webpack/lib/json/JsonModulesPlugin.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 { validate } = require("schema-utils");
const memorize = require("../util/memorize");
const JsonGenerator = require("./JsonGenerator");
const JsonParser = require("./JsonParser");

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

const getParserSchema = memorize(() =>
	require("../../schemas/plugins/JsonModulesPluginParser.json")
);

class JsonModulesPlugin {
	/**
	 * Apply the plugin
	 * @param {Compiler} compiler the compiler instance
	 * @returns {void}
	 */
	apply(compiler) {
		compiler.hooks.compilation.tap(
			"JsonModulesPlugin",
			(compilation, { normalModuleFactory }) => {
				normalModuleFactory.hooks.createParser
					.for("json")
					.tap("JsonModulesPlugin", parserOptions => {
						validate(getParserSchema(), parserOptions, {
							name: "Json Modules Plugin",
							baseDataPath: "parser"
						});

						return new JsonParser(parserOptions);
					});
				normalModuleFactory.hooks.createGenerator
					.for("json")
					.tap("JsonModulesPlugin", () => {
						return new JsonGenerator();
					});
			}
		);
	}
}

module.exports = JsonModulesPlugin;