3e625994bd
Currently the compatibility-file is loaded using a standard `import`-statement and while its code is enclosed in a pre-processor block, and thus is excluded in e.g. the MOZCENTRAL build-target, it still results in the *built* `pdf.js`/`pdf.worker.js` files having an effectively empty closure as a result. By moving the checks from `src/shared/compatibility.js` and into `src/shared/util.js` instead, we can load the file using a build-time `require`-statement and thus avoid that closure. Note that with these changes the compatibility-file will no longer be loaded in development mode, i.e. when `gulp server` is used. However, this shouldn't be a big issue given that none of its included polyfills could be loaded then anyway (since `require`-statements are being used) and that it's really only intended for the `legacy`-builds of the library.
87 lines
2.4 KiB
JavaScript
87 lines
2.4 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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// Support: Node.js<16.0.0
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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<16.0.0
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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__("canvas").DOMMatrix;
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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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