-import { getDocument } from "pdfjs-dist/legacy/build/pdf.mjs";
+var pdfjsLib = require("pdfjs-dist/es5/build/pdf.js");
 
 // Loading file from file system into typed array
-const pdfPath =
+var pdfPath = process.argv[2] || "../../web/compressed.tracemonkey-pldi-09.pdf";
-  process.argv[2] || "../../web/compressed.tracemonkey-pldi-09.pdf";
 
 // Will be using promises to load document, pages and misc data instead of
 // callback.
-const loadingTask = getDocument(pdfPath);
+var loadingTask = pdfjsLib.getDocument(pdfPath);
 loadingTask.promise
   .then(function (doc) {
-    const numPages = doc.numPages;
+    var numPages = doc.numPages;
     console.log("# Document Loaded");
     console.log("Number of Pages: " + numPages);
     console.log();
 
-    let lastPromise; // will be used to chain promises
+    var lastPromise; // will be used to chain promises
     lastPromise = doc.getMetadata().then(function (data) {
       console.log("# Metadata Is Loaded");
       console.log("## Info");
@@ -35,10 +36,10 @@ loadingTask.promise
       }
     });
 
-    const loadPage = function (pageNum) {
+    var loadPage = function (pageNum) {
       return doc.getPage(pageNum).then(function (page) {
         console.log("# Page " + pageNum);
-        const viewport = page.getViewport({ scale: 1.0 });
+        var viewport = page.getViewport({ scale: 1.0 });
         console.log("Size: " + viewport.width + "x" + viewport.height);
         console.log();
         return page
@@ -46,13 +47,11 @@ loadingTask.promise
           .then(function (content) {
             // Content contains lots of information about the text layout and
             // styles, but we need only strings at the moment
-            const strings = content.items.map(function (item) {
+            var strings = content.items.map(function (item) {
               return item.str;
             });
             console.log("## Text Content");
             console.log(strings.join(" "));
-            // Release page resources.
-            page.cleanup();
           })
           .then(function () {
             console.log();
@@ -61,7 +60,7 @@ loadingTask.promise
     };
     // Loading of the first page will wait on metadata and subsequent loadings
     // will wait on the previous pages.
-    for (let i = 1; i <= numPages; i++) {
+    for (var i = 1; i <= numPages; i++) {
       lastPromise = lastPromise.then(loadPage.bind(null, i));
     }
     return lastPromise;

examples/node/pdf2png/pdf2png.js

@@ -0,0 +1,105 @@
+/* Copyright 2017 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var Canvas = require("canvas");
+var assert = require("assert").strict;
+var fs = require("fs");
+
+function NodeCanvasFactory() {}
+NodeCanvasFactory.prototype = {
+  create: function NodeCanvasFactory_create(width, height) {
+    assert(width > 0 && height > 0, "Invalid canvas size");
+    var canvas = Canvas.createCanvas(width, height);
+    var context = canvas.getContext("2d");
+    return {
+      canvas,
+      context,
+    };
+  },
+
+  reset: function NodeCanvasFactory_reset(canvasAndContext, width, height) {
+    assert(canvasAndContext.canvas, "Canvas is not specified");
+    assert(width > 0 && height > 0, "Invalid canvas size");
+    canvasAndContext.canvas.width = width;
+    canvasAndContext.canvas.height = height;
+  },
+
+  destroy: function NodeCanvasFactory_destroy(canvasAndContext) {
+    assert(canvasAndContext.canvas, "Canvas is not specified");
+
+    // Zeroing the width and height cause Firefox to release graphics
+    // resources immediately, which can greatly reduce memory consumption.
+    canvasAndContext.canvas.width = 0;
+    canvasAndContext.canvas.height = 0;
+    canvasAndContext.canvas = null;
+    canvasAndContext.context = null;
+  },
+};
+
+var pdfjsLib = require("pdfjs-dist/es5/build/pdf.js");
+
+// Some PDFs need external cmaps.
+var CMAP_URL = "../../../node_modules/pdfjs-dist/cmaps/";
+var CMAP_PACKED = true;
+
+// Loading file from file system into typed array.
+var pdfPath =
+  process.argv[2] || "../../../web/compressed.tracemonkey-pldi-09.pdf";
+var data = new Uint8Array(fs.readFileSync(pdfPath));
+
+// Load the PDF file.
+var loadingTask = pdfjsLib.getDocument({
+  data,
+  cMapUrl: CMAP_URL,
+  cMapPacked: CMAP_PACKED,
+});
+loadingTask.promise
+  .then(function (pdfDocument) {
+    console.log("# PDF document loaded.");
+
+    // Get the first page.
+    pdfDocument.getPage(1).then(function (page) {
+      // Render the page on a Node canvas with 100% scale.
+      var viewport = page.getViewport({ scale: 1.0 });
+      var canvasFactory = new NodeCanvasFactory();
+      var canvasAndContext = canvasFactory.create(
+        viewport.width,
+        viewport.height
+      );
+      var renderContext = {
+        canvasContext: canvasAndContext.context,
+        viewport,
+        canvasFactory,
+      };
+
+      var renderTask = page.render(renderContext);
+      renderTask.promise.then(function () {
+        // Convert the canvas to an image buffer.
+        var image = canvasAndContext.canvas.toBuffer();
+        fs.writeFile("output.png", image, function (error) {
+          if (error) {
+            console.error("Error: " + error);
+          } else {
+            console.log(
+              "Finished converting first page of PDF file to a PNG image."
+            );
+          }
+        });
+      });
+    });
+  })
+  .catch(function (reason) {
+    console.log(reason);
+  });

examples/node/pdf2png/pdf2png.mjs

@@ -1,106 +0,0 @@
-/* Copyright 2017 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import { strict as assert } from "assert";
-import Canvas from "canvas";
-import fs from "fs";
-import { getDocument } from "pdfjs-dist/legacy/build/pdf.mjs";
-
-class NodeCanvasFactory {
-  create(width, height) {
-    assert(width > 0 && height > 0, "Invalid canvas size");
-    const canvas = Canvas.createCanvas(width, height);
-    const context = canvas.getContext("2d");
-    return {
-      canvas,
-      context,
-    };
-  }
-
-  reset(canvasAndContext, width, height) {
-    assert(canvasAndContext.canvas, "Canvas is not specified");
-    assert(width > 0 && height > 0, "Invalid canvas size");
-    canvasAndContext.canvas.width = width;
-    canvasAndContext.canvas.height = height;
-  }
-
-  destroy(canvasAndContext) {
-    assert(canvasAndContext.canvas, "Canvas is not specified");
-
-    // Zeroing the width and height cause Firefox to release graphics
-    // resources immediately, which can greatly reduce memory consumption.
-    canvasAndContext.canvas.width = 0;
-    canvasAndContext.canvas.height = 0;
-    canvasAndContext.canvas = null;
-    canvasAndContext.context = null;
-  }
-}
-
-// Some PDFs need external cmaps.
-const CMAP_URL = "../../../node_modules/pdfjs-dist/cmaps/";
-const CMAP_PACKED = true;
-
-// Where the standard fonts are located.
-const STANDARD_FONT_DATA_URL =
-  "../../../node_modules/pdfjs-dist/standard_fonts/";
-
-const canvasFactory = new NodeCanvasFactory();
-
-// Loading file from file system into typed array.
-const pdfPath =
-  process.argv[2] || "../../../web/compressed.tracemonkey-pldi-09.pdf";
-const data = new Uint8Array(fs.readFileSync(pdfPath));
-
-// Load the PDF file.
-const loadingTask = getDocument({
-  data,
-  cMapUrl: CMAP_URL,
-  cMapPacked: CMAP_PACKED,
-  standardFontDataUrl: STANDARD_FONT_DATA_URL,
-  canvasFactory,
-});
-
-try {
-  const pdfDocument = await loadingTask.promise;
-  console.log("# PDF document loaded.");
-  // Get the first page.
-  const page = await pdfDocument.getPage(1);
-  // Render the page on a Node canvas with 100% scale.
-  const viewport = page.getViewport({ scale: 1.0 });
-  const canvasAndContext = canvasFactory.create(
-    viewport.width,
-    viewport.height
-  );
-  const renderContext = {
-    canvasContext: canvasAndContext.context,
-    viewport,
-  };
-
-  const renderTask = page.render(renderContext);
-  await renderTask.promise;
-  // Convert the canvas to an image buffer.
-  const image = canvasAndContext.canvas.toBuffer();
-  fs.writeFile("output.png", image, function (error) {
-    if (error) {
-      console.error("Error: " + error);
-    } else {
-      console.log("Finished converting first page of PDF file to a PNG image.");
-    }
-  });
-  // Release page resources.
-  page.cleanup();
-} catch (reason) {
-  console.log(reason);
-}

