1355 changed files with 114206 additions and 347017 deletions
--- a/.editorconfig
+++ b/.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
--- a/.eslintignore
+++ b/.eslintignore
@ -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
 *~/
--- a/.eslintrc
+++ b/.eslintrc
@ -1,84 +1,44 @@
 {
  "parserOptions": {
-    "ecmaVersion": 2022,
+    "ecmaVersion": 8,
    "sourceType": "module",
  },

  "plugins": [
    "import",
-    "json",
    "mozilla",
    "no-unsanitized",
-    "sort-exports",
    "unicorn",
  ],

  "extends": [
-    "plugin:json/recommended",
    "plugin:prettier/recommended"
  ],

  "env": {
    "browser": true,
-    "es2022": true,
+    "es6": true,
    "worker": true,
+    "amd": true,
  },

  "globals": {
-    "PDFJSDev": "readonly",
-    "__non_webpack_import__": "readonly",
+    "globalThis": false,
+    "PDFJSDev": false,
+    "exports": false,
+    "SystemJS": false,
  },

  "rules": {
    // Plugins
-    "import/export": "error",
-    "import/exports-last": "error",
    "import/extensions": ["error", "always", { "ignorePackages": true, }],
-    "import/first": "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"],
-    }],
+    "import/no-unresolved": "error",
    "mozilla/avoid-removeChild": "error",
    "mozilla/use-includes-instead-of-indexOf": "error",
    "no-unsanitized/method": "error",
    "no-unsanitized/property": "error",
-    "sort-exports/sort-exports": ["error", {
-      "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"],
+    "unicorn/no-array-instanceof": "error",
+    "unicorn/prefer-starts-ends-with": "error",

    // Possible errors
    "for-direction": "error",
@ -86,33 +46,26 @@
    "no-async-promise-executor": "error",
    "no-cond-assign": ["error", "except-parens"],
    "no-constant-condition": ["error", { "checkLoops": false, }],
-    "no-debugger": "error",
    "no-dupe-args": "error",
    "no-dupe-else-if": "error",
    "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, }],
+    "use-isnan": "error",
    "valid-typeof": ["error", { "requireStringLiterals": true, }],

    // Best Practices
@ -122,11 +75,7 @@
    }],
    "consistent-return": "error",
    "curly": ["error", "all"],
-    "default-case-last": "error",
-    "dot-notation": "error",
    "eqeqeq": ["error", "always"],
-    "grouped-accessor-pairs": ["error", "getBeforeSet"],
-    "no-alert": "error",
    "no-caller": "error",
    "no-else-return": "error",
    "no-empty-pattern": "error",
@ -140,12 +89,10 @@
    "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",
@ -158,10 +105,8 @@
    "no-useless-call": "error",
    "no-useless-catch": "error",
    "no-useless-concat": "error",
-    "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,
@ -171,21 +116,20 @@
    "strict": ["off", "global"],

    // Variables
+    "no-catch-shadow": "error",
    "no-delete-var": "error",
    "no-label-var": "error",
-    "no-shadow": "error",
    "no-shadow-restricted-names": "error",
+    "no-shadow": "off",
    "no-undef-init": "error",
    "no-undef": ["error", { "typeof": true, }],
    "no-unused-vars": ["error", {
-      "vars": "all",
+      "vars": "local",
      "args": "none",
    }],
-    "no-use-before-define": ["error", {
-      "functions": false,
-      "classes": false,
-      "variables": false,
-    }],
+
+    // Node.js and CommonJS
+    "no-buffer-constructor": "error",

    // Stylistic Issues
    "lines-between-class-members": ["error", "always"],
@ -200,26 +144,6 @@
    "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 +158,6 @@
      },
    ],
    "no-unneeded-ternary": "error",
-    "operator-assignment": "error",
    "prefer-exponentiation-operator": "error",
    "spaced-comment": ["error", "always", {
      "block": {
@ -243,9 +166,9 @@
    }],

    // 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 +176,11 @@
    "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,
    }],
--- a/.git-blame-ignore-revs
+++ b/.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
--- a/.gitattributes
+++ b/.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
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@ -1 +0,0 @@
-l10n/en-US/*.ftl @mozilla/pdfjs-l10n
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@ -1,8 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    labels:
-      - "dependencies"
--- a/.github/fluent_linter_config.yml
+++ b/.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: []
--- a/.github/requirements.txt
+++ b/.github/requirements.txt
@ -1 +0,0 @@
-moz-fluent-linter==0.4.*
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -1,37 +0,0 @@
-name: CI
-on: [push, pull_request]
-permissions:
-  contents: read
-
-jobs:
-  test:
-    name: Test
-    runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        node-version: [18, lts/*, latest]
-
-    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 external tests
-        run: gulp externaltest
-
-      - name: Run CLI unit tests
-        run: gulp unittestcli
--- a/.github/workflows/codeql.yml
+++ b/.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
--- a/.github/workflows/fluent_linter.yml
+++ b/.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
--- a/.github/workflows/font_tests.yml
+++ b/.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
--- a/.github/workflows/lint.yml
+++ b/.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
--- a/.github/workflows/publish_website.yml
+++ b/.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
--- a/.github/workflows/types_tests.yml
+++ b/.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
--- a/.gitmodules
+++ b/.gitmodules
@ -0,0 +1,3 @@
+[submodule "test/ttx/fonttools-code"]
+	path = test/ttx/fonttools-code
+	url = https://github.com/behdad/fonttools.git
--- a/.prettierignore
+++ b/.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/
-*~/
--- a/.prettierrc
+++ b/.prettierrc
@ -1,18 +1,8 @@
 {
-  "arrowParens": "avoid",
  "endOfLine": "lf",
  "printWidth": 80,
  "semi": true,
  "tabWidth": 2,
  "trailingComma": "es5",
-  "useTabs": false,
-
-  "overrides": [
-    {
-      files: ["tsconfig.json"],
-      options: {
-        parser: "json",
-      },
-    },
-  ]
+  "useTabs": false
 }
--- a/.stylelintignore
+++ b/.stylelintignore
@ -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/
-*~/
--- a/.stylelintrc
+++ b/.stylelintrc
@ -1,25 +0,0 @@
-{
-  "plugins": [
-    "stylelint-prettier"
-  ],
-
-  "rules": {
-    "prettier/prettier": true,
-
-    "alpha-value-notation": "number",
-    "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,
-  },
-}
--- a/.travis.yml
+++ b/.travis.yml
@ -0,0 +1,11 @@
+language: node_js
+node_js:
+  - node
+cache:
+  directories:
+    - node_modules
+install:
+  - npm install -g npm@latest
+  - npm install -g gulp-cli
+  - npm install
+  - npm update
--- a/README.md
+++ b/README.md
@ -1,8 +1,8 @@
-# PDF.js [![Build Status](https://github.com/mozilla/pdf.js/workflows/CI/badge.svg?branch=master)](https://github.com/mozilla/pdf.js/actions?query=workflow%3ACI+branch%3Amaster)
+# PDF.js [![Build Status](https://travis-ci.org/mozilla/pdf.js.svg?branch=master)](https://travis-ci.org/mozilla/pdf.js)

 [PDF.js](https://mozilla.github.io/pdf.js/) is a Portable Document Format (PDF) viewer that is built with HTML5.

