diff --git a/lib/FileSystemInfo.js b/lib/FileSystemInfo.js
index 2f96cc10c..b65ab0bba 100644
--- a/lib/FileSystemInfo.js
+++ b/lib/FileSystemInfo.js
@@ -84,6 +84,136 @@ class FileSystemInfo {
 		this.contextTimestampQueue.add(path, callback);
 	}
 
+	createSnapshot(startTime, files, directories, missing, options, callback) {
+		const fileTimestamps = new Map();
+		const contextTimestamps = new Map();
+		const missingTimestamps = new Map();
+		let jobs = 1;
+		const jobDone = () => {
+			if (--jobs === 0) {
+				callback(null, {
+					startTime,
+					fileTimestamps,
+					contextTimestamps,
+					missingTimestamps
+				});
+			}
+		};
+		for (const path of files) {
+			const cache = this._fileTimestamps.get(path);
+			if (cache !== undefined) {
+				fileTimestamps.set(path, cache);
+			} else {
+				jobs++;
+				this.fileTimestampQueue.add(path, (err, entry) => {
+					if (err) {
+						fileTimestamps.set(path, "error");
+					} else {
+						fileTimestamps.set(path, entry);
+					}
+					jobDone();
+				});
+			}
+		}
+		for (const path of directories) {
+			contextTimestamps.set(path, "error");
+			// TODO: getContextTimestamp is not implemented yet
+		}
+		for (const path of missing) {
+			const cache = this._fileTimestamps.get(path);
+			if (cache !== undefined) {
+				missingTimestamps.set(path, cache);
+			} else {
+				jobs++;
+				this.fileTimestampQueue.add(path, (err, entry) => {
+					if (err) {
+						missingTimestamps.set(path, "error");
+					} else {
+						missingTimestamps.set(path, entry);
+					}
+					jobDone();
+				});
+			}
+		}
+		jobDone();
+	}
+
+	checkSnapshotValid(snapshot, callback) {
+		const {
+			startTime,
+			fileTimestamps,
+			contextTimestamps,
+			missingTimestamps
+		} = snapshot;
+		let jobs = 1;
+		const jobDone = () => {
+			if (--jobs === 0) {
+				callback(null, true);
+			}
+		};
+		const invalid = () => {
+			if (jobs > 0) {
+				jobs = NaN;
+				callback(null, false);
+			}
+		};
+		const checkExistance = (current, snap) => {
+			if (snap === "error") {
+				return current && current.safeTime <= startTime;
+			}
+			return !current === !snap;
+		};
+		const checkFile = (current, snap) => {
+			if (snap === "error") {
+				return current && current.safeTime <= startTime;
+			}
+			if (!current !== !snap) return false;
+			if (current && current.timestamp) {
+				return current.timestamp === snap.timestamp;
+			}
+			return !current;
+		};
+		for (const [path, ts] of fileTimestamps) {
+			const cache = this._fileTimestamps.get(path);
+			if (cache !== undefined) {
+				if (!checkFile(cache, ts)) {
+					invalid();
+				}
+			} else {
+				jobs++;
+				this.fileTimestampQueue.add(path, (err, entry) => {
+					if (!checkFile(entry, ts)) {
+						invalid();
+					} else {
+						jobDone();
+					}
+				});
+			}
+		}
+		if (contextTimestamps.size > 0) {
+			// TODO: getContextTimestamp is not implemented yet
+			invalid();
+		}
+		for (const [path, ts] of missingTimestamps) {
+			const cache = this._fileTimestamps.get(path);
+			if (cache !== undefined) {
+				if (!checkExistance(cache, ts)) {
+					invalid();
+				}
+			} else {
+				jobs++;
+				this.fileTimestampQueue.add(path, (err, entry) => {
+					if (!checkExistance(entry, ts)) {
+						invalid();
+					} else {
+						jobDone();
+					}
+				});
+			}
+		}
+		jobDone();
+	}
+
 	// TODO getFileHash(path, callback)
 
