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Merge pull request #9409 from Rob--W/compat-chrome-49

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Fix Chrome 49 compatibility via polyfills
This commit is contained in:
Jonas Jenwald 2018-01-26 14:36:31 +01:00 committed by GitHub
commit 28c87ce9c6
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 25 additions and 16 deletions
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38
src/shared/compatibility.js
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@ -18,10 +18,16 @@
// Skip compatibility checks for the extensions and if we already ran
// this module.
if ((typeof PDFJSDev === 'undefined' ||
!PDFJSDev.test('FIREFOX || MOZCENTRAL || CHROME')) &&
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) &&
(typeof PDFJS === 'undefined' || !PDFJS.compatibilityChecked)) {
// In the Chrome extension, most of the polyfills are unnecessary.
// We support down to Chrome 49, because it's still commonly used by Windows XP
// users - https://github.com/mozilla/pdf.js/issues/9397
if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('CHROME')) {
var globalScope = require('./global_scope');
const isNodeJS = require('./is_node');
var userAgent = (typeof navigator !== 'undefined' && navigator.userAgent) || '';
@ -75,6 +81,7 @@ PDFJS.compatibilityChecked = true;
})();
// Checks if navigator.language is supported
// Support: IE<11
(function checkNavigatorLanguage() {
if (typeof navigator === 'undefined') {
return;
@ -150,17 +157,8 @@ PDFJS.compatibilityChecked = true;
};
})();
// Provides support for Object.values in legacy browsers.
// Support: IE.
(function checkObjectValues() {
if (Object.values) {
return;
}
Object.values = require('core-js/fn/object/values');
})();
// Provides support for Array.prototype.includes in legacy browsers.
// Support: IE.
// Support: IE, Chrome<47
(function checkArrayIncludes() {
if (Array.prototype.includes) {
return;
@ -169,7 +167,7 @@ PDFJS.compatibilityChecked = true;
})();
// Provides support for Math.log2 in legacy browsers.
// Support: IE.
// Support: IE, Chrome<38
(function checkMathLog2() {
if (Math.log2) {
return;
@ -187,7 +185,7 @@ PDFJS.compatibilityChecked = true;
})();
// Provides support for Number.isInteger in legacy browsers.
// Support: IE.
// Support: IE, Chrome<34
(function checkNumberIsInteger() {
if (Number.isInteger) {
return;
@ -195,6 +193,7 @@ PDFJS.compatibilityChecked = true;
Number.isInteger = require('core-js/fn/number/is-integer');
})();
// Support: IE, Safari<8, Chrome<32
(function checkPromise() {
if (globalScope.Promise) {
return;
@ -202,6 +201,7 @@ PDFJS.compatibilityChecked = true;
globalScope.Promise = require('core-js/fn/promise');
})();
// Support: IE<11, Safari<8, Chrome<36
(function checkWeakMap() {
if (globalScope.WeakMap) {
return;
@ -209,6 +209,7 @@ PDFJS.compatibilityChecked = true;
globalScope.WeakMap = require('core-js/fn/weak-map');
})();
// Support: IE, Chrome<32
// Polyfill from https://github.com/Polymer/URL
/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
@ -861,4 +862,15 @@ PDFJS.compatibilityChecked = true;
globalScope.URL = JURL;
})();
} // End of !PDFJSDev.test('CHROME')
// Provides support for Object.values in legacy browsers.
// Support: IE, Chrome<54
(function checkObjectValues() {
if (Object.values) {
return;
}
Object.values = require('core-js/fn/object/values');
})();
}

3
src/shared/streams_polyfill.js
View File

@ -31,9 +31,6 @@ if (typeof ReadableStream !== 'undefined') {
if (isReadableStreamSupported) {
exports.ReadableStream = ReadableStream;
} else {
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('CHROME')) {
throw new Error('ReadableStream polyfill is not found for Chrome bundle');
}
exports.ReadableStream =
require('../../external/streams/streams-lib').ReadableStream;
}