1 files changed, 136 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/WatchIgnorePlugin.js b/node_modules/webpack/lib/WatchIgnorePlugin.js
new file mode 100644
index 00000000..9dfdda97
--- /dev/null
+++ b/node_modules/webpack/lib/WatchIgnorePlugin.js
@@ -0,0 +1,136 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const { groupBy } = require("./util/ArrayHelpers");
+const createSchemaValidation = require("./util/create-schema-validation");
+
+/** @typedef {import("../declarations/plugins/WatchIgnorePlugin").WatchIgnorePluginOptions} WatchIgnorePluginOptions */
+/** @typedef {import("./Compiler")} Compiler */
+/** @typedef {import("./util/fs").WatchFileSystem} WatchFileSystem */
+
+const validate = createSchemaValidation(
+	require("../schemas/plugins/WatchIgnorePlugin.check.js"),
+	() => require("../schemas/plugins/WatchIgnorePlugin.json"),
+	{
+		name: "Watch Ignore Plugin",
+		baseDataPath: "options"
+	}
+);
+
+const IGNORE_TIME_ENTRY = "ignore";
+
+class IgnoringWatchFileSystem {
+	/**
+	 * @param {WatchFileSystem} wfs original file system
+	 * @param {(string|RegExp)[]} paths ignored paths
+	 */
+	constructor(wfs, paths) {
+		this.wfs = wfs;
+		this.paths = paths;
+	}
+
+	watch(files, dirs, missing, startTime, options, callback, callbackUndelayed) {
+		files = Array.from(files);
+		dirs = Array.from(dirs);
+		/**
+		 * @param {string} path path to check
+		 * @returns {boolean} true, if path is ignored
+		 */
+		const ignored = path =>
+			this.paths.some(p =>
+				p instanceof RegExp ? p.test(path) : path.indexOf(p) === 0
+			);
+
+		const [ignoredFiles, notIgnoredFiles] = groupBy(files, ignored);
+		const [ignoredDirs, notIgnoredDirs] = groupBy(dirs, ignored);
+
+		const watcher = this.wfs.watch(
+			notIgnoredFiles,
+			notIgnoredDirs,
+			missing,
+			startTime,
+			options,
+			(err, fileTimestamps, dirTimestamps, changedFiles, removedFiles) => {
+				if (err) return callback(err);
+				for (const path of ignoredFiles) {
+					fileTimestamps.set(path, IGNORE_TIME_ENTRY);
+				}
+
+				for (const path of ignoredDirs) {
+					dirTimestamps.set(path, IGNORE_TIME_ENTRY);
+				}
+
+				callback(
+					err,
+					fileTimestamps,
+					dirTimestamps,
+					changedFiles,
+					removedFiles
+				);
+			},
+			callbackUndelayed
+		);
+
+		return {
+			close: () => watcher.close(),
+			pause: () => watcher.pause(),
+			getContextTimeInfoEntries: () => {
+				const dirTimestamps = watcher.getContextTimeInfoEntries();
+				for (const path of ignoredDirs) {
+					dirTimestamps.set(path, IGNORE_TIME_ENTRY);
+				}
+				return dirTimestamps;
+			},
+			getFileTimeInfoEntries: () => {
+				const fileTimestamps = watcher.getFileTimeInfoEntries();
+				for (const path of ignoredFiles) {
+					fileTimestamps.set(path, IGNORE_TIME_ENTRY);
+				}
+				return fileTimestamps;
+			},
+			getInfo:
+				watcher.getInfo &&
+				(() => {
+					const info = watcher.getInfo();
+					const { fileTimeInfoEntries, contextTimeInfoEntries } = info;
+					for (const path of ignoredFiles) {
+						fileTimeInfoEntries.set(path, IGNORE_TIME_ENTRY);
+					}
+					for (const path of ignoredDirs) {
+						contextTimeInfoEntries.set(path, IGNORE_TIME_ENTRY);
+					}
+					return info;
+				})
+		};
+	}
+}
+
+class WatchIgnorePlugin {
+	/**
+	 * @param {WatchIgnorePluginOptions} options options
+	 */
+	constructor(options) {
+		validate(options);
+		this.paths = options.paths;
+	}
+
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		compiler.hooks.afterEnvironment.tap("WatchIgnorePlugin", () => {
+			compiler.watchFileSystem = new IgnoringWatchFileSystem(
+				compiler.watchFileSystem,
+				this.paths
+			);
+		});
+	}
+}
+
+module.exports = WatchIgnorePlugin;