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a0cf67d52f
Currently *all* users of `pdfjs-dist` are forced to install the `webpack` and `worker-loader` packages, despite the fact that they are *only* relevant if the `webpack.js` file is being used (with a custom Webpack build). This really doesn't seem great, especially since those packages are the only remaining dependencies in the `pdfjs-dist` library, and it thus seem more reasonable overall that Webpack users handle those dependencies themselves. To prevent unnecessarily cryptic runtime failures, when people update to newer `pdfjs-dist` versions, the `webpack.js` file was updated to explicitly check for the existence of the `worker-loader` package and error otherwise. Furthermore, note that `webpack` was only listed as a dependency because of the `worker-loader` package itself (see issue 9248). Obviously these changes may not be seen as great by Webpack users who rely on `pdfjs-dist`, since it forces them to handle the dependencies themselves, however it should improve things considerably for "general" users of `pdfjs-dist` by not burdening them with unnecessary dependencies. These sort of changes are also in line with other recent changes, see PR 11418, which removed built-in fake worker loader code for specific JS builders/bundlers/frameworks. This work was prompted not only by a desire to simplify/clean-up old code, but also to lessen future support burden since the PDF.js contributors cannot be assumed to be experts in various JS bundlers.
33 lines
1 KiB
JavaScript
33 lines
1 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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"use strict";
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try {
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require.resolve("worker-loader");
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} catch (ex) {
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throw new Error(
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"Cannot find the `worker-loader` package, please make sure that it's correctly installed."
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);
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}
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var pdfjs = require("./build/pdf.js");
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var PdfjsWorker = require("worker-loader!./build/pdf.worker.js");
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if (typeof window !== "undefined" && "Worker" in window) {
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pdfjs.GlobalWorkerOptions.workerPort = new PdfjsWorker();
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}
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module.exports = pdfjs;
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