@zohodesk/client_build_tool/lib/shared/bundler/webpack/custom_plugins/MurphyInjectorPlugin/index.js

A CLI tool to build web applications and client libraries

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _SingleEntryPlugin = _interopRequireDefault(require("webpack/lib/SingleEntryPlugin.js"));

var _nameTemplates = require("../../common/nameTemplates");

var _htmlWebpackPlugin = _interopRequireDefault(require("html-webpack-plugin"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const pluginName = 'MurphyInjectorPlugin';

class MurphyInjectorPlugin {
  constructor(entries = [], options) {
    this.entries = entries;
    this.options = options;
    this.jsTemplate = options.cdnMapping.jsTemplate || '{{__JS_CDN__}}';
    this.cdnMapping = options.cdnMapping;
  }

  apply(compiler) {
    compiler.hooks.thisCompilation.tap(pluginName, compilation => {
      this.entries.forEach(({
        name,
        file
      }) => {
        // Create child compiler for this entry
        const childCompiler = compilation.createChildCompiler(`additional-entry ${name}`, {
          filename: (0, _nameTemplates.nameTemplates)('js', this.options),
          // output filename
          chunkFilename: `${name}.[id].js`,
          publicPath: compiler.options.output.publicPath,
          globalObject: "self" // safe for workers too

        }); // Attach the entry point

        new _SingleEntryPlugin.default(compiler.context, file, name).apply(childCompiler); // Run the child compiler

        childCompiler.runAsChild((err, entries, childCompilation) => {
          if (err) {
            compilation.errors.push(err);
            return;
          }

          if (childCompilation.errors && childCompilation.errors.length) {
            compilation.errors.push(...childCompilation.errors);
          } // Files are emitted automatically by child compiler
          // ⚡ Hook HtmlWebpackPlugin and inject this file


          _htmlWebpackPlugin.default.getHooks(compilation).alterAssetTags.tapAsync(pluginName, (data, cb) => {
            let fileName = '';
            const childFiles = childCompilation.entrypoints.get(name).getFiles();

            if (childFiles.length !== 1) {
              compilation.errors.push(new Error(`${pluginName}: Expected exactly 1 child file for entry "${name}", but got ${childFiles.length}.`));
            }

            if (this.cdnMapping.isCdnEnabled) {
              fileName = `${this.jsTemplate}${childFiles[0]}`;
            }

            ;
            data.assetTags.scripts.unshift({
              tagName: "script",
              voidTag: false,
              attributes: {
                src: fileName
              },
              meta: {
                plugin: pluginName
              }
            });
            cb(null, data);
          });
        });
      });
    });
  }

}

var _default = MurphyInjectorPlugin;
exports.default = _default;