Merge pull request webpack#6158 from codyogden/feature-extractTrackingSet

sokra · web-flow · commit fd2607fd1751 · 2017-12-20T10:48:55.000+01:00
Extract TrackingSet class from the Parser.js module.
diff --git a/lib/Parser.js b/lib/Parser.js
@@ -13,6 +13,7 @@ const HookMap = require("tapable/lib/HookMap");
 const vm = require("vm");
 const BasicEvaluatedExpression = require("./BasicEvaluatedExpression");
 const StackedSetMap = require("./util/StackedSetMap");
+const TrackingSet = require("./util/TrackingSet");
 
 const joinRanges = (startRange, endRange) => {
 	if(!endRange) return startRange;
@@ -40,36 +41,6 @@ const POSSIBLE_AST_OPTIONS = [{
 	}
 }];
 
-class TrackingSet {
-	constructor(set) {
-		this.set = set;
-		this.set2 = new Set();
-		this.stack = set.stack;
-	}
-
-	add(item) {
-		this.set2.add(item);
-		return this.set.add(item);
-	}
-
-	delete(item) {
-		this.set2.delete(item);
-		return this.set.delete(item);
-	}
-
-	has(item) {
-		return this.set.has(item);
-	}
-
-	createChild() {
-		return this.set.createChild();
-	}
-
-	getAddedItems() {
-		return this.set2;
-	}
-}
-
 class Parser extends Tapable {
 	constructor(options) {
 		super();
diff --git a/lib/util/TrackingSet.js b/lib/util/TrackingSet.js
@@ -0,0 +1,35 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+module.exports = class TrackingSet {
+	constructor(set) {
+		this.set = set;
+		this.set2 = new Set();
+		this.stack = set.stack;
+	}
+
+	add(item) {
+		this.set2.add(item);
+		return this.set.add(item);
+	}
+
+	delete(item) {
+		this.set2.delete(item);
+		return this.set.delete(item);
+	}
+
+	has(item) {
+		return this.set.has(item);
+	}
+
+	createChild() {
+		return this.set.createChild();
+	}
+
+	getAddedItems() {
+		return this.set2;
+	}
+};
