From 52576739d5528203639a774ddb90e8a41a595038 Mon Sep 17 00:00:00 2001
From: Filipe Silva <filipematossilva@gmail.com>
Date: Thu, 12 Oct 2017 12:34:20 +0100
Subject: [PATCH] fix(@ngtools/webpack): fix rebuild speed regression

See https://github.com/angular/angular-cli/issues/7995#issuecomment-336036482 for details.

Fix regression introduced in https://github.com/angular/angular-cli/pull/7998
---
 packages/@ngtools/webpack/src/loader.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/@ngtools/webpack/src/loader.ts b/packages/@ngtools/webpack/src/loader.ts
index 8ba881982323..6199eb6cdfd4 100644
--- a/packages/@ngtools/webpack/src/loader.ts
+++ b/packages/@ngtools/webpack/src/loader.ts
@@ -599,8 +599,9 @@ export function ngcLoader(this: LoaderContext & { _compilation: any }, source: s
         _getResourcesUrls(refactor).forEach((url: string) => {
           this.addDependency(path.resolve(path.dirname(sourceFileName), url));
         });
+        // Dependencies must use system path separator.
         _getImports(refactor, compilerOptions, plugin.compilerHost, plugin.moduleResolutionCache)
-          .forEach((importString: string) => this.addDependency(importString));
+          .forEach(dep => this.addDependency(dep.replace(/\//g, path.sep)));
       })
       .then(() => {
         if (source) {