-PDF.js is community-driven and supported by Mozilla. Our goal is to
+PDF.js is community-driven and supported by Mozilla Labs. Our goal is to
 create a general-purpose, web standards-based platform for parsing and
 rendering PDFs.

@ -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 +23,12 @@ 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
-latest JavaScript features; please also see [this wiki page](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support).
+Please note that the "Modern browsers" version assumes native support for
+features such as e.g. `async`/`await`, `Promise`, and `ReadableStream`.

 + 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 +53,14 @@ 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
-
-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`).
+    $ npm install -g gulp-cli

 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:

@ -75,12 +70,22 @@ 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 an ES6 compatible browser; refer to [Building PDF.js](https://github.com/mozilla/pdf.js/blob/master/README.md#building-pdfjs) for usage with older browsers.

 It is also possible to view all test PDF files on the right side by opening:

 + http://localhost:8888/test/pdfs/?frame

+### Online setup with a single click
+
+It's highly recommended to follow the [Getting the Code](#getting-the-code)
+section above, which is the officially supported way to obtain the code.
+However, you may also use [Gitpod](https://gitpod.io) (a free online IDE). With
+a single click it will launch a ready to use development environment, with all
+the necessary dependencies pre-installed and the web server running.
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/mozilla/pdf.js)
+
 ## Building PDF.js

 In order to bundle all `src/` files into two production scripts and build the generic
@ -88,11 +93,7 @@ viewer, run:

    $ gulp generic

-If you need to support older browsers, run:
-
-    $ gulp generic-legacy
-
-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.
 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 +145,7 @@ 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
--- a/docs/contents/examples/index.md
+++ b/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.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;
+canvas.height = viewport.height;
+canvas.width = viewport.width;

 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>
--- a/docs/contents/getting_started/index.md
+++ b/docs/contents/getting_started/index.md
@ -37,22 +37,34 @@ 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 (ES5-compatible)</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>
+    -->
+    <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>Source</h3>
@ -108,8 +120,9 @@ 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
-├── test/                                  - unit, font, reference, and integration tests
+│   ├── pdf.*.js                           - wrapper files for bundling
+│   └── worker_loader.js                   - used for developer builds to load worker files
+├── test/                                  - unit, font and reference tests
 ├── web/                                   - viewer layer
 ├── LICENSE
 ├── README.md
--- a/examples/.eslintrc
+++ b/examples/.eslintrc
@ -3,9 +3,22 @@
    "../.eslintrc"
  ],

+  "parserOptions": {
+    "ecmaVersion": 6,
+  },
+
+  "env": {
+    "es6": false,
+  },
+
  "globals": {
    "pdfjsImageDecoders": false,
    "pdfjsLib": false,
    "pdfjsViewer": false,
+    "Uint8Array": false,
  },
+
+  "rules": {
+    "object-shorthand": ["error", "never"]
+  }
 }
--- a/examples/acroforms/README.md
+++ b/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.
--- a/examples/acroforms/acroforms.html
+++ b/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>
--- a/examples/acroforms/acroforms.js
+++ b/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: container,
+            id: pageNum,
+            scale: DEFAULT_SCALE,
+            defaultViewport: pdfPage.getViewport({ scale: DEFAULT_SCALE }),
+            eventBus: 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)
+    );
+  }
+});
--- a/examples/browserify/.gitignore
+++ b/examples/browserify/.gitignore
@ -0,0 +1 @@
+node_modules/
--- a/examples/browserify/README.md
+++ b/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
--- a/examples/browserify/gulpfile.js
+++ b/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"));
--- a/examples/browserify/index.html
+++ b/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>
--- a/examples/browserify/main.js
+++ b/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: viewport,
+      });
+      return renderTask.promise;
+    });
+  })
+  .catch(function(reason) {
+    console.error("Error: " + reason);
+  });
--- a/examples/browserify/package.json
+++ b/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"
+  }
+}
--- a/examples/browserify/worker.js
+++ b/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");
--- a/examples/components/pageviewer.html
+++ b/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/web/pdf_viewer.mjs" type="module"></script>
+  <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="pageContainer" class="pdfViewer singlePageView"></div>