examples/node/pdf2svg.js

@@ -0,0 +1,141 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+//
+// Node tool to dump SVG output into a file.
+//
+
+var fs = require("fs");
+var util = require("util");
+var path = require("path");
+var stream = require("stream");
+
+// HACK few hacks to let PDF.js be loaded not as a module in global space.
+require("./domstubs.js").setStubs(global);
+
+// Run `gulp dist-install` to generate 'pdfjs-dist' npm package files.
+var pdfjsLib = require("pdfjs-dist/es5/build/pdf.js");
+
+// Some PDFs need external cmaps.
+var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
+var CMAP_PACKED = true;
+
+// Loading file from file system into typed array
+var pdfPath = process.argv[2] || "../../web/compressed.tracemonkey-pldi-09.pdf";
+var data = new Uint8Array(fs.readFileSync(pdfPath));
+
+var outputDirectory = "./svgdump";
+
+try {
+  // Note: This creates a directory only one level deep. If you want to create
+  // multiple subdirectories on the fly, use the mkdirp module from npm.
+  fs.mkdirSync(outputDirectory);
+} catch (e) {
+  if (e.code !== "EEXIST") {
+    throw e;
+  }
+}
+
+// Dumps svg outputs to a folder called svgdump
+function getFilePathForPage(pageNum) {
+  var name = path.basename(pdfPath, path.extname(pdfPath));
+  return path.join(outputDirectory, name + "-" + pageNum + ".svg");
+}
+
+/**
+ * A readable stream which offers a stream representing the serialization of a
+ * given DOM element (as defined by domstubs.js).
+ *
+ * @param {object} options
+ * @param {DOMElement} options.svgElement The element to serialize
+ */
+function ReadableSVGStream(options) {
+  if (!(this instanceof ReadableSVGStream)) {
+    return new ReadableSVGStream(options);
+  }
+  stream.Readable.call(this, options);
+  this.serializer = options.svgElement.getSerializer();
+}
+util.inherits(ReadableSVGStream, stream.Readable);
+// Implements https://nodejs.org/api/stream.html#stream_readable_read_size_1
+ReadableSVGStream.prototype._read = function () {
+  var chunk;
+  while ((chunk = this.serializer.getNext()) !== null) {
+    if (!this.push(chunk)) {
+      return;
+    }
+  }
+  this.push(null);
+};
+
+// Streams the SVG element to the given file path.
+function writeSvgToFile(svgElement, filePath) {
+  var readableSvgStream = new ReadableSVGStream({
+    svgElement,
+  });
+  var writableStream = fs.createWriteStream(filePath);
+  return new Promise(function (resolve, reject) {
+    readableSvgStream.once("error", reject);
+    writableStream.once("error", reject);
+    writableStream.once("finish", resolve);
+    readableSvgStream.pipe(writableStream);
+  }).catch(function (err) {
+    readableSvgStream = null; // Explicitly null because of v8 bug 6512.
+    writableStream.end();
+    throw err;
+  });
+}
+
+// Will be using promises to load document, pages and misc data instead of
+// callback.
+var loadingTask = pdfjsLib.getDocument({
+  data,
+  cMapUrl: CMAP_URL,
+  cMapPacked: CMAP_PACKED,
+  fontExtraProperties: true,
+});
+loadingTask.promise
+  .then(function (doc) {
+    var numPages = doc.numPages;
+    console.log("# Document Loaded");
+    console.log("Number of Pages: " + numPages);
+    console.log();
+
+    var lastPromise = Promise.resolve(); // will be used to chain promises
+    var loadPage = function (pageNum) {
+      return doc.getPage(pageNum).then(function (page) {
+        console.log("# Page " + pageNum);
+        var viewport = page.getViewport({ scale: 1.0 });
+        console.log("Size: " + viewport.width + "x" + viewport.height);
+        console.log();
+
+        return page.getOperatorList().then(function (opList) {
+          var svgGfx = new pdfjsLib.SVGGraphics(page.commonObjs, page.objs);
+          svgGfx.embedFonts = true;
+          return svgGfx.getSVG(opList, viewport).then(function (svg) {
+            return writeSvgToFile(svg, getFilePathForPage(pageNum)).then(
+              function () {
+                console.log("Page: " + pageNum);
+              },
+              function (err) {
+                console.log("Error: " + err);
+              }
+            );
+          });
+        });
+      });
+    };
+
+    for (var i = 1; i <= numPages; i++) {
+      lastPromise = lastPromise.then(loadPage.bind(null, i));
+    }
+    return lastPromise;
+  })
+  .then(
+    function () {
+      console.log("# End of Document");
+    },
+    function (err) {
+      console.error("Error: " + err);
+    }
+  );

examples/svgviewer/README.md

@@ -0,0 +1,8 @@
+## PDF.js using SVG
+
+This is a project for implementing alternate backend for PDF.js using Scalable Vector Graphics. This is still a WIP.
+Take a look at [proposal](https://docs.google.com/document/d/1k4nPx1RrHbxXi94kSdvW5ay8KMkjwLmBEiCNupyzlwk/pub) for this project.
+
+## Getting started
+
+Take a look at src/display/svg.js to see the SVG rendering code.

examples/svgviewer/index.html

@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<!--
+Copyright 2014 Mozilla Foundation
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<html dir="ltr" mozdisallowselectionprint>
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
+  <meta name="google" content="notranslate">
+  <title>PDF.js SVG viewer using built components</title>
+
+  <style>
+    body {
+      background-color: #808080;
+      margin: 0;
+      padding: 0;
+    }
+    #viewerContainer {
+      overflow: auto;
+      position: absolute;
+      width: 100%;
+      height: 100%;
+    }
+  </style>
+
+  <link rel="stylesheet" href="../../node_modules/pdfjs-dist/web/pdf_viewer.css">
+
+  <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
+  <script src="../../node_modules/pdfjs-dist/web/pdf_viewer.js"></script>
+</head>
+
+<body tabindex="1">
+  <div id="viewerContainer">
+    <div id="viewer" class="pdfViewer"></div>
+  </div>
+
+  <script src="viewer.js"></script>
+</body>
+</html>

examples/svgviewer/viewer.js

@@ -0,0 +1,70 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+"use strict";
+
+if (!pdfjsLib.getDocument || !pdfjsViewer.PDFViewer) {
+  // eslint-disable-next-line no-alert
+  alert("Please build the pdfjs-dist library using\n  `gulp dist-install`");
+}
+
+// The workerSrc property shall be specified.
+//
+pdfjsLib.GlobalWorkerOptions.workerSrc =
+  "../../node_modules/pdfjs-dist/build/pdf.worker.js";
+
+// Some PDFs need external cmaps.
+//
+var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
+var CMAP_PACKED = true;
+
+var DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
+
+var container = document.getElementById("viewerContainer");
+
+var eventBus = new pdfjsViewer.EventBus();
+
+// (Optionally) enable hyperlinks within PDF files.
+var pdfLinkService = new pdfjsViewer.PDFLinkService({
+  eventBus,
+});
+
+var pdfViewer = new pdfjsViewer.PDFViewer({
+  container,
+  eventBus,
+  linkService: pdfLinkService,
+  renderer: "svg",
+  textLayerMode: 0,
+});
+pdfLinkService.setViewer(pdfViewer);
+
+eventBus.on("pagesinit", function () {
+  // We can use pdfViewer now, e.g. let's change default scale.
+  pdfViewer.currentScaleValue = "page-width";
+});
+
+// Loading document.
+var loadingTask = pdfjsLib.getDocument({
+  url: DEFAULT_URL,
+  cMapUrl: CMAP_URL,
+  cMapPacked: CMAP_PACKED,
+});
+loadingTask.promise.then(function (pdfDocument) {
+  // Document loaded, specifying document for the viewer and
+  // the (optional) linkService.
+  pdfViewer.setDocument(pdfDocument);
+
+  pdfLinkService.setDocument(pdfDocument, null);
+});

examples/text-only/index.html

@@ -3,8 +3,8 @@
 <head>
     <meta charset="UTF-8">
     <title>Text-only PDF.js example</title>
-    <script src="../../node_modules/pdfjs-dist/build/pdf.mjs" type="module"></script>
+    <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
-    <script src="pdf2svg.mjs" type="module"></script>
+    <script src="pdf2svg.js"></script>
 </head>
 <body>
   <p>Text-only PDF.js example</p>

examples/text-only/pdf2svg.js

@@ -13,17 +13,17 @@
  * limitations under the License.
  */
 
-const PDF_PATH = "../../web/compressed.tracemonkey-pldi-09.pdf";
+var PDF_PATH = "../../web/compressed.tracemonkey-pldi-09.pdf";
-const PAGE_NUMBER = 1;
+var PAGE_NUMBER = 1;
-const PAGE_SCALE = 1.5;
+var PAGE_SCALE = 1.5;
-const SVG_NS = "http://www.w3.org/2000/svg";
+var SVG_NS = "http://www.w3.org/2000/svg";
 
 pdfjsLib.GlobalWorkerOptions.workerSrc =
-  "../../node_modules/pdfjs-dist/build/pdf.worker.mjs";
+  "../../node_modules/pdfjs-dist/build/pdf.worker.js";
 
 function buildSVG(viewport, textContent) {
   // Building SVG with size of the viewport (for simplicity)
-  const svg = document.createElementNS(SVG_NS, "svg:svg");
+  var svg = document.createElementNS(SVG_NS, "svg:svg");
   svg.setAttribute("width", viewport.width + "px");
   svg.setAttribute("height", viewport.height + "px");
   // items are transformed to have 1px font size
@@ -33,33 +33,34 @@ function buildSVG(viewport, textContent) {
   textContent.items.forEach(function (textItem) {
     // we have to take in account viewport transform, which includes scale,
     // rotation and Y-axis flip, and not forgetting to flip text.
-    const tx = pdfjsLib.Util.transform(
+    var tx = pdfjsLib.Util.transform(
       pdfjsLib.Util.transform(viewport.transform, textItem.transform),
       [1, 0, 0, -1, 0, 0]
     );
-    const style = textContent.styles[textItem.fontName];
+    var style = textContent.styles[textItem.fontName];
     // adding text element
-    const text = document.createElementNS(SVG_NS, "svg:text");
+    var text = document.createElementNS(SVG_NS, "svg:text");
     text.setAttribute("transform", "matrix(" + tx.join(" ") + ")");
     text.setAttribute("font-family", style.fontFamily);
     text.textContent = textItem.str;
-    svg.append(text);
+    svg.appendChild(text);
   });
   return svg;
 }
 
-async function pageLoaded() {
+function pageLoaded() {
   // Loading document and page text content
-  const loadingTask = pdfjsLib.getDocument({ url: PDF_PATH });
+  var loadingTask = pdfjsLib.getDocument({ url: PDF_PATH });
-  const pdfDocument = await loadingTask.promise;
+  loadingTask.promise.then(function (pdfDocument) {
-  const page = await pdfDocument.getPage(PAGE_NUMBER);
+    pdfDocument.getPage(PAGE_NUMBER).then(function (page) {
-  const viewport = page.getViewport({ scale: PAGE_SCALE });
+      var viewport = page.getViewport({ scale: PAGE_SCALE });
-  const textContent = await page.getTextContent();
+      page.getTextContent().then(function (textContent) {
         // building SVG and adding that to the DOM
-  const svg = buildSVG(viewport, textContent);
+        var svg = buildSVG(viewport, textContent);
-  document.getElementById("pageContainer").append(svg);
+        document.getElementById("pageContainer").appendChild(svg);
-  // Release page resources.
+      });
-  page.cleanup();
+    });
+  });
 }
 
 document.addEventListener("DOMContentLoaded", function () {

examples/webpack/README.md

@@ -18,16 +18,15 @@ Refer to the `main.js` and `webpack.config.js` files for the source code.
 Note that PDF.js packaging requires packaging of the main application and
 the worker code, and the `workerSrc` path shall be set to the latter file.
 
-### Minification
-
-If you are configuring Webpack to output a minified build, please note that you
-*must* configure the minifier to keep original class/function names intact;
-otherwise the build is not guaranteed to work correctly.
-
 ## Worker loading
 
 If you are getting the `Setting up fake worker` warning, make sure you are
-importing `pdfjs-dist/webpack.mjs` which is the zero-configuration method for
+importing `pdfjs-dist/webpack` which is the zero-configuration method for
-Webpack users. Installing `worker-loader` is no longer necessary.
+Webpack users. You will need to install
+[worker-loader](https://github.com/webpack-contrib/worker-loader) (version 3.0.0 or higher is required), as a
+dependency in your project in order to use `pdfjs-dist/webpack` (configuring
+`worker-loader` is not necessary; just installing it is sufficient).
 