 	_readFileTimestamp(path, callback) {
@@ -101,7 +231,7 @@ class FileSystemInfo {
 			const mtime = +stat.mtime || Infinity;
 			const ts = {
 				safeTime: mtime + FS_ACCURACY,
-				timestamp: mtime
+				timestamp: stat.isFile() ? mtime : undefined
 			};
 
 			this._fileTimestamps.set(path, ts);
diff --git a/lib/WatchIgnorePlugin.js b/lib/WatchIgnorePlugin.js
index b73fc46e9..b295590c5 100644
--- a/lib/WatchIgnorePlugin.js
+++ b/lib/WatchIgnorePlugin.js
@@ -34,15 +34,7 @@ class IgnoringWatchFileSystem {
 			missing,
 			startTime,
 			options,
-			(
-				err,
-				filesModified,
-				dirsModified,
-				missingModified,
-				fileTimestamps,
-				dirTimestamps,
-				removedFiles
-			) => {
+			(err, fileTimestamps, dirTimestamps, removedFiles) => {
 				if (err) return callback(err);
 				for (const path of ignoredFiles) {
 					fileTimestamps.set(path, 1);
@@ -52,15 +44,7 @@ class IgnoringWatchFileSystem {
 					dirTimestamps.set(path, 1);
 				}
 
-				callback(
-					err,
-					filesModified,
-					dirsModified,
-					missingModified,
-					fileTimestamps,
-					dirTimestamps,
-					removedFiles
-				);
+				callback(err, fileTimestamps, dirTimestamps, removedFiles);
 			},
 			callbackUndelayed
 		);
@@ -68,15 +52,15 @@ class IgnoringWatchFileSystem {
 		return {
 			close: () => watcher.close(),
 			pause: () => watcher.pause(),
-			getContextTimestamps: () => {
-				const dirTimestamps = watcher.getContextTimestamps();
+			getContextInfoEntries: () => {
+				const dirTimestamps = watcher.getContextInfoEntries();
 				for (const path of ignoredDirs) {
 					dirTimestamps.set(path, 1);
 				}
 				return dirTimestamps;
 			},
-			getFileTimestamps: () => {
-				const fileTimestamps = watcher.getFileTimestamps();
+			getFileTimeInfoEntries: () => {
+				const fileTimestamps = watcher.getFileTimeInfoEntries();
 				for (const path of ignoredFiles) {
 					fileTimestamps.set(path, 1);
 				}
diff --git a/lib/Watching.js b/lib/Watching.js
index 235c3eb56..826535c4c 100644
--- a/lib/Watching.js
+++ b/lib/Watching.js
@@ -19,15 +19,6 @@ const Stats = require("./Stats");
  * @param {T=} result
  */
 
-// TODO refactor watchpack to report timestamps in the correct format
-const toFileSystemInfoEntryMap = timestamps => {
-	const map = new Map();
-	for (const [key, ts] of timestamps) {
-		map.set(key, ts ? { safeTime: ts } : null);
-	}
-	return map;
-};
-
 class Watching {
 	/**
 	 * @param {Compiler} compiler the compiler
@@ -164,24 +155,14 @@ class Watching {
 			missing,
 			this.startTime,
 			this.watchOptions,
-			(
-				err,
-				filesModified,
-				contextModified,
-				missingModified,
-				fileTimestamps,
-				contextTimestamps,
-				removedFiles
-			) => {
+			(err, fileTimeInfoEntries, contextTimeInfoEntries, removedFiles) => {
 				this.pausedWatcher = this.watcher;
 				this.watcher = null;
 				if (err) {
 					return this.handler(err);
 				}
-				this.compiler.fileTimestamps = toFileSystemInfoEntryMap(fileTimestamps);
-				this.compiler.contextTimestamps = toFileSystemInfoEntryMap(
-					contextTimestamps
-				);
+				this.compiler.fileTimestamps = fileTimeInfoEntries;
+				this.compiler.contextTimestamps = contextTimeInfoEntries;
 				this.compiler.removedFiles = removedFiles;
 				this._invalidate();
 			},
@@ -200,12 +181,8 @@ class Watching {
 			this.callbacks.push(callback);
 		}
 		if (this.watcher) {
-			this.compiler.fileTimestamps = toFileSystemInfoEntryMap(
-				this.watcher.getFileTimestamps()
-			);
-			this.compiler.contextTimestamps = toFileSystemInfoEntryMap(
-				this.watcher.getContextTimestamps()
-			);
+			this.compiler.fileTimestamps = this.watcher.getFileTimeInfoEntries();
+			this.compiler.contextTimestamps = this.watcher.getContextTimeInfoEntries();
 		}
 		this._invalidate();
 	}
diff --git a/lib/cache/ResolverCachePlugin.js b/lib/cache/ResolverCachePlugin.js
index e43cb1ee8..7cccbe07c 100644
--- a/lib/cache/ResolverCachePlugin.js
+++ b/lib/cache/ResolverCachePlugin.js
@@ -5,14 +5,10 @@
 