-  <script src="pageviewer.mjs" type="module"></script>
+  <script src="pageviewer.js"></script>
 </body>
 </html>
--- a/examples/components/pageviewer.js
+++ b/examples/components/pageviewer.js
@ -0,0 +1,64 @@
+/* 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) {
+  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: container,
+      id: PAGE_TO_VIEW,
+      scale: SCALE,
+      defaultViewport: pdfPage.getViewport({ scale: SCALE }),
+      eventBus: 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();
+  });
+});
--- a/examples/components/pageviewer.mjs
+++ b/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();
--- a/examples/components/simpleviewer.html
+++ b/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/web/pdf_viewer.mjs" type="module"></script>
+  <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">
@ -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>
--- a/examples/components/simpleviewer.js
+++ b/examples/components/simpleviewer.js
@ -0,0 +1,80 @@
+/* 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) {
+  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 SEARCH_FOR = ""; // try 'Mozilla';
+
+var container = document.getElementById("viewerContainer");
+
+var eventBus = new pdfjsViewer.EventBus();
+
+// (Optionally) enable hyperlinks within PDF files.
+var pdfLinkService = new pdfjsViewer.PDFLinkService({
+  eventBus: eventBus,
+});
+
+// (Optionally) enable find controller.
+var pdfFindController = new pdfjsViewer.PDFFindController({
+  eventBus: eventBus,
+  linkService: pdfLinkService,
+});
+
+var pdfViewer = new pdfjsViewer.PDFViewer({
+  container: container,
+  eventBus: eventBus,
+  linkService: pdfLinkService,
+  findController: pdfFindController,
+});
+pdfLinkService.setViewer(pdfViewer);
+
+eventBus.on("pagesinit", function() {
+  // We can use pdfViewer now, e.g. let's change default scale.
+  pdfViewer.currentScaleValue = "page-width";
+
+  // We can try searching for things.
+  if (SEARCH_FOR) {
+    pdfFindController.executeCommand("find", { query: SEARCH_FOR });
+  }
+});
+
+// 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);
+});
--- a/examples/components/simpleviewer.mjs
+++ b/examples/components/simpleviewer.mjs
@ -1,97 +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.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.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";
-// To test the AcroForm and/or scripting functionality, try e.g. this file:
-// "../../test/pdfs/160F-2019.pdf"
-
-const ENABLE_XFA = true;
-const SEARCH_FOR = ""; // try "Mozilla";
-
-const SANDBOX_BUNDLE_SRC = new URL(
-  "../../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({
-  eventBus,
-});
-
-// (Optionally) enable find controller.
-const pdfFindController = new pdfjsViewer.PDFFindController({
-  eventBus,
-  linkService: pdfLinkService,
-});
-
-// (Optionally) enable scripting support.
-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.
-  pdfViewer.currentScaleValue = "page-width";
-
-  // We can try searching for things.
-  if (SEARCH_FOR) {
-    eventBus.dispatch("find", { type: "", query: SEARCH_FOR });
-  }
-});
-
-// 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, specifying document for the viewer and
-// the (optional) linkService.
-pdfViewer.setDocument(pdfDocument);
-
-pdfLinkService.setDocument(pdfDocument, null);
--- a/examples/components/singlepageviewer.html
+++ b/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/web/pdf_viewer.mjs" type="module"></script>
+  <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">
@ -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>
--- a/examples/components/singlepageviewer.js
+++ b/examples/components/singlepageviewer.js
@ -0,0 +1,80 @@
+/* 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.PDFSinglePageViewer) {
+  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 SEARCH_FOR = ""; // try 'Mozilla';
+
+var container = document.getElementById("viewerContainer");
+
+var eventBus = new pdfjsViewer.EventBus();
+
+// (Optionally) enable hyperlinks within PDF files.
+var pdfLinkService = new pdfjsViewer.PDFLinkService({
+  eventBus: eventBus,
+});
+
+// (Optionally) enable find controller.
+var pdfFindController = new pdfjsViewer.PDFFindController({
+  eventBus: eventBus,
+  linkService: pdfLinkService,
+});
+
+var pdfSinglePageViewer = new pdfjsViewer.PDFSinglePageViewer({
+  container: container,
+  eventBus: eventBus,
+  linkService: pdfLinkService,
+  findController: pdfFindController,
+});
+pdfLinkService.setViewer(pdfSinglePageViewer);
+
+eventBus.on("pagesinit", function() {
+  // We can use pdfSinglePageViewer now, e.g. let's change default scale.
+  pdfSinglePageViewer.currentScaleValue = "page-width";
+
+  // We can try searching for things.
+  if (SEARCH_FOR) {
+    pdfFindController.executeCommand("find", { query: SEARCH_FOR });
+  }
+});
+
+// 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.
+  pdfSinglePageViewer.setDocument(pdfDocument);
+
+  pdfLinkService.setDocument(pdfDocument, null);
+});
--- a/examples/components/singlepageviewer.mjs
+++ b/examples/components/singlepageviewer.mjs
@ -1,97 +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.PDFSinglePageViewer) {
-  // 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";
-// To test the AcroForm and/or scripting functionality, try e.g. this file:
-// "../../test/pdfs/160F-2019.pdf"
-
-const ENABLE_XFA = true;
-const SEARCH_FOR = ""; // try "Mozilla";
-
-const SANDBOX_BUNDLE_SRC = new URL(
-  "../../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({
-  eventBus,
-});
-
-// (Optionally) enable find controller.
-const pdfFindController = new pdfjsViewer.PDFFindController({
-  eventBus,
-  linkService: pdfLinkService,
-});
-
-// (Optionally) enable scripting support.
-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.
-  pdfSinglePageViewer.currentScaleValue = "page-width";
-
-  // We can try searching for things.
-  if (SEARCH_FOR) {
-    eventBus.dispatch("find", { type: "", query: SEARCH_FOR });
-  }
-});
-
-// 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, specifying document for the viewer and
-// the (optional) linkService.
-pdfSinglePageViewer.setDocument(pdfDocument);
-
-pdfLinkService.setDocument(pdfDocument, null);
--- a/examples/create-react-app/.env
+++ b/examples/create-react-app/.env
@ -0,0 +1 @@
+SKIP_PREFLIGHT_CHECK=true
--- a/examples/create-react-app/.gitignore
+++ b/examples/create-react-app/.gitignore
@ -0,0 +1,24 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+yarn.lock
--- a/examples/create-react-app/README.md
+++ b/examples/create-react-app/README.md
@ -0,0 +1,68 @@
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `yarn start`
+
+Runs the app in the development mode.<br />