-    import * as pdfjsLib from 'pdfjs-dist/webpack.mjs';
+    import pdfjsLib from 'pdfjs-dist/webpack';
+
+For a full working example refer to [this repository](https://github.com/yurydelendik/pdfjs-react).

examples/webpack/main.js

@@ -0,0 +1,35 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+// Hello world example for webpack.
+
+var pdfjsLib = require("pdfjs-dist");
+
+var pdfPath = "../learning/helloworld.pdf";
+
+// Setting worker path to worker bundle.
+pdfjsLib.GlobalWorkerOptions.workerSrc =
+  "../../build/webpack/pdf.worker.bundle.js";
+
+// Loading a document.
+var loadingTask = pdfjsLib.getDocument(pdfPath);
+loadingTask.promise
+  .then(function (pdfDocument) {
+    // Request a first page
+    return pdfDocument.getPage(1).then(function (pdfPage) {
+      // Display page on the existing canvas with 100% scale.
+      var viewport = pdfPage.getViewport({ scale: 1.0 });
+      var canvas = document.getElementById("theCanvas");
+      canvas.width = viewport.width;
+      canvas.height = viewport.height;
+      var ctx = canvas.getContext("2d");
+      var renderTask = pdfPage.render({
+        canvasContext: ctx,
+        viewport,
+      });
+      return renderTask.promise;
+    });
+  })
+  .catch(function (reason) {
+    console.error("Error: " + reason);
+  });

examples/webpack/main.mjs

@@ -1,29 +0,0 @@
-// Any copyright is dedicated to the Public Domain.
-// http://creativecommons.org/licenses/publicdomain/
-
-// Hello world example for webpack.
-
-import * as pdfjsLib from "pdfjs-dist";
-
-const pdfPath = "../learning/helloworld.pdf";
-
-// Setting worker path to worker bundle.
-pdfjsLib.GlobalWorkerOptions.workerSrc =
-  "../../build/webpack/pdf.worker.bundle.js";
-
-// Loading a document.
-const loadingTask = pdfjsLib.getDocument(pdfPath);
-const pdfDocument = await loadingTask.promise;
-// Request a first page
-const pdfPage = await pdfDocument.getPage(1);
-// Display page on the existing canvas with 100% scale.
-const viewport = pdfPage.getViewport({ scale: 1.0 });
-const canvas = document.getElementById("theCanvas");
-canvas.width = viewport.width;
-canvas.height = viewport.height;
-const ctx = canvas.getContext("2d");
-const renderTask = pdfPage.render({
-  canvasContext: ctx,
-  viewport,
-});
-await renderTask.promise;

examples/webpack/package.json

@@ -1,12 +1,12 @@
 {
   "name": "webpack-pdf.js-example",
-  "version": "0.2.0",
+  "version": "0.1.0",
   "scripts": {
     "build": "webpack"
   },
   "devDependencies": {
-    "webpack": "^5.89.0",
+    "webpack": "^5.11.1",
-    "webpack-cli": "^5.1.4",
+    "webpack-cli": "^4.3.1",
     "pdfjs-dist": "../../node_modules/pdfjs-dist"
   }
 }

examples/webpack/webpack.config.js

@@ -1,13 +1,11 @@
-/* eslint-disable import/no-commonjs */
+var webpack = require("webpack"); // eslint-disable-line no-unused-vars
-
+var path = require("path");
-const webpack = require("webpack"); // eslint-disable-line no-unused-vars
-const path = require("path");
 
 module.exports = {
   context: __dirname,
   entry: {
-    main: "./main.mjs",
+    main: "./main.js",
-    "pdf.worker": "pdfjs-dist/build/pdf.worker.mjs",
+    "pdf.worker": "pdfjs-dist/build/pdf.worker.entry",
   },
   mode: "none",
   output: {

extensions/chromium/.eslintrc

@@ -17,6 +17,6 @@
 
   "rules": {
     "mozilla/import-globals": "error",
-    "no-var": "off",
+    "object-shorthand": "off",
   },
 }

extensions/chromium/contentscript.js

@@ -22,7 +22,11 @@ function getViewerURL(pdf_url) {
   return VIEWER_URL + "?file=" + encodeURIComponent(pdf_url);
 }
 
+if (CSS.supports("animation", "0s")) {
   document.addEventListener("animationstart", onAnimationStart, true);
+} else {
+  document.addEventListener("webkitAnimationStart", onAnimationStart, true);
+}
 
 function onAnimationStart(event) {
   if (event.animationName === "pdfjs-detected-object-or-embed") {
@@ -124,15 +128,11 @@ function updateEmbedElement(elem) {
   var parentNode = elem.parentNode;
   var nextSibling = elem.nextSibling;
   if (parentNode) {
-    elem.remove();
+    parentNode.removeChild(elem);
   }
   elem.type = "text/html";
   elem.src = getEmbeddedViewerURL(elem.src);
-
   if (parentNode) {
-    // Suppress linter warning: insertBefore is preferable to
-    // nextSibling.before(elem) because nextSibling may be null.
-    // eslint-disable-next-line unicorn/prefer-modern-dom-apis
     parentNode.insertBefore(elem, nextSibling);
   }
 }
@@ -160,7 +160,7 @@ function updateObjectElement(elem) {
   if (!iframe || !iframe.__inserted_by_pdfjs) {
     iframe = createFullSizeIframe();
     elem.textContent = "";
-    elem.append(iframe);
+    elem.appendChild(iframe);
     iframe.__inserted_by_pdfjs = true;
   }
   iframe.src = getEmbeddedViewerURL(elem.data);

extensions/chromium/contentstyle.css

@@ -1,6 +1,11 @@
 /**
  * Detect creation of <embed> and <object> tags.
  */
+@-webkit-keyframes pdfjs-detected-object-or-embed {
+  from {
+    /* empty */
+  }
+}
 @keyframes pdfjs-detected-object-or-embed {
   from {
     /* empty */
@@ -8,6 +13,9 @@
 }
 object,
 embed {
+  -webkit-animation-delay: 0s !important;
+  -webkit-animation-name: pdfjs-detected-object-or-embed !important;
+  -webkit-animation-play-state: running !important;
   animation-delay: 0s !important;
   animation-name: pdfjs-detected-object-or-embed !important;
   animation-play-state: running !important;

extensions/chromium/extension-router.js

@@ -47,7 +47,7 @@ limitations under the License.
     }
     var scheme = url.slice(0, schemeIndex).toLowerCase();
     if (schemes.includes(scheme)) {
-      url = url.split("#", 1)[0];
+      url = url.split("#")[0];
       if (url.charAt(schemeIndex) === ":") {
         url = encodeURIComponent(url);
       }
@@ -95,8 +95,8 @@ limitations under the License.
       url: CRX_BASE_URL + "*:*",
     },
     function (tabsFromLastSession) {
-      for (const { id } of tabsFromLastSession) {
+      for (var i = 0; i < tabsFromLastSession.length; ++i) {
-        chrome.tabs.reload(id);
+        chrome.tabs.reload(tabsFromLastSession[i].id);
       }
     }
   );

extensions/chromium/manifest.json

@@ -1,5 +1,4 @@
 {
-  "minimum_chrome_version": "88",
   "manifest_version": 2,
   "name": "PDF Viewer",
   "version": "PDFJSSCRIPT_VERSION",
@@ -11,30 +10,32 @@
   },
   "permissions": [
     "fileBrowserHandler",
-    "webRequest",
+    "webRequest", "webRequestBlocking",
-    "webRequestBlocking",
     "<all_urls>",
     "tabs",
     "webNavigation",
     "storage"
   ],
-  "content_scripts": [
+  "content_scripts": [{
-    {
+    "matches": [
-      "matches": ["http://*/*", "https://*/*", "ftp://*/*", "file://*/*"],
+      "http://*/*",
+      "https://*/*",
+      "ftp://*/*",
+      "file://*/*"
+    ],
     "run_at": "document_start",
     "all_frames": true,
     "css": ["contentstyle.css"],
     "js": ["contentscript.js"]
-    }
+  }],
-  ],
   "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
-  "file_browser_handlers": [
+  "file_browser_handlers": [{
-    {
     "id": "open-as-pdf",
     "default_title": "Open with PDF Viewer",
-      "file_filters": ["filesystem:*.pdf"]
+    "file_filters": [
-    }
+      "filesystem:*.pdf"
-  ],
+    ]
+  }],
   "storage": {
     "managed_schema": "preferences_schema.json"
   },

extensions/chromium/options/migration.js

@@ -109,10 +109,17 @@ limitations under the License.
         }
         // Migration code for https://github.com/mozilla/pdf.js/pull/9479.
         if (typeof items.disableTextLayer === "boolean") {
+          var textLayerMode = 1;
           if (items.disableTextLayer) {
+            textLayerMode = 0;
+          } else if (items.enhanceTextSelection) {
+            textLayerMode = 2;
+          }
+          if (textLayerMode !== 1) {
+            // Overwrite if computed textLayerMode is not the default value (1).
             storageSync.set(
               {
-                textLayerMode: 0,
+                textLayerMode: textLayerMode,
               },
               function () {
                 if (!chrome.runtime.lastError) {

extensions/chromium/options/options.html

@@ -43,19 +43,6 @@ body {
 </div>
 </template>
 
-<template id="viewerCssTheme-template">
-<div class="settings-row">
-  <label>
-    <span></span>
-    <select>
-      <option value="0">Use system theme</option>
-      <option value="1">Light theme</option>
-      <option value="2">Dark theme</option>
-    </select>
-  </label>
-</div>
-</template>
-
 <template id="viewOnLoad-template">
 <div class="settings-row">
   <label>
@@ -126,6 +113,7 @@ body {
     <select>
       <option value="0">Disable text selection</option>
       <option value="1">Enable text selection</option>
+      <option value="2">Enable enhanced mode (experimental)</option>
     </select>
   </label>
 </div>
@@ -152,7 +140,6 @@ body {
     <span></span>
     <select>
       <option value="-1">Default</option>
-      <option value="3">Page scrolling</option>
       <option value="0">Vertical scrolling</option>
       <option value="1">Horizontal scrolling</option>
       <option value="2">Wrapped scrolling</option>

extensions/chromium/options/options.js

@@ -155,7 +155,7 @@ function renderBooleanPref(shortDescription, description, prefName) {
     storageArea.set(pref);
   };
   wrapper.querySelector("span").textContent = shortDescription;
-  document.getElementById("settings-boxes").append(wrapper);
+  document.getElementById("settings-boxes").appendChild(wrapper);
 
   function renderPreference(value) {
     checkbox.checked = value;
@@ -172,7 +172,7 @@ function renderEnumPref(shortDescription, prefName) {
     storageArea.set(pref);
   };
   wrapper.querySelector("span").textContent = shortDescription;
-  document.getElementById("settings-boxes").append(wrapper);
+  document.getElementById("settings-boxes").appendChild(wrapper);
 
   function renderPreference(value) {
     select.value = value;
@@ -189,7 +189,7 @@ function renderDefaultZoomValue(shortDescription) {
     });
   };
   wrapper.querySelector("span").textContent = shortDescription;
-  document.getElementById("settings-boxes").append(wrapper);
+  document.getElementById("settings-boxes").appendChild(wrapper);
 
   function renderPreference(value) {
     value = value || "auto";

extensions/chromium/pageAction/background.js

@@ -28,7 +28,7 @@ limitations under the License.
     if (url) {
       url = url[1];
       chrome.pageAction.setPopup({
-        tabId,
+        tabId: tabId,
         popup: "/pageAction/popup.html?file=" + encodeURIComponent(url),
       });
       chrome.pageAction.show(tabId);

extensions/chromium/pdfHandler-vcros.js

@@ -78,9 +78,9 @@ limitations under the License.
     if (windowId) {
       chrome.tabs.create(
         {
-          windowId,
+          windowId: windowId,
           active: true,
-          url,
+          url: url,
         },
         function () {
           openViewer(windowId, fileEntries);
@@ -91,7 +91,7 @@ limitations under the License.
         {
           type: "normal",
           focused: true,
-          url,
+          url: url,
         },
         function (chromeWindow) {
           openViewer(chromeWindow.id, fileEntries);

extensions/chromium/pdfHandler.js

@@ -20,15 +20,7 @@ limitations under the License.
 var VIEWER_URL = chrome.extension.getURL("content/web/viewer.html");
 
 function getViewerURL(pdf_url) {
-  // |pdf_url| may contain a fragment such as "#page=2". That should be passed
+  return VIEWER_URL + "?file=" + encodeURIComponent(pdf_url);
-  // as a fragment to the viewer, not encoded in pdf_url.
-  var hash = "";
-  var i = pdf_url.indexOf("#");
-  if (i > 0) {
-    hash = pdf_url.slice(i);
-    pdf_url = pdf_url.slice(0, i);
-  }
-  return VIEWER_URL + "?file=" + encodeURIComponent(pdf_url) + hash;
 }
 
