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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/webpack/lib/Watching.js
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Diffstat (limited to 'node_modules/webpack/lib/Watching.js')
-rw-r--r--node_modules/webpack/lib/Watching.js211
1 files changed, 211 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/Watching.js b/node_modules/webpack/lib/Watching.js
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+++ b/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;