mirror of
https://github.com/idanoo/GoScrobble.git
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86 lines
2.2 KiB
JavaScript
86 lines
2.2 KiB
JavaScript
"use strict";
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/*
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Copyright 2019 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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const ol = require('common-tags').oneLine;
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const upath = require('upath');
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/**
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* Class for keeping track of which Workbox modules are used by the generated
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* service worker script.
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*
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* @private
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*/
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class ModuleRegistry {
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/**
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* @private
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*/
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constructor() {
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this.modulesUsed = new Map();
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}
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/**
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* @return {Array<string>} A list of all of the import statements that are
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* needed for the modules being used.
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* @private
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*/
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getImportStatements() {
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const workboxModuleImports = [];
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for (const [localName, {
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moduleName,
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pkg
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}] of this.modulesUsed) {
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// By default require.resolve returns the resolved path of the 'main'
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// field, which might be deeper than the package root. To work around
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// this, we can find the package's root by resolving its package.json and
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// strip the '/package.json' from the resolved path.
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const pkgJsonPath = require.resolve(`${pkg}/package.json`);
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const pkgRoot = upath.dirname(pkgJsonPath);
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const importStatement = ol`import {${moduleName} as ${localName}} from
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'${pkgRoot}/${moduleName}.mjs';`;
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workboxModuleImports.push(importStatement);
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}
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return workboxModuleImports;
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}
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/**
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* @param {string} pkg The workbox package that the module belongs to.
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* @param {string} moduleName The name of the module to import.
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* @return {string} The local variable name that corresponds to that module.
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* @private
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*/
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getLocalName(pkg, moduleName) {
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return `${pkg.replace(/-/g, '_')}_${moduleName}`;
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}
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/**
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* @param {string} pkg The workbox package that the module belongs to.
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* @param {string} moduleName The name of the module to import.
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* @return {string} The local variable name that corresponds to that module.
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* @private
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*/
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use(pkg, moduleName) {
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const localName = this.getLocalName(pkg, moduleName);
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this.modulesUsed.set(localName, {
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moduleName,
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pkg
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});
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return localName;
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}
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}
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module.exports = ModuleRegistry; |