 /**
@@ -62,7 +54,8 @@ function isPdfDownloadable(details) {
  * @returns {undefined|{name: string, value: string}} The header, if found.
  */
 function getHeaderFromHeaders(headers, headerName) {
-  for (const header of headers) {
+  for (var i = 0; i < headers.length; ++i) {
+    var header = headers[i];
     if (header.name.toLowerCase() === headerName) {
       return header;
     }
@@ -162,7 +155,19 @@ chrome.webRequest.onBeforeRequest.addListener(
     return { redirectUrl: viewerUrl };
   },
   {
-    urls: ["file://*/*.pdf", "file://*/*.PDF"],
+    urls: [
+      "file://*/*.pdf",
+      "file://*/*.PDF",
+      ...// Duck-typing: MediaError.prototype.message was added in Chrome 59.
+      (MediaError.prototype.hasOwnProperty("message")
+        ? []
+        : [
+            // Note: Chrome 59 has disabled ftp resource loading by default:
+            // https://www.chromestatus.com/feature/5709390967472128
+            "ftp://*/*.pdf",
+            "ftp://*/*.PDF",
+          ]),
+    ],
     types: ["main_frame", "sub_frame"],
   },
   ["blocking"]
@@ -237,14 +242,21 @@ chrome.runtime.onMessage.addListener(function (message, sender, sendResponse) {
       chrome.tabs.create({
         windowId: sender.tab.windowId,
         index: sender.tab.index + 1,
-        url,
+        url: url,
         openerTabId: sender.tab.id,
       });
     } else {
       chrome.tabs.update(sender.tab.id, {
-        url,
+        url: url,
       });
     }
   }
   return undefined;
 });
+
+// Remove keys from storage that were once part of the deleted feature-detect.js
+chrome.storage.local.remove([
+  "featureDetectLastUA",
+  "webRequestRedirectUrl",
+  "extensionSupportsFTP",
+]);

extensions/chromium/preferences_schema.json

@@ -1,13 +1,6 @@
 {
   "type": "object",
   "properties": {
-    "viewerCssTheme": {
-      "title": "Theme",
-      "description": "The theme to use.\n0 = Use system theme.\n1 = Light theme.\n2 = Dark theme.",
-      "type": "integer",
-      "enum": [0, 1, 2],
-      "default": 2
-    },
     "showPreviousViewOnLoad": {
       "description": "DEPRECATED. Set viewOnLoad to 1 to disable showing the last page/position on load.",
       "type": "boolean",
@@ -17,15 +10,13 @@
       "title": "View position on load",
       "description": "The position in the document upon load.\n -1 = Default (uses OpenAction if available, otherwise equal to `viewOnLoad = 0`).\n 0 = The last viewed page/position.\n 1 = The initial page/position.",
       "type": "integer",
-      "enum": [-1, 0, 1],
+      "enum": [
+        -1,
+        0,
+        1
+      ],
       "default": 0
     },
-    "defaultZoomDelay": {
-      "title": "Default zoom delay",
-      "description": "Delay (in ms) to wait before redrawing the canvas.",
-      "type": "integer",
-      "default": 400
-    },
     "defaultZoomValue": {
       "title": "Default zoom level",
       "description": "Default zoom level of the viewer. Accepted values: 'auto', 'page-actual', 'page-width', 'page-height', 'page-fit', or a zoom level in percents.",
@@ -37,7 +28,13 @@
       "title": "Sidebar state on load",
       "description": "Controls the state of the sidebar upon load.\n -1 = Default (uses PageMode if available, otherwise the last position if available/enabled).\n 0 = Do not show sidebar.\n 1 = Show thumbnails in sidebar.\n 2 = Show document outline in sidebar.\n 3 = Show attachments in sidebar.",
       "type": "integer",
-      "enum": [-1, 0, 1, 2, 3],
+      "enum": [
+        -1,
+        0,
+        1,
+        2,
+        3
+      ],
       "default": -1
     },
     "enableHandToolOnLoad": {
@@ -45,45 +42,28 @@
       "type": "boolean",
       "default": false
     },
-    "enableML": {
-      "type": "boolean",
-      "default": false
-    },
     "cursorToolOnLoad": {
       "title": "Cursor tool on load",
       "description": "The cursor tool that is enabled upon load.\n 0 = Text selection tool.\n 1 = Hand tool.",
       "type": "integer",
-      "enum": [0, 1],
+      "enum": [
+        0,
+        1
+      ],
       "default": 0
     },
+    "enableWebGL": {
+      "title": "Enable WebGL",
+      "description": "Whether to enable WebGL.",
+      "type": "boolean",
+      "default": false
+    },
     "pdfBugEnabled": {
       "title": "Enable debugging tools",
       "description": "Whether to enable debugging tools.",
       "type": "boolean",
       "default": false
     },
-    "enableScripting": {
-      "title": "Enable active content (JavaScript) in PDFs",
-      "type": "boolean",
-      "description": "Whether to allow execution of active content (JavaScript) by PDF files.",
-      "default": false
-    },
-    "enableHighlightEditor": {
-      "type": "boolean",
-      "default": false
-    },
-    "enableHighlightFloatingButton": {
-      "type": "boolean",
-      "default": false
-    },
-    "highlightEditorColors": {
-      "type": "string",
-      "default": "yellow=#FFFF98,green=#53FFBC,blue=#80EBFF,pink=#FFCBE6,red=#FF4F5F"
-    },
-    "enableStampEditor": {
-      "type": "boolean",
-      "default": true
-    },
     "disableRange": {
       "title": "Disable range requests",
       "description": "Whether to disable range requests (not recommended).",
@@ -111,18 +91,37 @@
       "type": "boolean",
       "default": false
     },
+    "enhanceTextSelection": {
+      "description": "DEPRECATED. Set textLayerMode to 2 to use the enhanced text selection layer by default.",
+      "type": "boolean",
+      "default": false
+    },
     "textLayerMode": {
       "title": "Text layer mode",
-      "description": "Controls if the text layer is enabled, and the selection mode that is used.\n 0 = Disabled.\n 1 = Enabled.",
+      "description": "Controls if the text layer is enabled, and the selection mode that is used.\n 0 = Disabled.\n 1 = Enabled.\n 2 = (Experimental) Enabled, with enhanced text selection.",
       "type": "integer",
-      "enum": [0, 1],
+      "enum": [
+        0,
+        1,
+        2
+      ],
       "default": 1
     },
+    "useOnlyCssZoom": {
+      "type": "boolean",
+      "default": false
+    },
     "externalLinkTarget": {
       "title": "External links target window",
       "description": "Controls how external links will be opened.\n 0 = default.\n 1 = replaces current window.\n 2 = new window/tab.\n 3 = parent.\n 4 = in top window.",
       "type": "integer",
-      "enum": [0, 1, 2, 3, 4],
+      "enum": [
+        0,
+        1,
+        2,
+        3,
+        4
+      ],
       "default": 0
     },
     "disablePageLabels": {
@@ -140,24 +139,26 @@
       "description": "Whether to prevent the extension from reporting the extension and browser version to the extension developers.",
       "default": false
     },
-    "annotationMode": {
+    "renderer": {
-      "type": "integer",
+      "type": "string",
-      "enum": [0, 1, 2, 3],
+      "enum": [
-      "default": 2
+        "canvas",
+        "svg"
+      ],
+      "default": "canvas"
     },
-    "annotationEditorMode": {
+    "renderInteractiveForms": {
-      "type": "integer",
+      "type": "boolean",
-      "enum": [-1, 0, 3, 15],
+      "default": true
-      "default": 0
+    },
+    "enableScripting": {
+      "type": "boolean",
+      "default": false
     },
     "enablePermissions": {
       "type": "boolean",
       "default": false
     },
-    "enableXfa": {
-      "type": "boolean",
-      "default": true
-    },
     "historyUpdateUrl": {
       "type": "boolean",
       "default": false
@@ -172,36 +173,40 @@
       "title": "Automatically rotate printed pages",
       "description": "When enabled, landscape pages are rotated when printed.",
       "type": "boolean",
-      "default": true
+      "default": false
     },
     "scrollModeOnLoad": {
       "title": "Scroll mode on load",
-      "description": "Controls how the viewer scrolls upon load.\n -1 = Default (uses the last position if available/enabled).\n 3 = Page scrolling.\n 0 = Vertical scrolling.\n 1 = Horizontal scrolling.\n 2 = Wrapped scrolling.",
+      "description": "Controls how the viewer scrolls upon load.\n -1 = Default (uses the last position if available/enabled).\n 0 = Vertical scrolling.\n 1 = Horizontal scrolling.\n 2 = Wrapped scrolling.",
       "type": "integer",
-      "enum": [-1, 0, 1, 2, 3],
+      "enum": [
+        -1,
+        0,
+        1,
+        2
+      ],
       "default": -1
     },
     "spreadModeOnLoad": {
       "title": "Spread mode on load",
       "description": "Whether the viewer should join pages into spreads upon load.\n -1 = Default (uses the last position if available/enabled).\n 0 = No spreads.\n 1 = Odd spreads.\n 2 = Even spreads.",
       "type": "integer",
-      "enum": [-1, 0, 1, 2],
+      "enum": [
+        -1,
+        0,
+        1,
+        2
+      ],
       "default": -1
     },
-    "forcePageColors": {
+    "viewerCssTheme": {
-      "description": "When enabled, the pdf rendering will use the high contrast mode colors",
+      "type": "integer",
-      "type": "boolean",
+      "enum": [
-      "default": false
+        0,
-    },
+        1,
-    "pageColorsBackground": {
+        2
-      "description": "The color is a string as defined in CSS. Its goal is to help improve readability in high contrast mode",
+      ],
-      "type": "string",
+      "default": 0
-      "default": "Canvas"
-    },
-    "pageColorsForeground": {
-      "description": "The color is a string as defined in CSS. Its goal is to help improve readability in high contrast mode",
-      "type": "string",
-      "default": "CanvasText"
     }
   }
 }

extensions/chromium/preserve-referer.js

@@ -14,7 +14,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 /* import-globals-from pdfHandler.js */
-/* exported saveReferer */
 
