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84 lines
3 KiB
Text
84 lines
3 KiB
Text
/*
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Copyright 2018 Google LLC
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Use of this source code is governed by an MIT-style
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license that can be found in the LICENSE file or at
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https://opensource.org/licenses/MIT.
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*/
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import fse from 'fs-extra';
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import upath from 'upath';
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import {WorkboxPackageJSON} from '../types';
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import {errors} from './errors';
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// Used to filter the libraries to copy based on our package.json dependencies.
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const WORKBOX_PREFIX = 'workbox-';
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// The directory within each package containing the final bundles.
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const BUILD_DIR = 'build';
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/**
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* This copies over a set of runtime libraries used by Workbox into a
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* local directory, which should be deployed alongside your service worker file.
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*
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* As an alternative to deploying these local copies, you could instead use
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* Workbox from its official CDN URL.
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*
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* This method is exposed for the benefit of developers using
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* {@link workbox-build.injectManifest} who would
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* prefer not to use the CDN copies of Workbox. Developers using
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* {@link workbox-build.generateSW} don't need to
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* explicitly call this method.
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*
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* @param {string} destDirectory The path to the parent directory under which
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* the new directory of libraries will be created.
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* @return {Promise<string>} The name of the newly created directory.
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*
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* @alias workbox-build.copyWorkboxLibraries
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*/
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export async function copyWorkboxLibraries(
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destDirectory: string,
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): Promise<string> {
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// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
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const thisPkg: WorkboxPackageJSON = require('../../package.json');
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// Use the version string from workbox-build in the name of the parent
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// directory. This should be safe, because lerna will bump workbox-build's
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// pkg.version whenever one of the dependent libraries gets bumped, and we
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// care about versioning the dependent libraries.
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const workboxDirectoryName = `workbox-v${
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thisPkg.version ? thisPkg.version : ''
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}`;
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const workboxDirectoryPath = upath.join(destDirectory, workboxDirectoryName);
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await fse.ensureDir(workboxDirectoryPath);
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const copyPromises: Array<Promise<void>> = [];
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const librariesToCopy = Object.keys(thisPkg.dependencies || {}).filter(
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(dependency) => dependency.startsWith(WORKBOX_PREFIX),
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);
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for (const library of librariesToCopy) {
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// Get the path to the package on the user's filesystem by require-ing
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// the package's `package.json` file via the node resolution algorithm.
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const libraryPath = upath.dirname(
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require.resolve(`${library}/package.json`),
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);
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const buildPath = upath.join(libraryPath, BUILD_DIR);
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// fse.copy() copies all the files in a directory, not the directory itself.
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// See https://github.com/jprichardson/node-fs-extra/blob/master/docs/copy.md#copysrc-dest-options-callback
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copyPromises.push(fse.copy(buildPath, workboxDirectoryPath));
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}
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try {
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await Promise.all(copyPromises);
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return workboxDirectoryName;
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} catch (error) {
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throw Error(
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`${errors['unable-to-copy-workbox-libraries']} ${
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error instanceof Error ? error.toString() : ''
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}`,
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);
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}
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}
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