1 files changed, 100 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/CachePlugin.js b/node_modules/webpack/lib/CachePlugin.js
new file mode 100644
index 0000000..68da003
--- /dev/null
+++ b/node_modules/webpack/lib/CachePlugin.js
@@ -0,0 +1,100 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const asyncLib = require("neo-async");
+
+class CachePlugin {
+	constructor(cache) {
+		this.cache = cache || {};
+		this.FS_ACCURACY = 2000;
+	}
+
+	apply(compiler) {
+		if (Array.isArray(compiler.compilers)) {
+			compiler.compilers.forEach((c, idx) => {
+				new CachePlugin((this.cache[idx] = this.cache[idx] || {})).apply(c);
+			});
+		} else {
+			const registerCacheToCompiler = (compiler, cache) => {
+				compiler.hooks.thisCompilation.tap("CachePlugin", compilation => {
+					compilation.cache = cache;
+					compilation.hooks.childCompiler.tap(
+						"CachePlugin",
+						(childCompiler, compilerName, compilerIndex) => {
+							let childCache;
+							if (!cache.children) {
+								cache.children = {};
+							}
+							if (!cache.children[compilerName]) {
+								cache.children[compilerName] = [];
+							}
+							if (cache.children[compilerName][compilerIndex]) {
+								childCache = cache.children[compilerName][compilerIndex];
+							} else {
+								cache.children[compilerName].push((childCache = {}));
+							}
+							registerCacheToCompiler(childCompiler, childCache);
+						}
+					);
+				});
+			};
+			registerCacheToCompiler(compiler, this.cache);
+			compiler.hooks.watchRun.tap("CachePlugin", () => {
+				this.watching = true;
+			});
+			compiler.hooks.run.tapAsync("CachePlugin", (compiler, callback) => {
+				if (!compiler._lastCompilationFileDependencies) {
+					return callback();
+				}
+				const fs = compiler.inputFileSystem;
+				const fileTs = (compiler.fileTimestamps = new Map());
+				asyncLib.forEach(
+					compiler._lastCompilationFileDependencies,
+					(file, callback) => {
+						fs.stat(file, (err, stat) => {
+							if (err) {
+								if (err.code === "ENOENT") return callback();
+								return callback(err);
+							}
+
+							if (stat.mtime) this.applyMtime(+stat.mtime);
+
+							fileTs.set(file, +stat.mtime || Infinity);
+
+							callback();
+						});
+					},
+					err => {
+						if (err) return callback(err);
+
+						for (const [file, ts] of fileTs) {
+							fileTs.set(file, ts + this.FS_ACCURACY);
+						}
+
+						callback();
+					}
+				);
+			});
+			compiler.hooks.afterCompile.tap("CachePlugin", compilation => {
+				compilation.compiler._lastCompilationFileDependencies =
+					compilation.fileDependencies;
+				compilation.compiler._lastCompilationContextDependencies =
+					compilation.contextDependencies;
+			});
+		}
+	}
+
+	/* istanbul ignore next */
+	applyMtime(mtime) {
+		if (this.FS_ACCURACY > 1 && mtime % 2 !== 0) this.FS_ACCURACY = 1;
+		else if (this.FS_ACCURACY > 10 && mtime % 20 !== 0) this.FS_ACCURACY = 10;
+		else if (this.FS_ACCURACY > 100 && mtime % 200 !== 0)
+			this.FS_ACCURACY = 100;
+		else if (this.FS_ACCURACY > 1000 && mtime % 2000 !== 0)
+			this.FS_ACCURACY = 1000;
+	}
+}
+module.exports = CachePlugin;