pdf.js/src/shared/compatibility.js
Jonas Jenwald 57a307d0cd Update the Node.js compatibility-check in the worker-thread
*Please note:* In Node.js environments a `legacy`-build must be used since only those versions include any polyfills.

Previously we'd only check if `ReadableStream` is natively supported, however since Node.js version 18 that's now been implemented; please see https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream#browser_compatibility
Hence we'll also check for the availability of `Path2D`, since that's browser-specific functionality not expected to be available in Node.js environments; please see https://developer.mozilla.org/en-US/docs/Web/API/Path2D#browser_compatibility
2023-03-30 18:36:15 +02:00

77 lines
2.2 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.
*/
/* globals __non_webpack_require__ */
import { isNodeJS } from "./is_node.js";
// Support: Node.js
(function checkDOMMatrix() {
if (globalThis.DOMMatrix || !isNodeJS) {
return;
}
globalThis.DOMMatrix = __non_webpack_require__("canvas").DOMMatrix;
})();
// Support: Node.js
(function checkPath2D() {
if (globalThis.Path2D || !isNodeJS) {
return;
}
const { CanvasRenderingContext2D } = __non_webpack_require__("canvas");
const { polyfillPath2D } = __non_webpack_require__("path2d-polyfill");
globalThis.CanvasRenderingContext2D = CanvasRenderingContext2D;
polyfillPath2D(globalThis);
})();
// Support: Node.js<18.0.0
(function checkReadableStream() {
if (globalThis.ReadableStream || !isNodeJS) {
return;
}
globalThis.ReadableStream = __non_webpack_require__(
"web-streams-polyfill/dist/ponyfill.js"
).ReadableStream;
})();
// Support: Firefox<90, Chrome<92, Safari<15.4, Node.js<16.6.0
(function checkArrayAt() {
if (Array.prototype.at) {
return;
}
require("core-js/es/array/at.js");
})();
// Support: Firefox<90, Chrome<92, Safari<15.4, Node.js<16.6.0
(function checkTypedArrayAt() {
if (Uint8Array.prototype.at) {
return;
}
require("core-js/es/typed-array/at.js");
})();
// Support: Firefox<94, Chrome<98, Safari<15.4, Node.js<17.0.0
(function checkStructuredClone() {
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
// The current image decoders are synchronous, hence `structuredClone`
// shouldn't need to be polyfilled for the IMAGE_DECODERS build target.
return;
}
if (globalThis.structuredClone) {
return;
}
require("core-js/web/structured-clone.js");
})();