webpack/lib/runtime/RelativeUrlRuntimeModule.js

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports 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
*/

"use strict";

const RuntimeGlobals = require("../RuntimeGlobals");
const Template = require("../Template");
const HelperRuntimeModule = require("./HelperRuntimeModule");

/** @typedef {import("../Compilation")} Compilation */

class RelativeUrlRuntimeModule extends HelperRuntimeModule {
	constructor() {
		super("relative url");
	}

	/**
	 * @returns {string | null} runtime code
	 */
	generate() {
		const compilation = /** @type {Compilation} */ (this.compilation);
		const { runtimeTemplate } = compilation;
		return Template.asString([
			`${RuntimeGlobals.relativeUrl} = function RelativeURL(url) {`,
			Template.indent([
				'var realUrl = new URL(url, "x:/");',
				"var values = {};",
				"for (var key in realUrl) values[key] = realUrl[key];",
				"values.href = url;",
				'values.pathname = url.replace(/[?#].*/, "");',
				'values.origin = values.protocol = "";',
				`values.toString = values.toJSON = ${runtimeTemplate.returningFunction(
					"url"
				)};`,
				"for (var key in values) Object.defineProperty(this, key, { enumerable: true, configurable: true, value: values[key] });"
			]),
			"};",
			`${RuntimeGlobals.relativeUrl}.prototype = URL.prototype;`
		]);
	}
}

module.exports = RelativeUrlRuntimeModule;