2a7d1557f9
Previously this rule has been enabled in the `web/` folder, and in select files in the `src/` sub-folders. In this case, enabling of this rule didn't actually require any further code changes. Please find additional details about the ESLint rule at https://eslint.org/docs/rules/no-var
312 lines
9.1 KiB
JavaScript
312 lines
9.1 KiB
JavaScript
/* 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 { isNodeJS } from "./is_node.js";
|
|
|
|
// Skip compatibility checks for modern builds and if we already ran the module.
|
|
if (
|
|
(typeof PDFJSDev === "undefined" || !PDFJSDev.test("SKIP_BABEL")) &&
|
|
(typeof globalThis === "undefined" || !globalThis._pdfjsCompatibilityChecked)
|
|
) {
|
|
// Provides support for globalThis in legacy browsers.
|
|
// Support: IE11/Edge, Opera
|
|
if (typeof globalThis === "undefined" || globalThis.Math !== Math) {
|
|
// eslint-disable-next-line no-global-assign
|
|
globalThis = require("core-js/es/global-this");
|
|
}
|
|
globalThis._pdfjsCompatibilityChecked = true;
|
|
|
|
// Support: Node.js
|
|
(function checkNodeBtoa() {
|
|
if (globalThis.btoa || !isNodeJS) {
|
|
return;
|
|
}
|
|
globalThis.btoa = function (chars) {
|
|
// eslint-disable-next-line no-undef
|
|
return Buffer.from(chars, "binary").toString("base64");
|
|
};
|
|
})();
|
|
|
|
// Support: Node.js
|
|
(function checkNodeAtob() {
|
|
if (globalThis.atob || !isNodeJS) {
|
|
return;
|
|
}
|
|
globalThis.atob = function (input) {
|
|
// eslint-disable-next-line no-undef
|
|
return Buffer.from(input, "base64").toString("binary");
|
|
};
|
|
})();
|
|
|
|
// 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
|
|
(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
|
|
(function checkTypedArraySlice() {
|
|
if (Uint8Array.prototype.slice) {
|
|
return;
|
|
}
|
|
require("core-js/es/typed-array/slice");
|
|
})();
|
|
|
|
// 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
|
|
(function checkPromise() {
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
|
|
// The current image decoders are synchronous, hence `Promise` shouldn't
|
|
// need to be polyfilled for the IMAGE_DECODERS build target.
|
|
return;
|
|
}
|
|
if (globalThis.Promise.allSettled) {
|
|
return;
|
|
}
|
|
globalThis.Promise = require("core-js/es/promise/index.js");
|
|
})();
|
|
|
|
// Support: IE
|
|
(function checkURL() {
|
|
if (typeof PDFJSDev === "undefined" || !PDFJSDev.test("PRODUCTION")) {
|
|
// Prevent "require is not a function" errors in development mode,
|
|
// since the `URL` constructor should be available in modern browers.
|
|
return;
|
|
} else if (!PDFJSDev.test("GENERIC")) {
|
|
// The `URL` constructor is assumed to be available in the extension
|
|
// builds.
|
|
return;
|
|
} else if (PDFJSDev.test("IMAGE_DECODERS")) {
|
|
// The current image decoders don't use the `URL` constructor, so it
|
|
// doesn't need to be polyfilled for the IMAGE_DECODERS build target.
|
|
return;
|
|
}
|
|
globalThis.URL = require("core-js/web/url.js");
|
|
})();
|
|
|
|
// Support: IE, Node.js
|
|
(function checkReadableStream() {
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
|
|
// The current image decoders are synchronous, hence `ReadableStream`
|
|
// shouldn't need to be polyfilled for the IMAGE_DECODERS build target.
|
|
return;
|
|
}
|
|
let isReadableStreamSupported = false;
|
|
|
|
if (typeof ReadableStream !== "undefined") {
|
|
// MS Edge may say it has ReadableStream but they are not up to spec yet.
|
|
try {
|
|
// eslint-disable-next-line no-new
|
|
new ReadableStream({
|
|
start(controller) {
|
|
controller.close();
|
|
},
|
|
});
|
|
isReadableStreamSupported = true;
|
|
} catch (e) {
|
|
// The ReadableStream constructor cannot be used.
|
|
}
|
|
}
|
|
if (isReadableStreamSupported) {
|
|
return;
|
|
}
|
|
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.
|
|
(function checkStringCodePointAt() {
|
|
if (String.prototype.codePointAt) {
|
|
return;
|
|
}
|
|
require("core-js/es/string/code-point-at.js");
|
|
})();
|
|
|
|
// Provides support for String.fromCodePoint in legacy browsers.
|
|
// Support: IE11.
|
|
(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
|
|
(function checkStringPadStart() {
|
|
if (String.prototype.padStart) {
|
|
return;
|
|
}
|
|
require("core-js/es/string/pad-start.js");
|
|
})();
|
|
|
|
// Provides support for String.prototype.padEnd in legacy browsers.
|
|
// Support: IE, Chrome<57
|
|
(function checkStringPadEnd() {
|
|
if (String.prototype.padEnd) {
|
|
return;
|
|
}
|
|
require("core-js/es/string/pad-end.js");
|
|
})();
|
|
|
|
// Provides support for Object.values in legacy browsers.
|
|
// Support: IE, Chrome<54
|
|
(function checkObjectValues() {
|
|
if (Object.values) {
|
|
return;
|
|
}
|
|
Object.values = require("core-js/es/object/values.js");
|
|
})();
|
|
|
|
// Provides support for Object.entries in legacy browsers.
|
|
// Support: IE, Chrome<54
|
|
(function checkObjectEntries() {
|
|
if (Object.entries) {
|
|
return;
|
|
}
|
|
Object.entries = require("core-js/es/object/entries.js");
|
|
})();
|
|
}
|