webpack/lib/EvalDevToolModuleTemplatePlugin.js

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

const RawSource = require("webpack-sources").RawSource;
const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
const cache = new WeakMap();

class EvalDevToolModuleTemplatePlugin {
	constructor(options) {
		this.sourceUrlComment = options.sourceUrlComment || "\n//# sourceURL=[url]";
		this.moduleFilenameTemplate = options.moduleFilenameTemplate || "webpack://[namespace]/[resourcePath]?[loaders]";
		this.namespace = options.namespace || "";
	}

	apply(moduleTemplate) {
		moduleTemplate.plugin("module", (source, module) => {
			const cacheEntry = cache.get(source);
			if(cacheEntry !== undefined) return cacheEntry;
			const content = source.source();
			const str = ModuleFilenameHelpers.createFilename(module, {
				moduleFilenameTemplate: this.moduleFilenameTemplate,
				namespace: this.namespace
			}, moduleTemplate.runtimeTemplate.requestShortener);
			const footer = ["\n",
				ModuleFilenameHelpers.createFooter(module, moduleTemplate.runtimeTemplate.requestShortener),
				this.sourceUrlComment.replace(/\[url\]/g, encodeURI(str).replace(/%2F/g, "/").replace(/%20/g, "_").replace(/%5E/g, "^").replace(/%5C/g, "\\").replace(/^\//, ""))
			].join("\n");
			const result = new RawSource(`eval(${JSON.stringify(content + footer)});`);
			cache.set(source, result);
			return result;
		});
		moduleTemplate.plugin("hash", hash => {
			hash.update("EvalDevToolModuleTemplatePlugin");
			hash.update("2");
		});
	}
}

module.exports = EvalDevToolModuleTemplatePlugin;