1 files changed, 37 insertions, 31 deletions
diff --git a/node_modules/webpack/lib/WarnCaseSensitiveModulesPlugin.js b/node_modules/webpack/lib/WarnCaseSensitiveModulesPlugin.js
index 54edb4ac7..867a33fe3 100644
--- a/node_modules/webpack/lib/WarnCaseSensitiveModulesPlugin.js
+++ b/node_modules/webpack/lib/WarnCaseSensitiveModulesPlugin.js
@@ -1,31 +1,37 @@
-/*
-	MIT License http://www.opensource.org/licenses/mit-license.php
-	Author Tobias Koppers @sokra
-*/
-"use strict";
-
-const CaseSensitiveModulesWarning = require("./CaseSensitiveModulesWarning");
-
-class WarnCaseSensitiveModulesPlugin {
-	apply(compiler) {
-		compiler.plugin("compilation", compilation => {
-			compilation.plugin("seal", () => {
-				const moduleWithoutCase = Object.create(null);
-				compilation.modules.forEach(module => {
-					const identifier = module.identifier().toLowerCase();
-					if(moduleWithoutCase[identifier]) {
-						moduleWithoutCase[identifier].push(module);
-					} else {
-						moduleWithoutCase[identifier] = [module];
-					}
-				});
-				Object.keys(moduleWithoutCase).forEach(key => {
-					if(moduleWithoutCase[key].length > 1)
-						compilation.warnings.push(new CaseSensitiveModulesWarning(moduleWithoutCase[key]));
-				});
-			});
-		});
-	}
-}
-
-module.exports = WarnCaseSensitiveModulesPlugin;
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const CaseSensitiveModulesWarning = require("./CaseSensitiveModulesWarning");
+
+class WarnCaseSensitiveModulesPlugin {
+	apply(compiler) {
+		compiler.hooks.compilation.tap(
+			"WarnCaseSensitiveModulesPlugin",
+			compilation => {
+				compilation.hooks.seal.tap("WarnCaseSensitiveModulesPlugin", () => {
+					const moduleWithoutCase = new Map();
+					for (const module of compilation.modules) {
+						const identifier = module.identifier().toLowerCase();
+						const array = moduleWithoutCase.get(identifier);
+						if (array) {
+							array.push(module);
+						} else {
+							moduleWithoutCase.set(identifier, [module]);
+						}
+					}
+					for (const pair of moduleWithoutCase) {
+						const array = pair[1];
+						if (array.length > 1) {
+							compilation.warnings.push(new CaseSensitiveModulesWarning(array));
+						}
+					}
+				});
+			}
+		);
+	}
+}
+
+module.exports = WarnCaseSensitiveModulesPlugin;