 "use strict";
 /**
@@ -42,18 +41,30 @@ var g_requestHeaders = {};
 // g_referrers[tabId][frameId] = referrer of PDF frame.
 var g_referrers = {};
 
+var extraInfoSpecWithHeaders; // = ['requestHeaders', 'extraHeaders']
+
 (function () {
   var requestFilter = {
     urls: ["*://*/*"],
     types: ["main_frame", "sub_frame"],
   };
+  function registerListener(extraInfoSpec) {
+    extraInfoSpecWithHeaders = extraInfoSpec;
+    // May throw if the given extraInfoSpec is unsupported.
     chrome.webRequest.onSendHeaders.addListener(
       function (details) {
         g_requestHeaders[details.requestId] = details.requestHeaders;
       },
       requestFilter,
-    ["requestHeaders", "extraHeaders"]
+      extraInfoSpec
     );
+  }
+  try {
+    registerListener(["requestHeaders", "extraHeaders"]);
+  } catch (e) {
+    // "extraHeaders" is not supported in Chrome 71 and earlier.
+    registerListener(["requestHeaders"]);
+  }
   chrome.webRequest.onBeforeRedirect.addListener(forgetHeaders, requestFilter);
   chrome.webRequest.onCompleted.addListener(forgetHeaders, requestFilter);
   chrome.webRequest.onErrorOccurred.addListener(forgetHeaders, requestFilter);
@@ -112,9 +123,9 @@ chrome.runtime.onConnect.addListener(function onReceivePort(port) {
         {
           urls: [data.requestUrl],
           types: ["xmlhttprequest"],
-          tabId,
+          tabId: tabId,
         },
-        ["blocking", "requestHeaders", "extraHeaders"]
+        ["blocking", ...extraInfoSpecWithHeaders]
       );
     }
     // Acknowledge the message, and include the latest referer for this frame.
@@ -137,7 +148,7 @@ chrome.runtime.onConnect.addListener(function onReceivePort(port) {
     {
       urls: ["https://*/*"],
       types: ["xmlhttprequest"],
-      tabId,
+      tabId: tabId,
     },
     ["blocking", "responseHeaders"]
   );

extensions/chromium/telemetry.js

@@ -70,6 +70,12 @@ limitations under the License.
 
       var deduplication_id = getDeduplicationId(wasUpdated);
       var extension_version = chrome.runtime.getManifest().version;
+      if (window.Request && "mode" in Request.prototype) {
+        // fetch is supported in extensions since Chrome 42 (though the above
+        // feature-detection method detects Chrome 43+).
+        // Unlike XMLHttpRequest, fetch omits credentials such as cookies in the
+        // requests, which guarantees that the server cannot track the client
+        // via HTTP cookies.
         fetch(LOG_URL, {
           method: "POST",
           headers: new Headers({
@@ -79,11 +85,14 @@ limitations under the License.
           // Set mode=cors so that the above custom headers are included in the
           // request.
           mode: "cors",
-        // Omits credentials such as cookies in the requests, which guarantees
-        // that the server cannot track the client via HTTP cookies.
-        credentials: "omit",
-        cache: "no-store",
         });
+        return;
+      }
+      var x = new XMLHttpRequest();
+      x.open("POST", LOG_URL);
+      x.setRequestHeader("Deduplication-Id", deduplication_id);
+      x.setRequestHeader("Extension-Version", extension_version);
+      x.send();
     });
   }
 
@@ -101,7 +110,8 @@ limitations under the License.
       id = "";
       var buf = new Uint8Array(5);
       crypto.getRandomValues(buf);
-      for (const c of buf) {
+      for (var i = 0; i < buf.length; ++i) {
+        var c = buf[i];
         id += (c >>> 4).toString(16) + (c & 0xf).toString(16);
       }
       localStorage.telemetryDeduplicationId = id;

extensions/firefox/.eslintrc

@@ -6,11 +6,17 @@
     "plugin:mozilla/recommended",
   ],
 
+  "parserOptions": {
+    "sourceType": "script",
+  },
+
   "plugins": [
     "mozilla"
   ],
 
   "rules": {
+    // Items different from the mozilla/recommended configuration.
+
     // Other rules mozilla/recommended hasn't enabled yet.
     "no-shadow": "error",
     "arrow-body-style": ["error", "as-needed"],

extensions/firefox/README.mozilla

@@ -0,0 +1,5 @@
+This is the PDF.js project output, https://github.com/mozilla/pdf.js
+
+Current extension version is: PDFJSSCRIPT_VERSION
+
+Taken from upstream commit: PDFJSSCRIPT_COMMIT

extensions/firefox/content/PdfJsDefaultPreferences.jsm

@@ -1,4 +1,4 @@
-/* Copyright 2021 Mozilla Foundation
+/* Copyright 2018 Mozilla Foundation
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,8 +13,10 @@
  * limitations under the License.
  */
 
-.xfaLink {
+"use strict";
-  opacity: 0.2;
+
-  background: rgb(255 255 0);
+var EXPORTED_SYMBOLS = ["PdfJsDefaultPreferences"];
-  box-shadow: 0 2px 10px rgb(255 255 0);
+
-}
+var PdfJsDefaultPreferences = Object.freeze(
+  PDFJSDev.json("$ROOT/build/default_preferences.json")
+);

extensions/firefox/tools/l10n.js

@@ -0,0 +1,131 @@
+"use strict";
+
+// Small subset of the webL10n API by Fabien Cazenave for PDF.js extension.
+(function (window) {
+  var gLanguage = "";
+  var gExternalLocalizerServices = null;
+  var gReadyState = "loading";
+
+  // fetch an l10n objects
+  function getL10nData(key) {
+    var response = gExternalLocalizerServices.getStrings(key);
+    var data = JSON.parse(response);
+    if (!data) {
+      console.warn("[l10n] #" + key + " missing for [" + gLanguage + "]");
+    }
+    return data;
+  }
+
+  // replace {{arguments}} with their values
+  function substArguments(text, args) {
+    if (!args) {
+      return text;
+    }
+    return text.replace(/\{\{\s*(\w+)\s*\}\}/g, function (all, name) {
+      return name in args ? args[name] : "{{" + name + "}}";
+    });
+  }
+
+  // translate a string
+  function translateString(key, args, fallback) {
+    var i = key.lastIndexOf(".");
+    var name, property;
+    if (i >= 0) {
+      name = key.substring(0, i);
+      property = key.substring(i + 1);
+    } else {
+      name = key;
+      property = "textContent";
+    }
+    var data = getL10nData(name);
+    var value = (data && data[property]) || fallback;
+    if (!value) {
+      return "{{" + key + "}}";
+    }
+    return substArguments(value, args);
+  }
+
+  // translate an HTML element
+  function translateElement(element) {
+    if (!element || !element.dataset) {
+      return;
+    }
+
+    // get the related l10n object
+    var key = element.dataset.l10nId;
+    var data = getL10nData(key);
+    if (!data) {
+      return;
+    }
+
+    // get arguments (if any)
+    // TODO: more flexible parser?
+    var args;
+    if (element.dataset.l10nArgs) {
+      try {
+        args = JSON.parse(element.dataset.l10nArgs);
+      } catch (e) {
+        console.warn("[l10n] could not parse arguments for #" + key + "");
+      }
+    }
+
+    // translate element
+    // TODO: security check?
+    for (var k in data) {
+      element[k] = substArguments(data[k], args);
+    }
+  }
+
+  // translate an HTML subtree
+  function translateFragment(element) {
+    element = element || document.querySelector("html");
+
+    // check all translatable children (= w/ a `data-l10n-id' attribute)
+    var children = element.querySelectorAll("*[data-l10n-id]");
+    var elementCount = children.length;
+    for (var i = 0; i < elementCount; i++) {
+      translateElement(children[i]);
+    }
+
+    // translate element itself if necessary
+    if (element.dataset.l10nId) {
+      translateElement(element);
+    }
+  }
+
+  // Public API
+  document.mozL10n = {
+    // get a localized string
+    get: translateString,
+
+    // get the document language
+    getLanguage() {
+      return gLanguage;
+    },
+
+    // get the direction (ltr|rtl) of the current language
+    getDirection() {
+      // http://www.w3.org/International/questions/qa-scripts
+      // Arabic, Hebrew, Farsi, Pashto, Urdu
+      var rtlList = ["ar", "he", "fa", "ps", "ur"];
+
+      // use the short language code for "full" codes like 'ar-sa' (issue 5440)
+      var shortCode = gLanguage.split("-")[0];
+
+      return rtlList.includes(shortCode) ? "rtl" : "ltr";
+    },
+
+    getReadyState() {
+      return gReadyState;
+    },
+
+    setExternalLocalizerServices(externalLocalizerServices) {
+      gExternalLocalizerServices = externalLocalizerServices;
+      gLanguage = gExternalLocalizerServices.getLocale();
+      gReadyState = "complete";
+    },
+
+    // translate an element or document fragment
+    translate: translateFragment,
+  };
+})(this);