 "use strict";
 
-const asyncLib = require("neo-async");
-
 /** @typedef {import("enhanced-resolve/lib/Resolver")} Resolver */
 /** @typedef {import("../Compiler")} Compiler */
 /** @typedef {import("../FileSystemInfo")} FileSystemInfo */
 
-const INVALID = {};
-
 const requestToString = request => {
 	let str = "";
 	for (const key in request) {
@@ -76,69 +72,37 @@ class ResolverCachePlugin {
 					propagate("fileDependencies");
 					propagate("contextDependencies");
 					if (err) return callback(err);
-					const fileDependencies = new Set(newResolveContext.fileDependencies);
-					if (newResolveContext.missing) {
-						for (const missing of newResolveContext.missing) {
-							fileDependencies.add(missing);
-						}
-					}
-					const contextDependencies = new Set(
-						newResolveContext.contextDependencies
-					);
+					const fileDependencies = newResolveContext.fileDependencies;
+					const contextDependencies = newResolveContext.contextDependencies;
+					const missingDependencies = newResolveContext.missing;
 					// TODO remove this when enhanced-resolve supports fileDependencies
 					if (result && result.path) {
 						fileDependencies.add(result.path);
 					}
-					const fileTimestamps = new Map();
-					const contextTimestamps = new Map();
-					const store = () => {
-						cache.store(
-							identifier,
-							null,
-							{
-								result,
-								resolveTime,
-								fileTimestamps,
-								contextTimestamps
-							},
-							restoreErr => {
-								if (restoreErr) return callback(restoreErr);
-								if (result) return callback(null, result);
-								callback();
-							}
-						);
-					};
-					asyncLib.parallel(
-						[
-							asyncLib.each.bind(
-								asyncLib,
-								fileDependencies,
-								(dep, callback) => {
-									fileSystemInfo.getFileTimestamp(dep, (err, entry) => {
-										if (err) {
-											fileTimestamps.set(dep, "error");
-										} else {
-											fileTimestamps.set(dep, entry && entry.timestamp);
-										}
-										callback();
-									});
-								}
-							),
-							asyncLib.each.bind(
-								asyncLib,
-								contextDependencies,
-								(dep, callback) => {
-									fileSystemInfo.getContextTimestamp(dep, (err, entry) => {
-										contextTimestamps.set(dep, "error");
-										// TODO: getContextTimestamp is not implemented yet
-										callback();
-									});
-								}
-							)
-						],
-						err => {
+					fileSystemInfo.createSnapshot(
+						resolveTime,
+						fileDependencies,
+						contextDependencies,
+						missingDependencies,
+						null,
+						(err, snapshot) => {
 							if (err) return callback(err);
-							store();
+							cache.store(
+								identifier,
+								null,
+								{
+									result,
+									missing: newResolveContext.missing,
+									fileDependencies: newResolveContext.fileDependencies,
+									contextDependencies: newResolveContext.contextDependencies,
+									snapshot
+								},
+								storeErr => {
+									if (storeErr) return callback(storeErr);
+									if (result) return callback(null, result);
+									callback();
+								}
+							);
 						}
 					);
 				}
@@ -167,73 +131,14 @@ class ResolverCachePlugin {
 								const identifier = `/resolve/${type}${requestToString(
 									request
 								)}`;
-								cache.get(identifier, null, (err, cacheEntry) => {
+								const processCacheResult = (err, cacheEntry) => {
 									if (err) return callback(err);
 
