GoScrobble/web/node_modules/workbox-build/build/lib/copy-workbox-libraries.js

69 lines
2.8 KiB
JavaScript

"use strict";
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
const fse = require('fs-extra');
const upath = require('upath');
const errors = require('./errors'); // Used to filter the libraries to copy based on our package.json dependencies.
const WORKBOX_PREFIX = 'workbox-'; // The directory within each package containing the final bundles.
const BUILD_DIR = 'build';
/**
* This copies over a set of runtime libraries used by Workbox into a
* local directory, which should be deployed alongside your service worker file.
*
* As an alternative to deploying these local copies, you could instead use
* Workbox from its official CDN URL.
*
* This method is exposed for the benefit of developers using
* [injectManifest()]{@link module:workbox-build.injectManifest} who would
* prefer not to use the CDN copies of Workbox. Developers using
* [generateSW()]{@link module:workbox-build.generateSW} don't need to
* explicitly call this method.
*
* @param {string} destDirectory The path to the parent directory under which
* the new directory of libraries will be created.
* @return {Promise<string>} The name of the newly created directory.
*
* @alias module:workbox-build.copyWorkboxLibraries
*/
module.exports = async destDirectory => {
const thisPkg = require('../../package.json'); // Use the version string from workbox-build in the name of the parent
// directory. This should be safe, because lerna will bump workbox-build's
// pkg.version whenever one of the dependent libraries gets bumped, and we
// care about versioning the dependent libraries.
const workboxDirectoryName = `workbox-v${thisPkg.version}`;
const workboxDirectoryPath = upath.join(destDirectory, workboxDirectoryName);
await fse.ensureDir(workboxDirectoryPath);
const copyPromises = [];
const librariesToCopy = Object.keys(thisPkg.dependencies).filter(dependency => dependency.startsWith(WORKBOX_PREFIX));
for (const library of librariesToCopy) {
// Get the path to the package on the user's filesystem by require-ing
// the package's `package.json` file via the node resolution algorithm.
const libraryPath = upath.dirname(require.resolve(`${library}/package.json`));
const buildPath = upath.join(libraryPath, BUILD_DIR); // fse.copy() copies all the files in a directory, not the directory itself.
// See https://github.com/jprichardson/node-fs-extra/blob/master/docs/copy.md#copysrc-dest-options-callback
copyPromises.push(fse.copy(buildPath, workboxDirectoryPath));
}
try {
await Promise.all(copyPromises);
return workboxDirectoryName;
} catch (error) {
throw Error(`${errors['unable-to-copy-workbox-libraries']} ${error}`);
}
};