настройка webpack

node_modules/webpack/lib/Watching.js

@@ -0,0 +1,211 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const Stats = require("./Stats");
+
+class Watching {
+	constructor(compiler, watchOptions, handler) {
+		this.startTime = null;
+		this.invalid = false;
+		this.handler = handler;
+		this.callbacks = [];
+		this.closed = false;
+		this.suspended = false;
+		if (typeof watchOptions === "number") {
+			this.watchOptions = {
+				aggregateTimeout: watchOptions
+			};
+		} else if (watchOptions && typeof watchOptions === "object") {
+			this.watchOptions = Object.assign({}, watchOptions);
+		} else {
+			this.watchOptions = {};
+		}
+		this.watchOptions.aggregateTimeout =
+			this.watchOptions.aggregateTimeout || 200;
+		this.compiler = compiler;
+		this.running = true;
+		this.compiler.readRecords(err => {
+			if (err) return this._done(err);
+
+			this._go();
+		});
+	}
+
+	_go() {
+		this.startTime = Date.now();
+		this.running = true;
+		this.invalid = false;
+		this.compiler.hooks.watchRun.callAsync(this.compiler, err => {
+			if (err) return this._done(err);
+			const onCompiled = (err, compilation) => {
+				if (err) return this._done(err);
+				if (this.invalid) return this._done();
+
+				if (this.compiler.hooks.shouldEmit.call(compilation) === false) {
+					return this._done(null, compilation);
+				}
+
+				this.compiler.emitAssets(compilation, err => {
+					if (err) return this._done(err);
+					if (this.invalid) return this._done();
+					this.compiler.emitRecords(err => {
+						if (err) return this._done(err);
+
+						if (compilation.hooks.needAdditionalPass.call()) {
+							compilation.needAdditionalPass = true;
+
+							const stats = new Stats(compilation);
+							stats.startTime = this.startTime;
+							stats.endTime = Date.now();
+							this.compiler.hooks.done.callAsync(stats, err => {
+								if (err) return this._done(err);
+
+								this.compiler.hooks.additionalPass.callAsync(err => {
+									if (err) return this._done(err);
+									this.compiler.compile(onCompiled);
+								});
+							});
+							return;
+						}
+						return this._done(null, compilation);
+					});
+				});
+			};
+			this.compiler.compile(onCompiled);
+		});
+	}
+
+	_getStats(compilation) {
+		const stats = new Stats(compilation);
+		stats.startTime = this.startTime;
+		stats.endTime = Date.now();
+		return stats;
+	}
+
+	_done(err, compilation) {
+		this.running = false;
+		if (this.invalid) return this._go();
+
+		const stats = compilation ? this._getStats(compilation) : null;
+		if (err) {
+			this.compiler.hooks.failed.call(err);
+			this.handler(err, stats);
+			return;
+		}
+		this.compiler.hooks.done.callAsync(stats, () => {
+			this.handler(null, stats);
+			if (!this.closed) {
+				this.watch(
+					Array.from(compilation.fileDependencies),
+					Array.from(compilation.contextDependencies),
+					Array.from(compilation.missingDependencies)
+				);
+			}
+			for (const cb of this.callbacks) cb();
+			this.callbacks.length = 0;
+		});
+	}
+
+	watch(files, dirs, missing) {
+		this.pausedWatcher = null;
+		this.watcher = this.compiler.watchFileSystem.watch(
+			files,
+			dirs,
+			missing,
+			this.startTime,
+			this.watchOptions,
+			(
+				err,
+				filesModified,
+				contextModified,
+				missingModified,
+				fileTimestamps,
+				contextTimestamps,
+				removedFiles
+			) => {
+				this.pausedWatcher = this.watcher;
+				this.watcher = null;
+				if (err) {
+					return this.handler(err);
+				}
+				this.compiler.fileTimestamps = fileTimestamps;
+				this.compiler.contextTimestamps = contextTimestamps;
+				this.compiler.removedFiles = removedFiles;
+				if (!this.suspended) {
+					this._invalidate();
+				}
+			},
+			(fileName, changeTime) => {
+				this.compiler.hooks.invalid.call(fileName, changeTime);
+			}
+		);
+	}
+
+	invalidate(callback) {
+		if (callback) {
+			this.callbacks.push(callback);
+		}
+		if (this.watcher) {
+			this.compiler.fileTimestamps = this.watcher.getFileTimestamps();
+			this.compiler.contextTimestamps = this.watcher.getContextTimestamps();
+		}
+		return this._invalidate();
+	}
+
+	_invalidate() {
+		if (this.watcher) {
+			this.pausedWatcher = this.watcher;
+			this.watcher.pause();
+			this.watcher = null;
+		}
+
+		if (this.running) {
+			this.invalid = true;
+			return false;
+		} else {
+			this._go();
+		}
+	}
+
+	suspend() {
+		this.suspended = true;
+		this.invalid = false;
+	}
+
+	resume() {
+		if (this.suspended) {
+			this.suspended = false;
+			this._invalidate();
+		}
+	}
+
+	close(callback) {
+		const finalCallback = () => {
+			this.compiler.hooks.watchClose.call();
+			this.compiler.running = false;
+			this.compiler.watchMode = false;
+			if (callback !== undefined) callback();
+		};
+
+		this.closed = true;
+		if (this.watcher) {
+			this.watcher.close();
+			this.watcher = null;
+		}
+		if (this.pausedWatcher) {
+			this.pausedWatcher.close();
+			this.pausedWatcher = null;
+		}
+		if (this.running) {
+			this.invalid = true;
+			this._done = finalCallback;
+		} else {
+			finalCallback();
+		}
+	}
+}
+
+module.exports = Watching;