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
+
+The page will reload if you make edits.<br />
+You will also see any lint errors in the console.
+
+### `yarn test`
+
+Launches the test runner in the interactive watch mode.<br />
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `yarn build`
+
+Builds the app for production to the `build` folder.<br />
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.<br />
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `yarn eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+
+You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting
+
+### Analyzing the Bundle Size
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size
+
+### Making a Progressive Web App
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app
+
+### Advanced Configuration
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration
+
+### Deployment
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/deployment
+
+### `yarn build` fails to minify
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify
--- a/examples/create-react-app/package.json
+++ b/examples/create-react-app/package.json
@ -0,0 +1,38 @@
+{
+  "name": "create-react-app",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "pdfjs-dist": "^2.2.228",
+    "react": "^16.10.2",
+    "react-dom": "^16.10.2",
+    "react-scripts": "3.2.0"
+  },
+  "devDependencies": {
+    "@types/jest": "^24.0.18",
+    "@types/node": "^12.7.12",
+    "@types/react": "^16.9.5",
+    "@types/react-dom": "^16.9.1",
+    "eslint-config-react-app": "^5.0.2",
+    "eslint-plugin-react-hooks": "^2.1.2",
+    "typescript": "^3.6.3"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}
--- a/examples/create-react-app/public/favicon.ico
+++ b/examples/create-react-app/public/favicon.ico
--- a/examples/create-react-app/public/helloworld.pdf
+++ b/examples/create-react-app/public/helloworld.pdf
@ -0,0 +1,68 @@
+%PDF-1.7
+
+1 0 obj  % entry point
+<<
+  /Type /Catalog
+  /Pages 2 0 R
+>>
+endobj
+
+2 0 obj
+<<
+  /Type /Pages
+  /MediaBox [ 0 0 200 200 ]
+  /Count 1
+  /Kids [ 3 0 R ]
+>>
+endobj
+
+3 0 obj
+<<
+  /Type /Page
+  /Parent 2 0 R
+  /Resources <<
+    /Font <<
+      /F1 4 0 R 
+    >>
+  >>
+  /Contents 5 0 R
+>>
+endobj
+
+4 0 obj
+<<
+  /Type /Font
+  /Subtype /Type1
+  /BaseFont /Times-Roman
+>>
+endobj
+
+5 0 obj  % page content
+<<
+  /Length 44
+>>
+stream
+BT
+70 50 TD
+/F1 12 Tf
+(Hello, world!) Tj
+ET
+endstream
+endobj
+
+xref
+0 6
+0000000000 65535 f 
+0000000010 00000 n 
+0000000079 00000 n 
+0000000173 00000 n 
+0000000301 00000 n 
+0000000380 00000 n 
+trailer
+<<
+  /Size 6
+  /Root 1 0 R
+>>
+startxref
+492
+%%EOF
--- a/examples/create-react-app/public/index.html
+++ b/examples/create-react-app/public/index.html
@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/favicon.ico" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>PDF.js rendering example with Create React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>
--- a/examples/create-react-app/public/manifest.json
+++ b/examples/create-react-app/public/manifest.json
@ -0,0 +1,15 @@
+{
+  "short_name": "PDf.js React App",
+  "name": "PDF.js rendering example with Create React App",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
--- a/examples/create-react-app/public/robots.txt
+++ b/examples/create-react-app/public/robots.txt
@ -1 +1,2 @@
-https://bugzilla.mozilla.org/attachment.cgi?id=9227382
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
--- a/examples/create-react-app/src/app.tsx
+++ b/examples/create-react-app/src/app.tsx
@ -0,0 +1,12 @@
+import React from 'react';
+
+import Pdf from './pdf';
+
+export default function App () {
+  return (
+    <main>
+      <h1>PDF.js rendering example with Create React App</h1>
+      <Pdf />
+    </main>
+  )
+}
--- a/examples/create-react-app/src/index.css
+++ b/examples/create-react-app/src/index.css
@ -0,0 +1,11 @@
+html {
+  text-align: center;
+}
+
+canvas {
+  border: 1px dashed;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  margin: auto;
+}
--- a/examples/create-react-app/src/index.tsx
+++ b/examples/create-react-app/src/index.tsx
@ -0,0 +1,7 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './app';
+
+import './index.css';
+
+ReactDOM.render(<App />, document.getElementById('root'));
--- a/examples/create-react-app/src/pdf.tsx
+++ b/examples/create-react-app/src/pdf.tsx
@ -0,0 +1,62 @@
+import React, { useRef, useEffect } from 'react';
+import PropTypes from 'prop-types';
+
+import pdfjs from 'pdfjs-dist';
+import pdfjsWorker from 'pdfjs-dist/build/pdf.worker.entry';
+
+pdfjs.GlobalWorkerOptions.workerSrc = pdfjsWorker;
+
+const PdfComponent = ({ src }) => {
+  const canvasRef = useRef(null)
+
+  useEffect(() => {
+    const fetchPdf = async () => {
+      const loadingTask = pdfjs.getDocument(src);
+
+      const pdf = await loadingTask.promise;
+
+      const firstPageNumber = 1;
+
+      const page = await pdf.getPage(firstPageNumber);
+
+      const scale = 1.5;
+      const viewport = page.getViewport({scale: scale});
+
+      // Prepare canvas using PDF page dimensions
+      const canvas = canvasRef.current;
+
+      const context = canvas.getContext('2d');
+      canvas.height = viewport.height;
+      canvas.width = viewport.width;
+
+      // Render PDF page into canvas context
+      const renderContext = {
+        canvasContext: context,
+        viewport: viewport
+      };
+      const renderTask = page.render(renderContext);
+
+      await renderTask.promise;
+    };
+
+    fetchPdf();
+  }, [src]);
+
+  return (
+    <canvas
+      ref={canvasRef}
+      width={window.innerWidth}
+      height={window.innerHeight}
+    />
+  );
+}
+
+PdfComponent.propTypes = {
+  src: PropTypes.string
+};
+
+PdfComponent.defaultProps = {
+  src: `${process.env.PUBLIC_URL}/helloworld.pdf`
+};
+
+export default PdfComponent;
--- a/examples/create-react-app/src/react-app-env.d.ts
+++ b/examples/create-react-app/src/react-app-env.d.ts
@ -0,0 +1 @@
+/// <reference types="react-scripts" />
--- a/examples/create-react-app/tsconfig.json
+++ b/examples/create-react-app/tsconfig.json
@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": false,
+    "forceConsistentCasingInFileNames": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react"
+  },
+  "include": [
+    "src"
+  ]
+}
--- a/examples/image_decoders/jpeg_viewer.html
+++ b/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>
--- a/examples/image_decoders/jpeg_viewer.mjs
+++ b/examples/image_decoders/jpeg_viewer.mjs
@ -13,42 +13,64 @@
 * 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");
-const jpegCtx = jpegCanvas.getContext("2d");
+var jpegCanvas = document.getElementById("jpegCanvas");
+var jpegCtx = jpegCanvas.getContext("2d");