external/builder/babel-plugin-pdfjs-preprocessor.mjs

@@ -1,253 +0,0 @@
-import { types as t, transformSync } from "@babel/core";
-import fs from "fs";
-import { join as joinPaths } from "path";
-import vm from "vm";
-
-const PDFJS_PREPROCESSOR_NAME = "PDFJSDev";
-const ROOT_PREFIX = "$ROOT/";
-
-function isPDFJSPreprocessor(obj) {
-  return obj.type === "Identifier" && obj.name === PDFJS_PREPROCESSOR_NAME;
-}
-
-function evalWithDefines(code, defines) {
-  if (!code || !code.trim()) {
-    throw new Error("No JavaScript expression given");
-  }
-  return vm.runInNewContext(code, defines, { displayErrors: false });
-}
-
-function handlePreprocessorAction(ctx, actionName, args, path) {
-  try {
-    const arg = args[0];
-    switch (actionName) {
-      case "test":
-        if (!t.isStringLiteral(arg)) {
-          throw new Error("No code for testing is given");
-        }
-        return !!evalWithDefines(arg.value, ctx.defines);
-      case "eval":
-        if (!t.isStringLiteral(arg)) {
-          throw new Error("No code for eval is given");
-        }
-        const result = evalWithDefines(arg.value, ctx.defines);
-        if (
-          typeof result === "boolean" ||
-          typeof result === "string" ||
-          typeof result === "number" ||
-          typeof result === "object"
-        ) {
-          return result;
-        }
-        break;
-      case "json":
-        if (!t.isStringLiteral(arg)) {
-          throw new Error("Path to JSON is not provided");
-        }
-        let jsonPath = arg.value;
-        if (jsonPath.startsWith(ROOT_PREFIX)) {
-          jsonPath = joinPaths(
-            ctx.rootPath,
-            jsonPath.substring(ROOT_PREFIX.length)
-          );
-        }
-        return JSON.parse(fs.readFileSync(jsonPath, "utf8"));
-    }
-    throw new Error("Unsupported action");
-  } catch (e) {
-    throw path.buildCodeFrameError(
-      "Could not process " +
-        PDFJS_PREPROCESSOR_NAME +
-        "." +
-        actionName +
-        ": " +
-        e.message
-    );
-  }
-}
-
-function babelPluginPDFJSPreprocessor(babel, ctx) {
-  return {
-    name: "babel-plugin-pdfjs-preprocessor",
-    manipulateOptions({ parserOpts }) {
-      parserOpts.attachComment = false;
-    },
-    visitor: {
-      "ExportNamedDeclaration|ImportDeclaration": ({ node }) => {
-        if (node.source && ctx.map?.[node.source.value]) {
-          node.source.value = ctx.map[node.source.value];
-        }
-      },
-      "IfStatement|ConditionalExpression": {
-        exit(path) {
-          const { node } = path;
-          if (t.isBooleanLiteral(node.test)) {
-            // if (true) stmt1; => stmt1
-            // if (false) stmt1; else stmt2; => stmt2
-            if (node.test.value === true) {
-              path.replaceWith(node.consequent);
-            } else if (node.alternate) {
-              path.replaceWith(node.alternate);
-            } else {
-              path.remove(node);
-            }
-          }
-        },
-      },
-      UnaryExpression: {
-        exit(path) {
-          const { node } = path;
-          if (
-            node.operator === "typeof" &&
-            isPDFJSPreprocessor(node.argument)
-          ) {
-            // typeof PDFJSDev => 'object'
-            path.replaceWith(t.stringLiteral("object"));
-            return;
-          }
-          if (node.operator === "!" && t.isBooleanLiteral(node.argument)) {
-            // !true => false,  !false => true
-            path.replaceWith(t.booleanLiteral(!node.argument.value));
-          }
-        },
-      },
-      LogicalExpression: {
-        exit(path) {
-          const { node } = path;
-          if (!t.isBooleanLiteral(node.left)) {
-            return;
-          }
-
-          switch (node.operator) {
-            case "&&":
-              // true && expr => expr
-              // false && expr => false
-              path.replaceWith(
-                node.left.value === true ? node.right : node.left
-              );
-              break;
-            case "||":
-              // true || expr => true
-              // false || expr => expr
-              path.replaceWith(
-                node.left.value === true ? node.left : node.right
-              );
-              break;
-          }
-        },
-      },
-      BinaryExpression: {
-        exit(path) {
-          const { node } = path;
-          switch (node.operator) {
-            case "==":
-            case "===":
-            case "!=":
-            case "!==":
-              if (t.isLiteral(node.left) && t.isLiteral(node.right)) {
-                // folding == and != check that can be statically evaluated
-                const { confident, value } = path.evaluate();
-                if (confident) {
-                  path.replaceWith(t.booleanLiteral(value));
-                }
-              }
-          }
-        },
-      },
-      CallExpression(path) {
-        const { node } = path;
-        if (
-          t.isMemberExpression(node.callee) &&
-          isPDFJSPreprocessor(node.callee.object) &&
-          t.isIdentifier(node.callee.property) &&
-          !node.callee.computed
-        ) {
-          // PDFJSDev.xxxx(arg1, arg2, ...) => transform
-          const action = node.callee.property.name;
-          const result = handlePreprocessorAction(
-            ctx,
-            action,
-            node.arguments,
-            path
-          );
-          path.replaceWith(t.inherits(t.valueToNode(result), path.node));
-        }
-
-        if (t.isIdentifier(node.callee, { name: "__non_webpack_import__" })) {
-          if (node.arguments.length !== 1) {
-            throw new Error("Invalid `__non_webpack_import__` usage.");
-          }
-          // Replace it with a standard `import`-call and
-          // ensure that Webpack will leave it alone.
-          const source = node.arguments[0];
-          source.leadingComments = [
-            {
-              type: "CommentBlock",
-              value: "webpackIgnore: true",
-            },
-          ];
-          path.replaceWith(t.importExpression(source));
-        }
-      },
-      BlockStatement: {
-        // Visit node in post-order so that recursive flattening
-        // of blocks works correctly.
-        exit(path) {
-          const { node } = path;
-
-          let subExpressionIndex = 0;
-          while (subExpressionIndex < node.body.length) {
-            switch (node.body[subExpressionIndex].type) {
-              case "EmptyStatement":
-                // Removing empty statements from the blocks.
-                node.body.splice(subExpressionIndex, 1);
-                continue;
-              case "BlockStatement":
-                // Block statements inside a block are flattened
-                // into the parent one.
-                const subChildren = node.body[subExpressionIndex].body;
-                node.body.splice(subExpressionIndex, 1, ...subChildren);
-                subExpressionIndex += Math.max(subChildren.length - 1, 0);
-                continue;
-              case "ReturnStatement":
-              case "ThrowStatement":
-                // Removing dead code after return or throw.
-                node.body.splice(
-                  subExpressionIndex + 1,
-                  node.body.length - subExpressionIndex - 1
-                );
-                break;
-            }
-            subExpressionIndex++;
-          }
-        },
-      },
-      Function: {
-        exit(path) {
-          if (!t.isBlockStatement(path.node.body)) {
-            // Arrow function with expression body
-            return;
-          }
-
-          const { body } = path.node.body;
-          if (
-            body.length > 0 &&
-            t.isReturnStatement(body.at(-1), { argument: null })
-          ) {
-            // Function body ends with return without arg -- removing it.
-            body.pop();
-          }
-        },
-      },
-    },
-  };
-}
-
-function preprocessPDFJSCode(ctx, content) {
-  return transformSync(content, {
-    configFile: false,
-    plugins: [[babelPluginPDFJSPreprocessor, ctx]],
-  }).code;
-}
-
-export { babelPluginPDFJSPreprocessor, preprocessPDFJSCode };

external/builder/builder.js

@@ -1,8 +1,8 @@
-import fs from "fs";
+"use strict";
-import path from "path";
-import vm from "vm";
 
-const AllWhitespaceRegexp = /^\s+$/g;
+var fs = require("fs"),
+  path = require("path"),
+  vm = require("vm");
 
 /**
  * A simple preprocessor that is based on the Firefox preprocessor
@@ -33,55 +33,22 @@ const AllWhitespaceRegexp = /^\s+$/g;
  * //#endif
  */
 function preprocess(inFilename, outFilename, defines) {
-  let lineNumber = 0;
-  function loc() {
-    return fs.realpathSync(inFilename) + ":" + lineNumber;
-  }
-
-  function expandCssImports(content, baseUrl) {
-    return content.replaceAll(
-      /^\s*@import\s+url\(([^)]+)\);\s*$/gm,
-      function (all, url) {
-        if (defines.GECKOVIEW) {
-          switch (url) {
-            case "annotation_editor_layer_builder.css":
-              return "";
-          }
-        }
-        const file = path.join(path.dirname(baseUrl), url);
-        const imported = fs.readFileSync(file, "utf8").toString();
-        return expandCssImports(imported, file);
-      }
-    );
-  }
-
   // TODO make this really read line by line.
-  let content = fs.readFileSync(inFilename, "utf8").toString();
+  var lines = fs.readFileSync(inFilename).toString().split("\n");
-  // Handle CSS-imports first, when necessary.
+  var totalLines = lines.length;
-  if (/\.css$/i.test(inFilename)) {
+  var out = "";
-    content = expandCssImports(content, inFilename);
+  var i = 0;
-  }
-  const lines = content.split("\n"),
-    totalLines = lines.length;
-  const out = [];
-  let i = 0;
   function readLine() {
     if (i < totalLines) {
       return lines[i++];
     }
     return null;
   }
-  const writeLine =
+  var writeLine =
     typeof outFilename === "function"
       ? outFilename
       : function (line) {
-          if (!line || AllWhitespaceRegexp.test(line)) {
+          out += line + "\n";
-            const prevLine = out.at(-1);
-            if (!prevLine || AllWhitespaceRegexp.test(prevLine)) {
-              return; // Avoid adding consecutive blank lines.
-            }
-          }
-          out.push(line);
         };
   function evaluateCondition(code) {
     if (!code || !code.trim()) {
@@ -103,10 +70,10 @@ function preprocess(inFilename, outFilename, defines) {
     }
   }
   function include(file) {
-    const realPath = fs.realpathSync(inFilename);
+    var realPath = fs.realpathSync(inFilename);
-    const dir = path.dirname(realPath);
+    var dir = path.dirname(realPath);
     try {
-      let fullpath;
+      var fullpath;
       if (file.indexOf("$ROOT/") === 0) {
         fullpath = path.join(
           __dirname,
@@ -125,7 +92,7 @@ function preprocess(inFilename, outFilename, defines) {
     }
   }
   function expand(line) {
-    line = line.replaceAll(/__[\w]+__/g, function (variable) {
+    line = line.replace(/__[\w]+__/g, function (variable) {
       variable = variable.substring(2, variable.length - 2);
       if (variable in defines) {
         return defines[variable];
@@ -136,26 +103,28 @@ function preprocess(inFilename, outFilename, defines) {
   }
 
   // not inside if or else (process lines)
-  const STATE_NONE = 0;
+  var STATE_NONE = 0;
   // inside if, condition false (ignore until #else or #endif)
-  const STATE_IF_FALSE = 1;
+  var STATE_IF_FALSE = 1;
   // inside else, #if was false, so #else is true (process lines until #endif)
-  const STATE_ELSE_TRUE = 2;
+  var STATE_ELSE_TRUE = 2;
   // inside if, condition true (process lines until #else or #endif)
-  const STATE_IF_TRUE = 3;
+  var STATE_IF_TRUE = 3;
   // inside else or elif, #if/#elif was true, so following #else or #elif is
   // false (ignore lines until #endif)
-  const STATE_ELSE_FALSE = 4;
+  var STATE_ELSE_FALSE = 4;
-
-  let line;
-  let state = STATE_NONE;
-  const stack = [];
-  const control =
-    /^(?:\/\/|\s*\/\*|<!--)\s*#(if|elif|else|endif|expand|include|error)\b(?:\s+(.*?)(?:\*\/|-->)?$)?/;
 