 									if (cacheEntry) {
-										const {
-											result,
-											resolveTime,
-											fileTimestamps,
-											contextTimestamps
-										} = cacheEntry;
-										asyncLib.parallel(
-											[
-												asyncLib.each.bind(
-													asyncLib,
-													fileTimestamps,
-													([dep, ts], callback) => {
-														fileSystemInfo.getFileTimestamp(
-															dep,
-															(err, entry) => {
-																if (err) return callback(err);
-																if (ts === "error") {
-																	return callback(
-																		!entry || entry.safeTime > resolveTime
-																			? INVALID
-																			: null
-																	);
-																}
-																if (!entry !== !ts) return callback(INVALID);
-																if (entry && entry.timestamp) {
-																	return callback(
-																		entry.timestamp !== ts ? INVALID : null
-																	);
-																}
-																callback();
-															}
-														);
-													}
-												),
-												asyncLib.each.bind(
-													asyncLib,
-													contextTimestamps,
-													([dep, ts], callback) => {
-														fileSystemInfo.getContextTimestamp(
-															dep,
-															(err, entry) => {
-																if (err) return callback(err);
-																if (ts === "error") {
-																	return callback(
-																		!entry || entry.safeTime > resolveTime
-																			? INVALID
-																			: null
-																	);
-																}
-																if (!entry !== !ts) return callback(INVALID);
-																if (entry && entry.timestamp) {
-																	return callback(
-																		entry.timestamp !== ts ? INVALID : null
-																	);
-																}
-																callback();
-															}
-														);
-													}
-												)
-											],
-											err => {
-												if (err) {
+										fileSystemInfo.checkSnapshotValid(
+											cacheEntry.snapshot,
+											(err, valid) => {
+												if (err || !valid) {
 													return doRealResolve(
 														identifier,
 														type,
@@ -243,7 +148,22 @@ class ResolverCachePlugin {
 														callback
 													);
 												}
-												callback(null, result);
+												if (resolveContext.missing) {
+													for (const item of cacheEntry.missing) {
+														resolveContext.missing.add(item);
+													}
+												}
+												if (resolveContext.fileDependencies) {
+													for (const item of cacheEntry.fileDependencies) {
+														resolveContext.fileDependencies.add(item);
+													}
+												}
+												if (resolveContext.contextDependencies) {
+													for (const item of cacheEntry.contextDependencies) {
+														resolveContext.contextDependencies.add(item);
+													}
+												}
+												callback(null, cacheEntry.result);
 											}
 										);
 									} else {
@@ -256,7 +176,8 @@ class ResolverCachePlugin {
 											callback
 										);
 									}
-								});
+								};
+								cache.get(identifier, null, processCacheResult);
 							}
 						);
 					}
diff --git a/lib/node/NodeWatchFileSystem.js b/lib/node/NodeWatchFileSystem.js
index 37adf17b4..05b7d1d3b 100644
--- a/lib/node/NodeWatchFileSystem.js
+++ b/lib/node/NodeWatchFileSystem.js
@@ -6,7 +6,6 @@
 "use strict";
 
 const Watchpack = require("watchpack");
-const objectToMap = require("../util/objectToMap");
 
 class NodeWatchFileSystem {
 	constructor(inputFileSystem) {
@@ -48,24 +47,16 @@ class NodeWatchFileSystem {
 		const cachedFiles = files;
 		const cachedDirs = dirs;
 		this.watcher.once("aggregated", (changes, removals) => {
-			changes = changes.concat(removals);
 			if (this.inputFileSystem && this.inputFileSystem.purge) {
-				this.inputFileSystem.purge(changes);
+				for (const item of changes) {
+					this.inputFileSystem.purge(item);
+				}
+				for (const item of removals) {
+					this.inputFileSystem.purge(item);
+				}
 			}
-			const times = objectToMap(this.watcher.getTimes());
-			files = new Set(files);
-			dirs = new Set(dirs);
-			missing = new Set(missing);
-			removals = new Set(removals.filter(file => files.has(file)));
-			callback(
-				null,
-				changes.filter(file => files.has(file)).sort(),
-				changes.filter(file => dirs.has(file)).sort(),
-				changes.filter(file => missing.has(file)).sort(),
-				times,
-				times,
-				removals
-			);
+			const times = this.watcher.getTimeInfoEntries();
+			callback(null, times, times, removals);
 		});
 