 // Load the image data, and convert it to a Uint8Array.
 //
-const response = await fetch(JPEG_IMAGE);
-if (!response.ok) {
-  throw new Error(response.statusText);
+var nonBinaryRequest = false;
+var request = new XMLHttpRequest();
+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({
-  width,
-  height,
+var jpegData = jpegImage.getData({
+  width: width,
+  height: height,
  forceRGB: true,
 });

 // Render the JPEG image on a <canvas>.
 //
-const imageData = jpegCtx.createImageData(width, height);
-const imageBytes = imageData.data;
-for (let j = 0, k = 0, jj = width * height * 4; j < jj; ) {
+var imageData = jpegCtx.createImageData(width, height);
+var imageBytes = imageData.data;
+for (var j = 0, k = 0, jj = width * height * 4; j < jj; ) {
  imageBytes[j++] = jpegData[k++];
  imageBytes[j++] = jpegData[k++];
  imageBytes[j++] = jpegData[k++];
--- a/examples/learning/helloworld.html
+++ b/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);
-  const pdf = await loadingTask.promise;
+  var loadingTask = pdfjsLib.getDocument(url);
+  loadingTask.promise.then(function(pdf) {
    //
    // Fetch the first page
    //
-  const page = await pdf.getPage(1);
-  const scale = 1.5;
-  const viewport = page.getViewport({ scale });
-  // Support HiDPI-screens.
-  const outputScale = window.devicePixelRatio || 1;
+    pdf.getPage(1).then(function(page) {
+      var scale = 1.5;
+      var viewport = page.getViewport({ scale: scale, });

      //
      // Prepare canvas using PDF page dimensions
      //
-  const canvas = document.getElementById("the-canvas");
-  const context = canvas.getContext("2d");
-
-  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";
-
-  const transform = outputScale !== 1
-    ? [outputScale, 0, 0, outputScale, 0, 0]
-    : null;
+      var canvas = document.getElementById('the-canvas');
+      var context = canvas.getContext('2d');
+      canvas.height = viewport.height;
+      canvas.width = viewport.width;

      //
      // Render PDF page into canvas context
      //
-  const renderContext = {
+      var renderContext = {
        canvasContext: context,
-    transform,
-    viewport,
+        viewport: viewport,
      };
      page.render(renderContext);
+    });
+  });
 </script>

 <hr>
--- a/examples/learning/helloworld64.html
+++ b/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.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;
+      canvas.height = viewport.height;
+      canvas.width = viewport.width;

      // Render PDF page into canvas context.
      var renderContext = {
        canvasContext: context,
-    transform,
-    viewport,
+        viewport: viewport,
      };
      page.render(renderContext);
+    });
+  });
 </script>

 <hr>
--- a/examples/learning/prevnext.html
+++ b/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.
-      var outputScale = window.devicePixelRatio || 1;
-
-      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;
+      canvas.height = viewport.height;
+      canvas.width = viewport.width;

      // 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>
--- a/examples/mobile-viewer/viewer.css
+++ b/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);
-  color: rgb(133 133 133 / 1);
+  border-bottom: 1px solid rgba(216, 216, 216, 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 {
@ -110,11 +110,10 @@ 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);
-  background-image: url(images/div_line_left.png),
-    url(images/div_line_right.png);
+  color: rgba(255, 255, 255, 1);
+  background-image: url(images/div_line_left.png), url(images/div_line_right.png);
  background-repeat: no-repeat;
  background-position: left, right;
  background-size: 0.2rem, 0.2rem;
@ -139,7 +138,7 @@ footer {
 }

 .toolbarButton[disabled] {
-  opacity: 0.3;
+  opacity: .3;
 }

 .hidden {
@ -153,7 +152,10 @@ footer {
  position: absolute;
  overflow: auto;
  width: 100%;
-  inset: 5rem 0 4rem;
+  top: 5rem;
+  bottom: 4rem;
+  left: 0;
+  right: 0;
 }

 canvas {
@ -184,59 +186,73 @@ 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);
-  border-bottom: 1px solid rgb(51 51 51 / 1);
+  height: .6rem;
+  background-color: rgba(51, 51, 51, 1);
+  border-bottom: 1px solid rgba(51, 51, 51, 1);
+  margin-top: 5rem;
 }

 #loadingBar .progress {
  position: absolute;
  left: 0;
-  width: 100%;
-  transform: scaleX(var(--progressBar-percent));
-  transform-origin: 0 0;
+  width: 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%);
-  }
-  50% {
-    transform: translateX(100%);
-  }
-  100% {
-    transform: translateX(100%);
-  }
+  0% { left: 0; }
+  50% { left: 100%; }
+  100% { left: 100%; }
 }

-#loadingBar.indeterminate .progress {
-  transform: none;
-  background-color: rgb(153 153 153 / 1);
+#loadingBar .progress.indeterminate {
+  background-color: rgba(153, 153, 153, 1);
  transition: none;
 }

-#loadingBar.indeterminate .progress .glimmer {
+#loadingBar .indeterminate .glimmer {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 5rem;
-  background-image: linear-gradient(
-    to right,
-    rgb(153 153 153 / 1) 0%,
-    rgb(255 255 255 / 1) 50%,
-    rgb(153 153 153 / 1) 100%
-  );
+  background-image: linear-gradient(to right,
+                                    rgba(153, 153, 153, 1) 0%,
+                                    rgba(255, 255, 255, 1) 50%,
+                                    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%;
+}
--- a/examples/mobile-viewer/viewer.html
+++ b/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/web/pdf_viewer.mjs" type="module"></script>
+    <script src="../../node_modules/pdfjs-dist/build/pdf.js"></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>
--- a/examples/mobile-viewer/viewer.mjs
+++ b/examples/mobile-viewer/viewer.mjs
@ -13,27 +13,28 @@
 * 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.
-const TEXT_LAYER_MODE = 0; // DISABLE
-const MAX_IMAGE_SIZE = 1024 * 1024;
-const CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
-const CMAP_PACKED = true;
+var USE_ONLY_CSS_ZOOM = true;
+var TEXT_LAYER_MODE = 0; // DISABLE
+var MAX_IMAGE_SIZE = 1024 * 1024;
+var CMAP_URL = "../../node_modules/pdfjs-dist/cmaps/";
+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";
-const DEFAULT_SCALE_DELTA = 1.1;
-const MIN_SCALE = 0.25;
-const MAX_SCALE = 10.0;
-const DEFAULT_SCALE_VALUE = "auto";
+var DEFAULT_URL = "../../web/compressed.tracemonkey-pldi-09.pdf";
+var DEFAULT_SCALE_DELTA = 1.1;
+var MIN_SCALE = 0.25;
+var MAX_SCALE = 10.0;
+var DEFAULT_SCALE_VALUE = "auto";

