2f0ed3a9ca
*Please note:* The dates below are still a little ways off, however that obviously won't affect the existing PDF.js releases. Hence I think that we can make these changes now, since by the time of the *next* official PDF.js release they'll likely match up pretty well.[1] While we "support" some (by now) fairly old browsers, that essentially means that the library (and viewer) will load and that the basic functionality will work as intended.[2] However, in older browsers, some functionality may not be available and generally we'll ask users to update to a modern browser when bugs (specific to old browsers) are reported.[3] Since we've previously settled on only supporting browsers/environments that are approximately *three years old*, this patch updates the minimum supported browsers/environments as follows: - Chrome 76, which was released on 2019-07-30; see https://en.wikipedia.org/wiki/Google_Chrome_version_history - Firefox ESR (as before); see https://wiki.mozilla.org/Release_Management/Calendar - Safari 13, which was released on 2019-09-19; see https://en.wikipedia.org/wiki/Safari_version_history#Safari_13 - Node.js 14, which was release on 2020-04-21 (all older versions have reached EOL); see https://en.wikipedia.org/wiki/Node.js#Releases --- [1] Given that the releases usually happen every two to three months. [2] Assuming that a `legacy/`-build is being used, of course. [3] In general it's never a good idea to use old/outdated browsers, since those may contain *known* security vulnerabilities.
97 lines
2.8 KiB
JavaScript
97 lines
2.8 KiB
JavaScript
/* Copyright 2017 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* globals __non_webpack_require__ */
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import { isNodeJS } from "./is_node.js";
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// Skip compatibility checks for modern builds and if we already ran the module.
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if (
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(typeof PDFJSDev === "undefined" || !PDFJSDev.test("SKIP_BABEL")) &&
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!globalThis._pdfjsCompatibilityChecked
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) {
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globalThis._pdfjsCompatibilityChecked = true;
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// Support: Node.js
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(function checkNodeBtoa() {
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if (globalThis.btoa || !isNodeJS) {
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return;
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}
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globalThis.btoa = function (chars) {
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// eslint-disable-next-line no-undef
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return Buffer.from(chars, "binary").toString("base64");
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};
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})();
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// Support: Node.js
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(function checkNodeAtob() {
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if (globalThis.atob || !isNodeJS) {
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return;
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}
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globalThis.atob = function (input) {
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// eslint-disable-next-line no-undef
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return Buffer.from(input, "base64").toString("binary");
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};
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})();
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// Support: Node.js
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(function checkDOMMatrix() {
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if (globalThis.DOMMatrix || !isNodeJS) {
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return;
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}
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globalThis.DOMMatrix = __non_webpack_require__(
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"dommatrix/dist/dommatrix.js"
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);
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})();
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// Support: Node.js
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(function checkReadableStream() {
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if (globalThis.ReadableStream || !isNodeJS) {
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return;
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}
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globalThis.ReadableStream = __non_webpack_require__(
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"web-streams-polyfill/dist/ponyfill.js"
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).ReadableStream;
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})();
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// Support: Firefox<90, Chrome<92, Safari<15.4, Node.js<16.6.0
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(function checkArrayAt() {
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if (Array.prototype.at) {
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return;
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}
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require("core-js/es/array/at.js");
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})();
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// Support: Firefox<90, Chrome<92, Safari<15.4, Node.js<16.6.0
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(function checkTypedArrayAt() {
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if (Uint8Array.prototype.at) {
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return;
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}
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require("core-js/es/typed-array/at.js");
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})();
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// Support: Firefox<94, Chrome<98, Safari<15.4, Node.js<17.0.0
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(function checkStructuredClone() {
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if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
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// The current image decoders are synchronous, hence `structuredClone`
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// shouldn't need to be polyfilled for the IMAGE_DECODERS build target.
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return;
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}
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if (globalThis.structuredClone) {
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return;
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}
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require("core-js/web/structured-clone.js");
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})();
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}
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