 		this.watcher.watch(cachedFiles.concat(missing), cachedDirs, startTime);
@@ -85,16 +76,16 @@ class NodeWatchFileSystem {
 					this.watcher.pause();
 				}
 			},
-			getFileTimestamps: () => {
+			getFileTimeInfoEntries: () => {
 				if (this.watcher) {
-					return objectToMap(this.watcher.getTimes());
+					return this.watcher.getTimeInfoEntries();
 				} else {
 					return new Map();
 				}
 			},
-			getContextTimestamps: () => {
+			getContextInfoEntries: () => {
 				if (this.watcher) {
-					return objectToMap(this.watcher.getTimes());
+					return this.watcher.getTimeInfoEntries();
 				} else {
 					return new Map();
 				}
diff --git a/package.json b/package.json
index 38714fc85..8897100e1 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "schema-utils": "^0.4.4",
     "tapable": "^1.1.0",
     "terser-webpack-plugin": "^1.2.1",
-    "watchpack": "^1.5.0",
+    "watchpack": "2.0.0-beta.2",
     "webpack-sources": "^1.3.0"
   },
   "devDependencies": {
diff --git a/test/TestCases.template.js b/test/TestCases.template.js
index f1e32e6d6..d3454e6c8 100644
--- a/test/TestCases.template.js
+++ b/test/TestCases.template.js
@@ -181,12 +181,16 @@ const describeCases = config => {
 								rimraf(cacheDirectory, done);
 							});
 							if (config.cache) {
-								it(`${testName} should pre-compile to fill disk cache`, done => {
-									const compiler = webpack(options, err => {
+								it(`${testName} should pre-compile to fill disk cache (1st)`, done => {
+									webpack(options, err => {
 										if (err) return done(err);
-										compiler.close(() => {
-											done();
-										});
+										done();
+									});
+								});
+								it(`${testName} should pre-compile to fill disk cache (2nd)`, done => {
+									webpack(options, err => {
+										if (err) return done(err);
+										done();
 									});
 								});
 							}
diff --git a/yarn.lock b/yarn.lock
index c85794c17..58c811dff 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -550,11 +550,6 @@ astral-regex@^1.0.0:
   resolved "https://registry.yarnpkg.com/astral-regex/-/astral-regex-1.0.0.tgz#6c8c3fb827dd43ee3918f27b82782ab7658a6fd9"
   integrity sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg==
 
-async-each@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
-  integrity sha1-GdOGodntxufByF04iu28xW0zYC0=
-
 async-limiter@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
@@ -839,11 +834,6 @@ big.js@^3.1.3:
   resolved "https://registry.yarnpkg.com/big.js/-/big.js-3.2.0.tgz#a5fc298b81b9e0dca2e458824784b65c52ba588e"
   integrity sha512-+hN/Zh2D08Mx65pZ/4g5bsmNiZUuChDiQfTUQ7qJr4/kuopCr88xZsAXv6mBoZEsUI4OuGHlX59qE94K2mMW8Q==
 
-binary-extensions@^1.0.0:
-  version "1.11.0"
-  resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.11.0.tgz#46aa1751fb6a2f93ee5e689bb1087d4b14c6c205"
-  integrity sha1-RqoXUftqL5PuXmibsQh9SxTGwgU=
-
 bluebird@^3.5.0, bluebird@^3.5.x:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
@@ -878,7 +868,7 @@ braces@^1.8.2:
     preserve "^0.2.0"
     repeat-element "^1.1.2"
 
-braces@^2.3.0, braces@^2.3.1:
+braces@^2.3.1:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/braces/-/braces-2.3.2.tgz#5979fd3f14cd531565e5fa2df1abfff1dfaee729"
   integrity sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==
@@ -1081,25 +1071,6 @@ chardet@^0.7.0:
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
   integrity sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==
 
-chokidar@^2.0.2:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-2.0.3.tgz#dcbd4f6cbb2a55b4799ba8a840ac527e5f4b1176"
-  integrity sha512-zW8iXYZtXMx4kux/nuZVXjkLP+CyIK5Al5FHnj1OgTKGZfp4Oy6/ymtMSKFv3GD8DviEmUPmJg9eFdJ/JzudMg==
-  dependencies:
-    anymatch "^2.0.0"
-    async-each "^1.0.0"
-    braces "^2.3.0"
-    glob-parent "^3.1.0"
-    inherits "^2.0.1"
-    is-binary-path "^1.0.0"
-    is-glob "^4.0.0"
-    normalize-path "^2.1.1"
-    path-is-absolute "^1.0.0"
-    readdirp "^2.0.0"
-    upath "^1.0.0"
-  optionalDependencies:
-    fsevents "^1.1.2"
-
 chownr@^1.0.1, chownr@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.1.tgz#54726b8b8fff4df053c42187e801fb4412df1494"
@@ -2555,14 +2526,6 @@ fs.realpath@^1.0.0:
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
   integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
 