-const PDFViewerApplication = {
+var PDFViewerApplication = {
  pdfLoadingTask: null,
  pdfDocument: null,
  pdfViewer: null,
@ -46,7 +47,7 @@ const PDFViewerApplication = {
   * @returns {Promise} - Returns the promise, which is resolved when document
   *                      is opened.
   */
-  open(params) {
+  open: function(params) {
    if (this.pdfLoadingTask) {
      // We need to destroy already opened document
      return this.close().then(
@ -57,13 +58,13 @@ const PDFViewerApplication = {
      );
    }

-    const url = params.url;
-    const self = this;
+    var url = params.url;
+    var self = this;
    this.setTitleUsingUrl(url);

    // Loading document.
-    const loadingTask = pdfjsLib.getDocument({
-      url,
+    var loadingTask = pdfjsLib.getDocument({
+      url: url,
      maxImageSize: MAX_IMAGE_SIZE,
      cMapUrl: CMAP_URL,
      cMapPacked: CMAP_PACKED,
@ -80,24 +81,46 @@ const PDFViewerApplication = {
        self.pdfDocument = pdfDocument;
        self.pdfViewer.setDocument(pdfDocument);
        self.pdfLinkService.setDocument(pdfDocument);
-        self.pdfHistory.initialize({
-          fingerprint: pdfDocument.fingerprints[0],
-        });
+        self.pdfHistory.initialize({ fingerprint: pdfDocument.fingerprint });

        self.loadingBar.hide();
        self.setTitleUsingMetadata(pdfDocument);
      },
-      function (reason) {
-        let key = "pdfjs-loading-error";
-        if (reason instanceof pdfjsLib.InvalidPDFException) {
-          key = "pdfjs-invalid-file-error";
-        } else if (reason instanceof pdfjsLib.MissingPDFException) {
-          key = "pdfjs-missing-file-error";
-        } else if (reason instanceof pdfjsLib.UnexpectedResponseException) {
-          key = "pdfjs-unexpected-response-error";
+      function(exception) {
+        var message = exception && exception.message;
+        var l10n = self.l10n;
+        var loadingErrorMessage;
+
+        if (exception instanceof pdfjsLib.InvalidPDFException) {
+          // change error message also for other builds
+          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: message });
        });
        self.loadingBar.hide();
      }
@ -109,12 +132,15 @@ const PDFViewerApplication = {
   * @returns {Promise} - Returns the promise, which is resolved when all
   *                      destruction is completed.
   */
-  close() {
+  close: function() {
+    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) {
@ -132,30 +158,27 @@ const PDFViewerApplication = {
  },

  get loadingBar() {
-    const bar = document.getElementById("loadingBar");
-    return pdfjsLib.shadow(
-      this,
-      "loadingBar",
-      new pdfjsViewer.ProgressBar(bar)
-    );
+    var bar = new pdfjsViewer.ProgressBar("#loadingBar", {});
+
+    return pdfjsLib.shadow(this, "loadingBar", 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
    }
    this.setTitle(title);
  },

-  setTitleUsingMetadata(pdfDocument) {
-    const self = this;
+  setTitleUsingMetadata: function(pdfDocument) {
+    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 +186,7 @@ const PDFViewerApplication = {
      // Provides some basic debug information
      console.log(
        "PDF " +
-          pdfDocument.fingerprints[0] +
+          pdfDocument.fingerprint +
          " [" +
          info.PDFFormatVersion +
          " " +
@ -176,9 +199,9 @@ 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") {
@ -186,8 +209,8 @@ const PDFViewerApplication = {
        }
      }

-      if (!pdfTitle && info && info.Title) {
-        pdfTitle = info.Title;
+      if (!pdfTitle && info && info["Title"]) {
+        pdfTitle = info["Title"];
      }

      if (pdfTitle) {
@ -202,29 +225,83 @@ const PDFViewerApplication = {
  },

  error: function pdfViewError(message, moreInfo) {
-    const moreInfoText = [
-      `PDF.js v${pdfjsLib.version || "?"} (build: ${pdfjsLib.build || "?"})`,
+    var l10n = this.l10n;
+    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;
@ -235,16 +312,16 @@ const PDFViewerApplication = {
    return this.pdfDocument.numPages;
  },

-  get page() {
-    return this.pdfViewer.currentPageNumber;
-  },
-
  set page(val) {
    this.pdfViewer.currentPageNumber = val;
  },

+  get page() {
+    return this.pdfViewer.currentPageNumber;
+  },
+
  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 +331,7 @@ 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;
@ -264,31 +341,31 @@ const PDFViewerApplication = {
  },

  initUI: function pdfViewInitUI() {
-    const eventBus = new pdfjsViewer.EventBus();
+    var eventBus = new pdfjsViewer.EventBus();
    this.eventBus = eventBus;

-    const linkService = new pdfjsViewer.PDFLinkService({
-      eventBus,
+    var linkService = new pdfjsViewer.PDFLinkService({
+      eventBus: eventBus,
    });
    this.pdfLinkService = linkService;

-    this.l10n = new pdfjsViewer.GenericL10n();
+    this.l10n = pdfjsViewer.NullL10n;

-    const container = document.getElementById("viewerContainer");
-    const pdfViewer = new pdfjsViewer.PDFViewer({
-      container,
-      eventBus,
-      linkService,
+    var container = document.getElementById("viewerContainer");
+    var pdfViewer = new pdfjsViewer.PDFViewer({
+      container: container,
+      eventBus: eventBus,
+      linkService: linkService,
      l10n: this.l10n,
-      maxCanvasPixels: MAX_CANVAS_PIXELS,
+      useOnlyCssZoom: USE_ONLY_CSS_ZOOM,
      textLayerMode: TEXT_LAYER_MODE,
    });
    this.pdfViewer = pdfViewer;
    linkService.setViewer(pdfViewer);

    this.pdfHistory = new pdfjsViewer.PDFHistory({
-      eventBus,
-      linkService,
+      eventBus: eventBus,
+      linkService: linkService,
    });
    linkService.setHistory(this.pdfHistory);

@ -308,9 +385,7 @@ const PDFViewerApplication = {
      PDFViewerApplication.zoomOut();
    });

-    document
-      .getElementById("pageNumber")
-      .addEventListener("click", function () {
+    document.getElementById("pageNumber").addEventListener("click", function() {
      this.select();
    });