+  var line;
+  var state = STATE_NONE;
+  var stack = [];
+  var control = /^(?:\/\/|<!--)\s*#(if|elif|else|endif|expand|include|error)\b(?:\s+(.*?)(?:-->)?$)?/;
+  var lineNumber = 0;
+  var loc = function () {
+    return fs.realpathSync(inFilename) + ":" + lineNumber;
+  };
   while ((line = readLine()) !== null) {
     ++lineNumber;
-    const m = control.exec(line);
+    var m = control.exec(line);
     if (m) {
       switch (m[1]) {
         case "if":
@@ -204,19 +173,16 @@ function preprocess(inFilename, outFilename, defines) {
           }
           break;
       }
-    } else if (state === STATE_NONE) {
+    } else {
+      if (state === STATE_NONE) {
         writeLine(line);
       } else if (
         (state === STATE_IF_TRUE || state === STATE_ELSE_TRUE) &&
         !stack.includes(STATE_IF_FALSE) &&
         !stack.includes(STATE_ELSE_FALSE)
       ) {
-      writeLine(
+        writeLine(line.replace(/^\/\/|^<!--/g, "  ").replace(/-->$/g, ""));
-        line
+      }
-          .replaceAll(/^\/\/|^<!--/g, "  ")
-          .replaceAll(/(^\s*)\/\*/g, "$1  ")
-          .replaceAll(/\*\/$|-->$/g, "")
-      );
     }
   }
   if (state !== STATE_NONE || stack.length !== 0) {
@@ -225,8 +191,99 @@ function preprocess(inFilename, outFilename, defines) {
     );
   }
   if (typeof outFilename !== "function") {
-    fs.writeFileSync(outFilename, out.join("\n"));
+    fs.writeFileSync(outFilename, out);
   }
 }
+exports.preprocess = preprocess;
+
+function preprocessCSS(mode, source, destination) {
+  function hasPrefixedMozcentral(line) {
+    return /(^|\W)-(ms|o|webkit)-\w/.test(line);
+  }
 
-export { preprocess };
+  function expandImports(content, baseUrl) {
+    return content.replace(
+      /^\s*@import\s+url\(([^)]+)\);\s*$/gm,
+      function (all, url) {
+        var file = path.join(path.dirname(baseUrl), url);
+        var imported = fs.readFileSync(file, "utf8").toString();
+        return expandImports(imported, file);
+      }
+    );
+  }
+
+  function removePrefixed(content, hasPrefixedFilter) {
+    var lines = content.split(/\r?\n/g);
+    var i = 0;
+    while (i < lines.length) {
+      var line = lines[i];
+      if (!hasPrefixedFilter(line)) {
+        i++;
+        continue;
+      }
+      if (/\{\s*$/.test(line)) {
+        var bracketLevel = 1;
+        var j = i + 1;
+        while (j < lines.length && bracketLevel > 0) {
+          var checkBracket = /([{}])\s*$/.exec(lines[j]);
+          if (checkBracket) {
+            if (checkBracket[1] === "{") {
+              bracketLevel++;
+            } else if (!lines[j].includes("{")) {
+              bracketLevel--;
+            }
+          }
+          j++;
+        }
+        lines.splice(i, j - i);
+      } else if (/[};]\s*$/.test(line)) {
+        lines.splice(i, 1);
+      } else {
+        // multiline? skipping until next directive or bracket
+        do {
+          lines.splice(i, 1);
+        } while (
+          i < lines.length &&
+          !/\}\s*$/.test(lines[i]) &&
+          !lines[i].includes(":")
+        );
+        if (i < lines.length && /\S\s*}\s*$/.test(lines[i])) {
+          lines[i] = lines[i].substring(lines[i].indexOf("}"));
+        }
+      }
+      // collapse whitespaces
+      while (lines[i] === "" && lines[i - 1] === "") {
+        lines.splice(i, 1);
+      }
+    }
+    return lines.join("\n");
+  }
+
+  if (!mode) {
+    throw new Error("Invalid CSS preprocessor mode");
+  }
+
+  var content = fs.readFileSync(source, "utf8").toString();
+  content = expandImports(content, source);
+  if (mode === "mozcentral") {
+    content = removePrefixed(content, hasPrefixedMozcentral);
+  }
+  fs.writeFileSync(destination, content);
+}
+exports.preprocessCSS = preprocessCSS;
+
+/**
+ * Merge two defines arrays. Values in the second param will override values in
+ * the first.
+ */
+function merge(defaults, defines) {
+  var ret = {};
+  for (var key in defaults) {
+    ret[key] = defaults[key];
+  }
+  for (key in defines) {
+    ret[key] = defines[key];
+  }
+  return ret;
+}
+exports.merge = merge;

external/builder/fixtures/css-comment-expected.css

@@ -1,5 +0,0 @@
-/* Comment here... */
-  div {
-    margin: 0;
-    padding: 0;
-  }

external/builder/fixtures/css-comment.css

@@ -1,7 +0,0 @@
-/* Comment here... */
-/*#if TRUE*/
-/*div {*/
-/*  margin: 0;*/
-  /*padding: 0;*/
-/*}*/
-/*#endif*/

external/builder/fixtures/if-nested-expected.css

@@ -1,3 +0,0 @@
-div {
-  margin: 0;
-}

external/builder/fixtures/if-nested.css

@@ -1,14 +0,0 @@
-/*#if TRUE*/
-div {
-  margin: 0;
-  /*#if FALSE*/
-  padding: 0;
-  /*#endif*/
-}
-/*#endif*/
-
-/*#if FALSE*/
-p {
-  margin: 0;
-}
-/*#endif*/

external/builder/fixtures_esprima/constants-expected.js

@@ -10,6 +10,6 @@ var i = true;
 var j = false;
 var k = false;
 var l = true;
-var m = false;
+var m = '1' === true;
 var n = false;
 var o = true;

external/builder/fixtures_esprima/deadcode-expected.js

@@ -1,4 +1,5 @@
-function f1() {}
+function f1() {
+}
 function f2() {
  return 1;
 }
@@ -9,13 +10,4 @@ function f3() {
 function f4() {
  var i = 0;
 }
-var obj = {
+
-  method1() {},
-  method2() {}
-};
-class C {
-  method1() {}
-  method2() {}
-}
-var arrow1 = () => {};
-var arrow2 = () => {};

external/builder/fixtures_esprima/deadcode.js

@@ -23,15 +23,3 @@ function f4() {
   var j = 0;
 }
 
-var obj = {
-  method1() { return; var i = 0; },
-  method2() { return; },
-};
-
-class C {
-  method1() { return; var i = 0; }
-  method2() { return; }
-}
-
-var arrow1 = () => { return; var i = 0; };
-var arrow2 = () => { return; };

external/builder/fixtures_esprima/evals-expected.js

@@ -3,19 +3,11 @@ var b = true;
 var c = true;
 var d = false;
 var e = true;
-var f = "text";
+var f = 'text';
 var g = {
-  obj: {
+ "obj": { "i": 1 },
-    i: 1
+ "j": 2
-  },
-  j: 2
-};
-var h = {
-  test: "test"
 };
+var h = { 'test': 'test' };
 var i = '0';
-var j = {
+var j = { "i": 1 };
-  i: 1
-};
-var k = false;
-var l = true;

external/builder/fixtures_esprima/evals.js

@@ -8,5 +8,3 @@ var g = PDFJSDev.eval('OBJ');
 var h = PDFJSDev.json('$ROOT/external/builder/fixtures_esprima/evals.json');
 var i = typeof PDFJSDev === 'undefined' ? PDFJSDev.eval('FALSE') : '0';
 var j = typeof PDFJSDev !== 'undefined' ? PDFJSDev.eval('OBJ.obj') : '0';
-var k = !PDFJSDev.test('TRUE');
-var l = !PDFJSDev.test('FALSE');

external/builder/fixtures_esprima/evals.json

@@ -1 +1 @@
-{ "test": "test" }
+{ 'test': 'test' }

external/builder/fixtures_esprima/ifs-expected.js

@@ -7,12 +7,11 @@ if ('test') {
 {
  "1";
 }
+;
 {
  "2";
 }
+;
 if ('1') {
  "1";
 }
-function f1() {
-  "1";
-}

external/builder/fixtures_esprima/ifs.js

@@ -23,12 +23,3 @@ if (true && false) {
 if (true && false || '1') {
   "1";
 }
-
-function f1() {
-  if (true) {
-    "1";
-  }
-  if (false) {
-    "2";
-  }
-}

external/builder/fixtures_esprima/importalias-expected.js

@@ -1,4 +1,7 @@
-import { Test } from "import-name";
+import { Test } from 'import-name';
 import { Test2 } from './non-alias';
-export { Test3 } from "import-name";
+export {
-await import( /*webpackIgnore: true*/"./non-alias");
+ Test3
+} from 'import-name';
+var Imp = require('import-name');
+var Imp2 = require('./non-alias');

external/builder/fixtures_esprima/importalias.js

@@ -1,4 +1,5 @@
 import { Test } from 'import-alias';
 import { Test2 } from './non-alias';
 export { Test3 } from 'import-alias';
-await __non_webpack_import__("./non-alias");
+var Imp = require('import-alias');
+var Imp2 = require('./non-alias');