-fsevents@^1.1.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-1.2.2.tgz#4f598f0f69b273188ef4a62ca4e9e08ace314bbf"
-  integrity sha512-iownA+hC4uHFp+7gwP/y5SzaiUo7m2vpa0dhpzw8YuKtiZsz7cIXsFbXpLEeBM6WuCQyw1MH4RRe6XI8GFUctQ==
-  dependencies:
-    nan "^2.9.2"
-    node-pre-gyp "^0.9.0"
-
 fsevents@^1.2.3:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-1.2.4.tgz#f41dcb1af2582af3692da36fc55cbd8e1041c426"
@@ -2658,14 +2621,6 @@ glob-parent@^2.0.0:
   dependencies:
     is-glob "^2.0.0"
 
-glob-parent@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-3.1.0.tgz#9e6af6299d8d3bd2bd40430832bd113df906c5ae"
-  integrity sha1-nmr2KZ2NO9K9QEMIMr0RPfkGxa4=
-  dependencies:
-    is-glob "^3.1.0"
-    path-dirname "^1.0.0"
-
 glob@^5.0.15:
   version "5.0.15"
   resolved "https://registry.yarnpkg.com/glob/-/glob-5.0.15.tgz#1bc936b9e02f4a603fcc222ecf7633d30b8b93b1"
@@ -3094,13 +3049,6 @@ is-arrayish@^0.2.1:
   resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
   integrity sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=
 
-is-binary-path@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-1.0.1.tgz#75f16642b480f187a711c814161fd3a4a7655898"
-  integrity sha1-dfFmQrSA8YenEcgUFh/TpKdlWJg=
-  dependencies:
-    binary-extensions "^1.0.0"
-
 is-buffer@^1.1.5:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
@@ -3211,7 +3159,7 @@ is-extglob@^1.0.0:
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-1.0.0.tgz#ac468177c4943405a092fc8f29760c6ffc6206c0"
   integrity sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=
 
-is-extglob@^2.1.0, is-extglob@^2.1.1:
+is-extglob@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
   integrity sha1-qIwCU1eR8C7TfHahueqXc8gz+MI=
@@ -3247,13 +3195,6 @@ is-glob@^2.0.0, is-glob@^2.0.1:
   dependencies:
     is-extglob "^1.0.0"
 
-is-glob@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-3.1.0.tgz#7ba5ae24217804ac70707b96922567486cc3e84a"
-  integrity sha1-e6WuJCF4BKxwcHuWkiVnSGzD6Eo=
-  dependencies:
-    is-extglob "^2.1.0"
-
 is-glob@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.0.tgz#9521c76845cc2610a85203ddf080a958c2ffabc0"
@@ -4697,7 +4638,7 @@ mimic-fn@^1.0.0:
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
   integrity sha512-jf84uxzwiuiIVKiOLpfYk7N46TSy8ubTonmneY9vrpHNAnp0QBt2BxWV9dO3/j+BoVAb+a5G6YDPW3M5HOdMWQ==
 
-"minimatch@2 || 3", minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
+"minimatch@2 || 3", minimatch@^3.0.3, minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
@@ -4828,7 +4769,7 @@ natural-compare@^1.4.0:
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
   integrity sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=
 
-needle@^2.2.0, needle@^2.2.1:
+needle@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/needle/-/needle-2.2.1.tgz#b5e325bd3aae8c2678902fa296f729455d1d3a7d"
   integrity sha512-t/ZswCM9JTWjAdXS9VpvqhI2Ct2sL2MdY4fUXqGJaGBk13ge99ObqRksRTbBE56K+wxUXwwfZYOuZHifFW9q+Q==
@@ -4891,22 +4832,6 @@ node-pre-gyp@^0.10.0:
     semver "^5.3.0"
     tar "^4"
 
-node-pre-gyp@^0.9.0:
-  version "0.9.1"
-  resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.9.1.tgz#f11c07516dd92f87199dbc7e1838eab7cd56c9e0"
-  integrity sha1-8RwHUW3ZL4cZnbx+GDjqt81WyeA=
-  dependencies:
-    detect-libc "^1.0.2"
-    mkdirp "^0.5.1"
-    needle "^2.2.0"
-    nopt "^4.0.1"
-    npm-packlist "^1.1.6"
-    npmlog "^4.0.2"
-    rc "^1.1.7"
-    rimraf "^2.6.1"
-    semver "^5.3.0"
-    tar "^4"
-
 nopt@3.x:
   version "3.0.6"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
@@ -5249,11 +5174,6 @@ pascalcase@^0.1.1:
   resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"
   integrity sha1-s2PlXoAGym/iF4TS2yK9FdeRfxQ=
 