@ -335,8 +410,8 @@ const PDFViewerApplication = {
    eventBus.on(
      "pagechanging",
      function(evt) {
-        const page = evt.pageNumber;
-        const numPages = PDFViewerApplication.pagesCount;
+        var page = evt.pageNumber;
+        var numPages = PDFViewerApplication.pagesCount;

        document.getElementById("pageNumber").value = page;
        document.getElementById("previous").disabled = page <= 1;
@ -347,8 +422,6 @@ const PDFViewerApplication = {
  },
 };

-window.PDFViewerApplication = PDFViewerApplication;
-
 document.addEventListener(
  "DOMContentLoaded",
  function() {
@ -357,14 +430,16 @@ document.addEventListener(
  true
 );

-// The offsetParent is not set until the PDF.js iframe or object is visible;
-// waiting for first animation.
-const animationStarted = new Promise(function (resolve) {
+(function animationStartedClosure() {
+  // The offsetParent is not set until the PDF.js iframe or object is visible.
+  // 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,
  });
--- a/examples/node/domstubs.js
+++ b/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: function(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: function(NS, element) {
+    var elObject = new DOMElement(element);
+    return elObject;
+  },
+
+  createElement: function(element) {
+    return this.createElementNS("", element);
+  },
+
+  getElementsByTagName: function(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];
+  });
+};
--- a/examples/node/getinfo.mjs
+++ b/examples/node/getinfo.mjs
@ -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 =
-  process.argv[2] || "../../web/compressed.tracemonkey-pldi-09.pdf";
+var pdfPath = 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;
--- a/examples/node/pdf2png/pdf2png.js
+++ b/examples/node/pdf2png/pdf2png.js
@ -0,0 +1,98 @@
+/* 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: canvas,
+      context: 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");
+
+// Relative path of the PDF file.
+var pdfURL = "../../../web/compressed.tracemonkey-pldi-09.pdf";
+
+// Read the PDF file into a typed array so PDF.js can load it.
+var rawData = new Uint8Array(fs.readFileSync(pdfURL));
+
+// Load the PDF file.
+var loadingTask = pdfjsLib.getDocument(rawData);
+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: viewport,
+        canvasFactory: 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);
+  });
--- a/examples/node/pdf2png/pdf2png.mjs
+++ b/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);
-}
--- a/examples/node/pdf2svg.js
+++ b/examples/node/pdf2svg.js
@ -0,0 +1,137 @@
+/* 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");
+
+// 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: 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: data,
+  // Try to export JPEG images directly if they don't need any further
+  // processing.
+  nativeImageDecoderSupport: pdfjsLib.NativeImageDecoding.DISPLAY,
+});
+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);
+    }
+  );
--- a/examples/svgviewer/README.md
+++ b/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.
--- a/examples/svgviewer/index.html
+++ b/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>
--- a/examples/svgviewer/viewer.js
+++ b/examples/svgviewer/viewer.js
@ -0,0 +1,69 @@
+/* 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) {
+  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: eventBus,
+});
+
+var pdfViewer = new pdfjsViewer.PDFViewer({
+  container: container,
+  eventBus: 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);
+});
--- a/examples/text-only/index.html
+++ b/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="pdf2svg.mjs" type="module"></script>
+    <script src="../../node_modules/pdfjs-dist/build/pdf.js"></script>
+    <script src="pdf2svg.js"></script>
 </head>
 <body>
  <p>Text-only PDF.js example</p>
--- a/examples/text-only/pdf2svg.mjs
+++ b/examples/text-only/pdf2svg.mjs
@ -13,17 +13,17 @@
 * limitations under the License.
 */

-const PDF_PATH = "../../web/compressed.tracemonkey-pldi-09.pdf";
-const PAGE_NUMBER = 1;
-const PAGE_SCALE = 1.5;
-const SVG_NS = "http://www.w3.org/2000/svg";
+var PDF_PATH = "../../web/compressed.tracemonkey-pldi-09.pdf";
+var PAGE_NUMBER = 1;
+var PAGE_SCALE = 1.5;
+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
@ -33,39 +33,42 @@ 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 });
-  const pdfDocument = await loadingTask.promise;
-  const page = await pdfDocument.getPage(PAGE_NUMBER);
-  const viewport = page.getViewport({ scale: PAGE_SCALE });
-  const textContent = await page.getTextContent();
+  var loadingTask = pdfjsLib.getDocument({ url: PDF_PATH });
+  loadingTask.promise.then(function(pdfDocument) {
+    pdfDocument.getPage(PAGE_NUMBER).then(function(page) {
+      var viewport = page.getViewport({ scale: PAGE_SCALE });
+      page.getTextContent().then(function(textContent) {
        // building SVG and adding that to the DOM
-  const svg = buildSVG(viewport, textContent);
-  document.getElementById("pageContainer").append(svg);
-  // Release page resources.
-  page.cleanup();
+        var svg = buildSVG(viewport, textContent);
+        document.getElementById("pageContainer").appendChild(svg);
+      });
+    });
+  });
 }

 document.addEventListener("DOMContentLoaded", function() {
  if (typeof pdfjsLib === "undefined") {
-    // eslint-disable-next-line no-alert
-    alert("Please build the pdfjs-dist library using\n  `gulp dist-install`");
+    alert(
+      "Built version of PDF.js was not found.\n" +
+        "Please run `gulp dist-install`."
+    );
    return;
  }
  pageLoaded();
--- a/examples/webpack/README.md
+++ b/examples/webpack/README.md
@ -18,16 +18,10 @@ 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
-Webpack users. Installing `worker-loader` is no longer necessary.
+If you are getting the `Setting up fake worker` warning, make sure you are importing `pdfjs-dist/webpack` which is the zero-configuration method for Webpack users:

-    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).
--- a/examples/webpack/main.js
+++ b/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: viewport,
+      });
+      return renderTask.promise;
+    });
+  })
+  .catch(function(reason) {
+    console.error("Error: " + reason);
+  });
--- a/examples/webpack/main.mjs
+++ b/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;
--- a/examples/webpack/package.json
+++ b/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-cli": "^5.1.4",
+    "webpack": "4.21.0",
+    "webpack-cli": "^3.1.2",
    "pdfjs-dist": "../../node_modules/pdfjs-dist"
  }
 }
--- a/examples/webpack/webpack.config.js
+++ b/examples/webpack/webpack.config.js
@ -1,13 +1,11 @@
-/* eslint-disable import/no-commonjs */
-
-const webpack = require("webpack"); // eslint-disable-line no-unused-vars
-const path = require("path");
+var webpack = require("webpack"); // eslint-disable-line no-unused-vars
+var path = require("path");

 module.exports = {
  context: __dirname,
  entry: {
-    main: "./main.mjs",
-    "pdf.worker": "pdfjs-dist/build/pdf.worker.mjs",
+    main: "./main.js",
+    "pdf.worker": "pdfjs-dist/build/pdf.worker.entry",
  },
  mode: "none",
  output: {
--- a/extensions/.eslintrc
+++ b/extensions/.eslintrc
@ -0,0 +1,9 @@
+{
+  "extends": [
+    ../.eslintrc
+  ],
+
+  "rules": {
+    "no-restricted-globals": "off",
+  },
+}
--- a/extensions/chromium/.eslintrc
+++ b/extensions/chromium/.eslintrc
@ -17,6 +17,6 @@

  "rules": {
    "mozilla/import-globals": "error",
-    "no-var": "off",
+    "object-shorthand": "off",
  },
 }
--- a/extensions/chromium/contentscript.js
+++ b/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);
  }
 }
@ -150,7 +150,7 @@ function updateObjectElement(elem) {
  //   attribute reloads the content (provided that the type was correctly set).
  // - When <object type=text/html data="chrome-extension://..."> is used
  //   (tested with a data-URL, data:text/html,<object...>, the extension's
-  //   origin allowlist is not set up, so the viewer can't load the PDF file.
+  //   origin whitelist is not set up, so the viewer can't load the PDF file.
  // - The content of the <object> tag may be affected by <param> tags.
  //
  // To make sure that our solution works for all cases, we will insert a frame
@ -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);
--- a/extensions/chromium/contentstyle.css
+++ b/extensions/chromium/contentstyle.css
@ -1,13 +1,12 @@
 /**
 * Detect creation of <embed> and <object> tags.
 */
-@keyframes pdfjs-detected-object-or-embed {
-  from {
-    /* empty */
-  }
-}
-object,
-embed {
+@-webkit-keyframes pdfjs-detected-object-or-embed { from {} }
+@keyframes         pdfjs-detected-object-or-embed { from {} }
+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;
--- a/extensions/chromium/extension-router.js
+++ b/extensions/chromium/extension-router.js
@ -40,14 +40,14 @@ limitations under the License.
   */
  function parseExtensionURL(url) {
    url = url.substring(CRX_BASE_URL.length);
-    // Find the (url-encoded) colon and verify that the scheme is allowed.
+    // Find the (url-encoded) colon and verify that the scheme is whitelisted.
    var schemeIndex = url.search(/:|%3A/i);
    if (schemeIndex === -1) {
      return undefined;
    }
    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) {
-        chrome.tabs.reload(id);
+      for (var i = 0; i < tabsFromLastSession.length; ++i) {
+        chrome.tabs.reload(tabsFromLastSession[i].id);
      }
    }
  );
--- a/extensions/chromium/manifest.json
+++ b/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",
-    "webRequestBlocking",
+    "webRequest", "webRequestBlocking",
    "<all_urls>",
    "tabs",
    "webNavigation",
    "storage"
  ],
-  "content_scripts": [
-    {
-      "matches": ["http://*/*", "https://*/*", "ftp://*/*", "file://*/*"],
+  "content_scripts": [{
+    "matches": [
+      "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"
  },
--- a/extensions/chromium/options/migration.js
+++ b/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) {
--- a/extensions/chromium/options/options.html
+++ b/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>
--- a/extensions/chromium/options/options.js
+++ b/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";
--- a/extensions/chromium/pageAction/background.js
+++ b/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);
--- a/extensions/chromium/pdfHandler-vcros.js
+++ b/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);
--- a/extensions/chromium/pdfHandler.js
+++ b/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
-  // 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;
+  return VIEWER_URL + "?file=" + encodeURIComponent(pdf_url);
 }

 /**
@ -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;
    }
@ -80,7 +73,10 @@ function getHeaderFromHeaders(headers, headerName) {
 function isPdfFile(details) {
  var header = getHeaderFromHeaders(details.responseHeaders, "content-type");
  if (header) {
-    var headerValue = header.value.toLowerCase().split(";", 1)[0].trim();
+    var headerValue = header.value
+      .toLowerCase()
+      .split(";", 1)[0]
+      .trim();
    if (headerValue === "application/pdf") {
      return true;
    }
@ -162,7 +158,19 @@ 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 +245,21 @@ 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",
+]);
--- a/extensions/chromium/preferences_schema.json
+++ b/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 +42,32 @@
      "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
+    },
+    "eventBusDispatchToDOM": {
+      "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 +95,37 @@
      "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 +143,18 @@
      "description": "Whether to prevent the extension from reporting the extension and browser version to the extension developers.",
      "default": false
    },
-    "annotationMode": {
-      "type": "integer",
-      "enum": [0, 1, 2, 3],
-      "default": 2
+    "renderer": {
+      "type": "string",
+      "enum": [
+        "canvas",
+        "svg"
+      ],
+      "default": "canvas"
    },
-    "annotationEditorMode": {
-      "type": "integer",
-      "enum": [-1, 0, 3, 15],
-      "default": 0
-    },
-    "enablePermissions": {
+    "renderInteractiveForms": {
      "type": "boolean",
      "default": false
    },
-    "enableXfa": {
-      "type": "boolean",
-      "default": true
-    },
    "historyUpdateUrl": {
      "type": "boolean",
      "default": false
@ -170,38 +167,33 @@
    },
    "enablePrintAutoRotate": {
      "title": "Automatically rotate printed pages",
-      "description": "When enabled, landscape pages are rotated when printed.",
+      "description": "When enabled, pages whose orientation differ from the first page 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": {
-      "description": "When enabled, the pdf rendering will use the high contrast mode colors",
-      "type": "boolean",
-      "default": false
-    },
-    "pageColorsBackground": {
-      "description": "The color is a string as defined in CSS. Its goal is to help improve readability in high contrast mode",
-      "type": "string",
-      "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"
    }
  }
 }
--- a/extensions/chromium/preserve-referer.js
+++ b/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"]
  );
--- a/extensions/chromium/telemetry.js
+++ b/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;
--- a/extensions/firefox/.eslintrc
+++ b/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"],
--- a/extensions/firefox/README.mozilla
+++ b/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
--- a/Show More
+++ b/Show More