NodeEnvironmentPlugin.js
a00ef2159c6ereact18

NodeEnvironmentPlugin.js
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			/*
			MIT License http://www.opensource.org/licenses/mit-license.php
			Author Tobias Koppers @sokra
			*/

			"use strict";

			const CachedInputFileSystem = require("enhanced-resolve/lib/CachedInputFileSystem");
			const fs = require("graceful-fs");
			const createConsoleLogger = require("../logging/createConsoleLogger");
			const NodeWatchFileSystem = require("./NodeWatchFileSystem");
			const nodeConsole = require("./nodeConsole");

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

			class NodeEnvironmentPlugin {
			constructor(options) {
			this.options = options \|\| {};
			}

			/**
			* Apply the plugin
			* @param {Compiler} compiler the compiler instance
			* @returns {void}
			*/
			apply(compiler) {
			compiler.infrastructureLogger = createConsoleLogger(
			Object.assign(
			{
			level: "info",
			debug: false,
			console: nodeConsole
			},
			this.options.infrastructureLogging
			)
			);
			compiler.inputFileSystem = new CachedInputFileSystem(fs, 60000);
			const inputFileSystem = compiler.inputFileSystem;
			compiler.outputFileSystem = fs;
			compiler.intermediateFileSystem = fs;
			compiler.watchFileSystem = new NodeWatchFileSystem(
			compiler.inputFileSystem
			);
			compiler.hooks.beforeRun.tap("NodeEnvironmentPlugin", compiler => {
			if (compiler.inputFileSystem === inputFileSystem) {
			inputFileSystem.purge();
			}
			});
			}
			}

			module.exports = NodeEnvironmentPlugin;