-path-dirname@^1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/path-dirname/-/path-dirname-1.0.2.tgz#cc33d24d525e099a5388c0336c6e32b9160609e0"
-  integrity sha1-zDPSTVJeCZpTiMAzbG4yuRYGCeA=
-
 path-exists@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-2.1.0.tgz#0feb6c64f0fc518d9a754dd5efb62c7022761f4b"
@@ -5946,7 +5866,7 @@ raw-loader@~0.5.0, raw-loader@~0.5.1:
   resolved "https://registry.yarnpkg.com/raw-loader/-/raw-loader-0.5.1.tgz#0c3d0beaed8a01c966d9787bf778281252a979aa"
   integrity sha1-DD0L6u2KAclm2Xh793goElKpeao=
 
-rc@^1.1.7, rc@^1.2.7:
+rc@^1.2.7:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
   integrity sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==
@@ -6003,7 +5923,7 @@ read-pkg@^4.0.1:
     parse-json "^4.0.0"
     pify "^3.0.0"
 
-"readable-stream@1 || 2", readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.4, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@~2.3.6:
+"readable-stream@1 || 2", readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.4, readable-stream@^2.0.6, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@~2.3.6:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
   integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
@@ -6016,16 +5936,6 @@ read-pkg@^4.0.1:
     string_decoder "~1.1.1"
     util-deprecate "~1.0.1"
 
-readdirp@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-2.1.0.tgz#4ed0ad060df3073300c48440373f72d1cc642d78"
-  integrity sha1-TtCtBg3zBzMAxIRANz9y0cxkLXg=
-  dependencies:
-    graceful-fs "^4.1.2"
-    minimatch "^3.0.2"
-    readable-stream "^2.0.2"
-    set-immediate-shim "^1.0.1"
-
 realpath-native@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/realpath-native/-/realpath-native-1.0.1.tgz#07f40a0cce8f8261e2e8b7ebebf5c95965d7b633"
@@ -6458,11 +6368,6 @@ set-blocking@^2.0.0, set-blocking@~2.0.0:
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
   integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
 
-set-immediate-shim@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz#4b2b1b27eb808a9f8dcc481a58e5e56f599f3f61"
-  integrity sha1-SysbJ+uAip+NzEgaWOXlb1mfP2E=
-
 set-value@^0.4.3:
   version "0.4.3"
   resolved "https://registry.yarnpkg.com/set-value/-/set-value-0.4.3.tgz#7db08f9d3d22dc7f78e53af3c3bf4666ecdfccf1"
@@ -7212,11 +7117,6 @@ unset-value@^1.0.0:
     has-value "^0.3.1"
     isobject "^3.0.0"
 
-upath@^1.0.0:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/upath/-/upath-1.0.5.tgz#02cab9ecebe95bbec6d5fc2566325725ab6d1a73"
-  integrity sha512-qbKn90aDQ0YEwvXoLqj0oiuUYroLX2lVHZ+b+xwjozFasAOC4GneDq5+OaIG5Zj+jFmbz/uO+f7a9qxjktJQww==
-
 uri-js@^4.2.2:
   version "4.2.2"
   resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
@@ -7327,12 +7227,11 @@ watch@~0.18.0:
     exec-sh "^0.2.0"
     minimist "^1.2.0"
 
-watchpack@^1.5.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/watchpack/-/watchpack-1.6.0.tgz#4bc12c2ebe8aa277a71f1d3f14d685c7b446cd00"
-  integrity sha512-i6dHe3EyLjMmDlU1/bGQpEw25XSjkJULPuAVKCbNRefQVq48yXKUpwg538F7AZTf9kyr57zj++pQFltUa5H7yA==
+watchpack@2.0.0-beta.2:
+  version "2.0.0-beta.2"
+  resolved "https://registry.yarnpkg.com/watchpack/-/watchpack-2.0.0-beta.2.tgz#357ed627767dd16ed80500f49c5d4029b49248cb"
+  integrity sha512-dzFk3sOzcuIC9s+6Qek6Y0cQmk+N8VvUSY1BtB9wCEpfbcUFOQS7tlD1wRnwq2gv+orBYB/td4hO59Z4lg6ELQ==
   dependencies:
-    chokidar "^2.0.2"
     graceful-fs "^4.1.2"
     neo-async "^2.5.0"