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Remove the remaining IE 11 polyfills #12736

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merged 1 commit into from
Dec 14, 2020
Merged

Remove the remaining IE 11 polyfills #12736

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1 change: 0 additions & 1 deletion gulpfile.js
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Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,6 @@ var AUTOPREFIXER_CONFIG = {
"Chrome >= 49", // Last supported on Windows XP
"Firefox >= 52", // Last supported on Windows XP
"Firefox ESR",
"IE >= 11",
"Safari >= 9",
"> 0.5%",
"not dead",
Expand Down
149 changes: 12 additions & 137 deletions src/shared/compatibility.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ if (
(typeof globalThis === "undefined" || !globalThis._pdfjsCompatibilityChecked)
) {
// Provides support for globalThis in legacy browsers.
// Support: IE11/Edge, Opera
// Support: Firefox<65, Chrome<71, Safari<12.1
if (typeof globalThis === "undefined" || globalThis.Math !== Math) {
// eslint-disable-next-line no-global-assign
globalThis = require("core-js/es/global-this");
Expand Down Expand Up @@ -50,98 +50,17 @@ if (
};
})();

// Provides support for String.prototype.startsWith in legacy browsers.
// Support: IE, Chrome<41
(function checkStringStartsWith() {
if (String.prototype.startsWith) {
return;
}
require("core-js/es/string/starts-with.js");
})();

// Provides support for String.prototype.endsWith in legacy browsers.
// Support: IE, Chrome<41
(function checkStringEndsWith() {
if (String.prototype.endsWith) {
return;
}
require("core-js/es/string/ends-with.js");
})();

// Provides support for String.prototype.includes in legacy browsers.
// Support: IE, Chrome<41
(function checkStringIncludes() {
if (String.prototype.includes) {
return;
}
require("core-js/es/string/includes.js");
})();

// Provides support for Array.prototype.includes in legacy browsers.
// Support: IE, Chrome<47
(function checkArrayIncludes() {
if (Array.prototype.includes) {
return;
}
require("core-js/es/array/includes.js");
})();

// Provides support for Array.from in legacy browsers.
// Support: IE
(function checkArrayFrom() {
if (Array.from) {
return;
}
require("core-js/es/array/from.js");
})();

// Provides support for Object.assign in legacy browsers.
// Support: IE
(function checkObjectAssign() {
if (Object.assign) {
return;
}
require("core-js/es/object/assign.js");
})();

// Provides support for Object.fromEntries in legacy browsers.
// Support: IE, Chrome<73
// Support: Firefox<63, Chrome<73, Safari<12.1
(function checkObjectFromEntries() {
if (Object.fromEntries) {
return;
}
require("core-js/es/object/from-entries.js");
})();

// Provides support for Math.log2 in legacy browsers.
// Support: IE, Chrome<38
(function checkMathLog2() {
if (Math.log2) {
return;
}
Math.log2 = require("core-js/es/math/log2.js");
})();

// Provides support for Number.isNaN in legacy browsers.
// Support: IE.
(function checkNumberIsNaN() {
if (Number.isNaN) {
return;
}
Number.isNaN = require("core-js/es/number/is-nan.js");
})();

// Provides support for Number.isInteger in legacy browsers.
// Support: IE, Chrome<34
(function checkNumberIsInteger() {
if (Number.isInteger) {
return;
}
Number.isInteger = require("core-js/es/number/is-integer.js");
})();

// Provides support for TypedArray.prototype.slice in legacy browsers.
// Support: IE
// Support: Safari<10
(function checkTypedArraySlice() {
if (Uint8Array.prototype.slice) {
return;
Expand All @@ -151,7 +70,7 @@ if (

// Provides support for *recent* additions to the Promise specification,
// however basic Promise support is assumed to be available natively.
// Support: Firefox<71, Safari<13, Chrome<76
// Support: Firefox<71, Chrome<76, Safari<13
(function checkPromise() {
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
// The current image decoders are synchronous, hence `Promise` shouldn't
Expand All @@ -164,7 +83,7 @@ if (
globalThis.Promise = require("core-js/es/promise/index.js");
})();

// Support: IE
// Support: Safari
(function checkURL() {
if (typeof PDFJSDev === "undefined" || !PDFJSDev.test("PRODUCTION")) {
// Prevent "require is not a function" errors in development mode,
Expand All @@ -182,7 +101,7 @@ if (
globalThis.URL = require("core-js/web/url.js");
})();

// Support: IE, Node.js
// Support: Safari<10.1, Node.js
(function checkReadableStream() {
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
// The current image decoders are synchronous, hence `ReadableStream`
Expand Down Expand Up @@ -211,44 +130,8 @@ if (
globalThis.ReadableStream = require("web-streams-polyfill/dist/ponyfill.js").ReadableStream;
})();

// We want to support Map iteration, but it doesn't seem possible to easily
// test for that specifically; hence using a similarly unsupported property.
// Support: IE11
(function checkMapEntries() {
if (globalThis.Map && globalThis.Map.prototype.entries) {
return;
}
globalThis.Map = require("core-js/es/map/index.js");
})();

// We want to support Set iteration, but it doesn't seem possible to easily
// test for that specifically; hence using a similarly unsupported property.
// Support: IE11
(function checkSetEntries() {
if (globalThis.Set && globalThis.Set.prototype.entries) {
return;
}
globalThis.Set = require("core-js/es/set/index.js");
})();

// Support: IE<11, Safari<8, Chrome<36
(function checkWeakMap() {
if (globalThis.WeakMap) {
return;
}
globalThis.WeakMap = require("core-js/es/weak-map/index.js");
})();

// Support: IE11
(function checkWeakSet() {
if (globalThis.WeakSet) {
return;
}
globalThis.WeakSet = require("core-js/es/weak-set/index.js");
})();

// Provides support for String.codePointAt in legacy browsers.
// Support: IE11.
// Support: Safari<10
(function checkStringCodePointAt() {
if (String.prototype.codePointAt) {
return;
Expand All @@ -257,24 +140,16 @@ if (
})();

// Provides support for String.fromCodePoint in legacy browsers.
// Support: IE11.
// Support: Safari<10
(function checkStringFromCodePoint() {
if (String.fromCodePoint) {
return;
}
String.fromCodePoint = require("core-js/es/string/from-code-point.js");
})();

// Support: IE
(function checkSymbol() {
if (globalThis.Symbol) {
return;
}
require("core-js/es/symbol/index.js");
})();

// Provides support for String.prototype.padStart in legacy browsers.
// Support: IE, Chrome<57
// Support: Chrome<57, Safari<10
(function checkStringPadStart() {
if (String.prototype.padStart) {
return;
Expand All @@ -283,7 +158,7 @@ if (
})();

// Provides support for String.prototype.padEnd in legacy browsers.
// Support: IE, Chrome<57
// Support: Chrome<57, Safari<10
(function checkStringPadEnd() {
if (String.prototype.padEnd) {
return;
Expand All @@ -292,7 +167,7 @@ if (
})();

// Provides support for Object.values in legacy browsers.
// Support: IE, Chrome<54
// Support: Chrome<54, Safari<10.1
(function checkObjectValues() {
if (Object.values) {
return;
Expand All @@ -301,7 +176,7 @@ if (
})();

// Provides support for Object.entries in legacy browsers.
// Support: IE, Chrome<54
// Support: Chrome<54, Safari<10.1
(function checkObjectEntries() {
if (Object.entries) {
return;
Expand Down