external/builder/preprocessor2.js

@@ -0,0 +1,348 @@
+"use strict";
+
+var acorn = require("acorn");
+var escodegen = require("escodegen");
+var vm = require("vm");
+var fs = require("fs");
+var path = require("path");
+
+var PDFJS_PREPROCESSOR_NAME = "PDFJSDev";
+var ROOT_PREFIX = "$ROOT/";
+const ACORN_ECMA_VERSION = 2021;
+
+function isLiteral(obj, value) {
+  return obj.type === "Literal" && obj.value === value;
+}
+
+function isPDFJSPreprocessor(obj) {
+  return obj.type === "Identifier" && obj.name === PDFJS_PREPROCESSOR_NAME;
+}
+
+function evalWithDefines(code, defines, loc) {
+  if (!code || !code.trim()) {
+    throw new Error("No JavaScript expression given");
+  }
+  return vm.runInNewContext(code, defines, { displayErrors: false });
+}
+
+function handlePreprocessorAction(ctx, actionName, args, loc) {
+  try {
+    var arg;
+    switch (actionName) {
+      case "test":
+        arg = args[0];
+        if (!arg || arg.type !== "Literal" || typeof arg.value !== "string") {
+          throw new Error("No code for testing is given");
+        }
+        var isTrue = !!evalWithDefines(arg.value, ctx.defines);
+        return { type: "Literal", value: isTrue, loc };
+      case "eval":
+        arg = args[0];
+        if (!arg || arg.type !== "Literal" || typeof arg.value !== "string") {
+          throw new Error("No code for eval is given");
+        }
+        var result = evalWithDefines(arg.value, ctx.defines);
+        if (
+          typeof result === "boolean" ||
+          typeof result === "string" ||
+          typeof result === "number"
+        ) {
+          return { type: "Literal", value: result, loc };
+        }
+        if (typeof result === "object") {
+          const parsedObj = acorn.parse("(" + JSON.stringify(result) + ")", {
+            ecmaVersion: ACORN_ECMA_VERSION,
+          });
+          parsedObj.body[0].expression.loc = loc;
+          return parsedObj.body[0].expression;
+        }
+        break;
+      case "json":
+        arg = args[0];
+        if (!arg || arg.type !== "Literal" || typeof arg.value !== "string") {
+          throw new Error("Path to JSON is not provided");
+        }
+        var jsonPath = arg.value;
+        if (jsonPath.indexOf(ROOT_PREFIX) === 0) {
+          jsonPath = path.join(
+            ctx.rootPath,
+            jsonPath.substring(ROOT_PREFIX.length)
+          );
+        }
+        var jsonContent = fs.readFileSync(jsonPath).toString();
+        const parsedJSON = acorn.parse("(" + jsonContent + ")", {
+          ecmaVersion: ACORN_ECMA_VERSION,
+        });
+        parsedJSON.body[0].expression.loc = loc;
+        return parsedJSON.body[0].expression;
+    }
+    throw new Error("Unsupported action");
+  } catch (e) {
+    throw new Error(
+      "Could not process " +
+        PDFJS_PREPROCESSOR_NAME +
+        "." +
+        actionName +
+        " at " +
+        JSON.stringify(loc) +
+        "\n" +
+        e.name +
+        ": " +
+        e.message
+    );
+  }
+}
+
+function postprocessNode(ctx, node) {
+  switch (node.type) {
+    case "ExportNamedDeclaration":
+    case "ImportDeclaration":
+      if (
+        node.source &&
+        node.source.type === "Literal" &&
+        ctx.map &&
+        ctx.map[node.source.value]
+      ) {
+        var newValue = ctx.map[node.source.value];
+        node.source.value = node.source.raw = newValue;
+      }
+      break;
+    case "IfStatement":
+      if (isLiteral(node.test, true)) {
+        // if (true) stmt1; => stmt1
+        return node.consequent;
+      } else if (isLiteral(node.test, false)) {
+        // if (false) stmt1; else stmt2; => stmt2
+        return node.alternate || { type: "EmptyStatement", loc: node.loc };
+      }
+      break;
+    case "ConditionalExpression":
+      if (isLiteral(node.test, true)) {
+        // true ? stmt1 : stmt2 => stmt1
+        return node.consequent;
+      } else if (isLiteral(node.test, false)) {
+        // false ? stmt1 : stmt2 => stmt2
+        return node.alternate;
+      }
+      break;
+    case "UnaryExpression":
+      if (node.operator === "typeof" && isPDFJSPreprocessor(node.argument)) {
+        // typeof PDFJSDev => 'object'
+        return { type: "Literal", value: "object", loc: node.loc };
+      }
+      if (
+        node.operator === "!" &&
+        node.argument.type === "Literal" &&
+        typeof node.argument.value === "boolean"
+      ) {
+        // !true => false,  !false => true
+        return { type: "Literal", value: !node.argument.value, loc: node.loc };
+      }
+      break;
+    case "LogicalExpression":
+      switch (node.operator) {
+        case "&&":
+          if (isLiteral(node.left, true)) {
+            return node.right;
+          }
+          if (isLiteral(node.left, false)) {
+            return node.left;
+          }
+          break;
+        case "||":
+          if (isLiteral(node.left, true)) {
+            return node.left;
+          }
+          if (isLiteral(node.left, false)) {
+            return node.right;
+          }
+          break;
+      }
+      break;
+    case "BinaryExpression":
+      switch (node.operator) {
+        case "==":
+        case "===":
+        case "!=":
+        case "!==":
+          if (
+            node.left.type === "Literal" &&
+            node.right.type === "Literal" &&
+            typeof node.left.value === typeof node.right.value
+          ) {
+            // folding two literals == and != check
+            switch (typeof node.left.value) {
+              case "string":
+              case "boolean":
+              case "number":
+                var equal = node.left.value === node.right.value;
+                return {
+                  type: "Literal",
+                  value: (node.operator[0] === "=") === equal,
+                  loc: node.loc,
+                };
+            }
+          }
+          break;
+      }
+      break;
+    case "CallExpression":
+      if (
+        node.callee.type === "MemberExpression" &&
+        isPDFJSPreprocessor(node.callee.object) &&
+        node.callee.property.type === "Identifier"
+      ) {
+        // PDFJSDev.xxxx(arg1, arg2, ...) => transform
+        var action = node.callee.property.name;
+        return handlePreprocessorAction(ctx, action, node.arguments, node.loc);
+      }
+      // require('string')
+      if (
+        node.callee.type === "Identifier" &&
+        node.callee.name === "require" &&
+        node.arguments.length === 1 &&
+        node.arguments[0].type === "Literal" &&
+        ctx.map &&
+        ctx.map[node.arguments[0].value]
+      ) {
+        var requireName = node.arguments[0];
+        requireName.value = requireName.raw = ctx.map[requireName.value];
+      }
+      break;
+    case "BlockStatement":
+      var subExpressionIndex = 0;
+      while (subExpressionIndex < node.body.length) {
+        switch (node.body[subExpressionIndex].type) {
+          case "EmptyStatement":
+            // Removing empty statements from the blocks.
+            node.body.splice(subExpressionIndex, 1);
+            continue;
+          case "BlockStatement":
+            // Block statements inside a block are moved to the parent one.
+            var subChildren = node.body[subExpressionIndex].body;
+            Array.prototype.splice.apply(
+              node.body,
+              [subExpressionIndex, 1].concat(subChildren)
+            );
+            subExpressionIndex += Math.max(subChildren.length - 1, 0);
+            continue;
+          case "ReturnStatement":
+          case "ThrowStatement":
+            // Removing dead code after return or throw.
+            node.body.splice(
+              subExpressionIndex + 1,
+              node.body.length - subExpressionIndex - 1
+            );
+            break;
+        }
+        subExpressionIndex++;
+      }
+      break;
+    case "FunctionDeclaration":
+    case "FunctionExpression":
+      var block = node.body;
+      if (
+        block.body.length > 0 &&
+        block.body[block.body.length - 1].type === "ReturnStatement" &&
+        !block.body[block.body.length - 1].argument
+      ) {
+        // Function body ends with return without arg -- removing it.
+        block.body.pop();
+      }
+      break;
+  }
+  return node;
+}
+
+function fixComments(ctx, node) {
+  if (!ctx.saveComments) {
+    return;
+  }
+  // Fixes double comments in the escodegen output.
+  delete node.trailingComments;
+  // Removes ESLint and other service comments.
+  if (node.leadingComments) {
+    var CopyrightRegExp = /\bcopyright\b/i;
+    var BlockCommentRegExp = /^\s*(globals|eslint|falls through)\b/;
+    var LineCommentRegExp = /^\s*eslint\b/;
+
+    var i = 0;
+    while (i < node.leadingComments.length) {
+      var type = node.leadingComments[i].type;
+      var value = node.leadingComments[i].value;
+
+      if (ctx.saveComments === "copyright") {
+        // Remove all comments, except Copyright notices and License headers.
+        if (!(type === "Block" && CopyrightRegExp.test(value))) {
+          node.leadingComments.splice(i, 1);
+          continue;
+        }
+      } else if (
+        (type === "Block" && BlockCommentRegExp.test(value)) ||
+        (type === "Line" && LineCommentRegExp.test(value))
+      ) {
+        node.leadingComments.splice(i, 1);
+        continue;
+      }
+      i++;
+    }
+  }
+}
+
+function traverseTree(ctx, node) {
+  // generic node processing
+  for (var i in node) {
+    var child = node[i];
+    if (typeof child === "object" && child !== null && child.type) {
+      const result = traverseTree(ctx, child);
+      if (result !== child) {
+        node[i] = result;
+      }
+    } else if (Array.isArray(child)) {
+      child.forEach(function (childItem, index) {
+        if (
+          typeof childItem === "object" &&
+          childItem !== null &&
+          childItem.type
+        ) {
+          const result = traverseTree(ctx, childItem);
+          if (result !== childItem) {
+            child[index] = result;
+          }
+        }
+      });
+    }
+  }
+
+  node = postprocessNode(ctx, node) || node;
+
+  fixComments(ctx, node);
+  return node;
+}
+
+function preprocessPDFJSCode(ctx, code) {
+  var format = ctx.format || {
+    indent: {
+      style: " ",
+    },
+  };
+  var parseOptions = {
+    ecmaVersion: ACORN_ECMA_VERSION,
+    locations: true,
+    sourceFile: ctx.sourceFile,
+    sourceType: "module",
+  };
+  var codegenOptions = {
+    format,
+    parse(input) {
+      return acorn.parse(input, { ecmaVersion: ACORN_ECMA_VERSION });
+    },
+    sourceMap: ctx.sourceMap,
+    sourceMapWithCode: ctx.sourceMap,
+  };
+  var syntax = acorn.parse(code, parseOptions);
+  traverseTree(ctx, syntax);
+  return escodegen.generate(syntax, codegenOptions);
+}
+
+exports.preprocessPDFJSCode = preprocessPDFJSCode;

external/builder/test-fixtures.js

@@ -1,14 +1,13 @@
-import * as builder from "./builder.mjs";
+"use strict";
-import { fileURLToPath } from "url";
-import fs from "fs";
-import path from "path";
 
-const __dirname = path.dirname(fileURLToPath(import.meta.url));
+var builder = require("./builder");
+var fs = require("fs");
+var path = require("path");
 
-let errors = 0;
+var errors = 0;
 
-const baseDir = path.join(__dirname, "fixtures");
+var baseDir = path.join(__dirname, "fixtures");
-const files = fs
+var files = fs
   .readdirSync(baseDir)
   .filter(function (name) {
     return /-expected\./.test(name);
@@ -17,37 +16,31 @@ const files = fs
     return path.join(baseDir, name);
   });
 files.forEach(function (expectationFilename) {
-  const inFilename = expectationFilename.replace("-expected", "");
+  var inFilename = expectationFilename.replace("-expected", "");
-  const expectation = fs
+  var expectation = fs
     .readFileSync(expectationFilename)
     .toString()
     .trim()
-    .replaceAll("__filename", fs.realpathSync(inFilename));
+    .replace(/__filename/g, fs.realpathSync(inFilename));
-  const outLines = [];
+  var outLines = [];
 
-  const outFilename = function (line) {
+  var outFilename = function (line) {
     outLines.push(line);
   };
-  const defines = {
+  var defines = {
     TRUE: true,
     FALSE: false,
   };
-  let out;
+  var out;
   try {
     builder.preprocess(inFilename, outFilename, defines);
     out = outLines.join("\n").trim();
   } catch (e) {
-    out = ("Error: " + e.message).replaceAll(/^/gm, "//");
+    out = ("Error: " + e.message).replace(/^/gm, "//");
   }
   if (out !== expectation) {
     errors++;
 
-    // Allow regenerating the expected output using
-    //   OVERWRITE=true node ./external/builder/test-fixtures.mjs
-    if (process.env.OVERWRITE) {
-      fs.writeFileSync(expectationFilename, out + "\n");
-    }
-
     console.log("Assertion failed for " + inFilename);
     console.log("--------------------------------------------------");
     console.log("EXPECTED:");