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Explicitly state intended support in compatibility.js

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Add comments with supported browser versions where missing.

Method:
- Use MDN compat tables if available.
- Otherwise test in Chrome (31+) otherwise.
  (the Chrome Web Store does not update older versions of
   Chrome, so probably nobody is interested in even older
   versions, even though there is an existing comment for
   Chrome<29 at `document.currentScript`).
This commit is contained in:
Rob Wu 2018-01-23 20:12:03 +01:00
parent 628e70fbb5
commit 44025a3ec1
1 changed files with 8 additions and 4 deletions
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12
src/shared/compatibility.js
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@ -75,6 +75,7 @@ PDFJS.compatibilityChecked = true;
})();
// Checks if navigator.language is supported
// Support: IE<11
(function checkNavigatorLanguage() {
if (typeof navigator === 'undefined') {
return;
@ -151,7 +152,7 @@ PDFJS.compatibilityChecked = true;
})();
// Provides support for Object.values in legacy browsers.
// Support: IE.
// Support: IE, Chrome<54
(function checkObjectValues() {
if (Object.values) {
return;
@ -160,7 +161,7 @@ PDFJS.compatibilityChecked = true;
})();
// Provides support for Array.prototype.includes in legacy browsers.
// Support: IE.
// Support: IE, Chrome<47
(function checkArrayIncludes() {
if (Array.prototype.includes) {
return;
@ -169,7 +170,7 @@ 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 +188,7 @@ 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 +196,7 @@ 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 +204,7 @@ 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 +212,7 @@ 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/ */