webpack/lib/HotUpdateChunkTemplate.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

const Template = require("./Template");
const HotUpdateChunk = require("./HotUpdateChunk");
const { Tapable, SyncWaterfallHook, SyncHook } = require("tapable");

module.exports = class HotUpdateChunkTemplate extends Tapable {
	constructor(outputOptions) {
		super();
		this.outputOptions = outputOptions || {};
		this.hooks = {
			modules: new SyncWaterfallHook([
				"source",
				"modules",
				"removedModules",
				"moduleTemplate",
				"dependencyTemplates"
			]),
			render: new SyncWaterfallHook([
				"source",
				"modules",
				"removedModules",
				"hash",
				"id",
				"moduleTemplate",
				"dependencyTemplates"
			]),
			hash: new SyncHook(["hash"])
		};
	}

	render(
		id,
		modules,
		removedModules,
		hash,
		moduleTemplate,
		dependencyTemplates
	) {
		const hotUpdateChunk = new HotUpdateChunk();
		hotUpdateChunk.id = id;
		hotUpdateChunk.setModules(modules);
		hotUpdateChunk.removedModules = removedModules;
		const modulesSource = Template.renderChunkModules(
			hotUpdateChunk,
			m => typeof m.source === "function",
			moduleTemplate,
			dependencyTemplates
		);
		const core = this.hooks.modules.call(
			modulesSource,
			modules,
			removedModules,
			moduleTemplate,
			dependencyTemplates
		);
		const source = this.hooks.render.call(
			core,
			modules,
			removedModules,
			hash,
			id,
			moduleTemplate,
			dependencyTemplates
		);
		return source;
	}

	updateHash(hash) {
		hash.update("HotUpdateChunkTemplate");
		hash.update("1");
		this.hooks.hash.call(hash);
	}
};