packages/ngtools/webpack/src/compiler_host.ts

@@ -359,7 +359,7 @@ export class WebpackCompilerHost implements ts.CompilerHost {
   }
 
   getCanonicalFileName(fileName: string): string {
-    const path = this.resolve(fileName);
+    const path = workaroundResolve(this.resolve(fileName));
 
     return this.useCaseSensitiveFileNames() ? path : path.toLowerCase();
   }

packages/ngtools/webpack/src/utils.ts

@@ -9,9 +9,11 @@ import { Path, getSystemPath, normalize } from '@angular-devkit/core';
 
 // `TsCompilerAotCompilerTypeCheckHostAdapter` in @angular/compiler-cli seems to resolve module
 // names directly via `resolveModuleName`, which prevents full Path usage.
+// NSTSC also uses Node.JS `path.resolve` which will result in incorrect paths in Windows
+// Example: `/D/MyPath/MyProject` -> `D:/d/mypath/myproject`
 // To work around this we must provide the same path format as TS internally uses in
 // the SourceFile paths.
-export function workaroundResolve(path: Path | string) {
+export function workaroundResolve(path: Path | string): string {
   return forwardSlashPath(getSystemPath(normalize(path)));
 }
 
@@ -20,6 +22,6 @@ export function flattenArray<T>(value: Array<T | T[]>): T[] {
 }
 
 // TS represents paths internally with '/' and expects paths to be in this format.
-export function forwardSlashPath(path: string) {
+export function forwardSlashPath(path: string): string {
   return path.replace(/\\/g, '/');
 }

packages/schematics/angular/utility/latest-versions.ts

@@ -8,7 +8,7 @@
 
 export const latestVersions = {
   // These versions should be kept up to date with latest Angular peer dependencies.
-  Angular: '~9.1.6',
+  Angular: '~9.1.7',
   RxJs: '~6.5.4',
   ZoneJs: '~0.10.2',
   TypeScript: '~3.8.3',
@@ -18,9 +18,9 @@ export const latestVersions = {
   // For our e2e tests, these versions must match the latest tag present on the branch.
   // During RC periods they will not match the latest RC until there's a new git tag, and
   // should not be updated.
-  DevkitBuildAngular: '~0.901.5',
-  DevkitBuildNgPackagr: '~0.901.5',
-  DevkitBuildWebpack: '~0.901.5',
+  DevkitBuildAngular: '~0.901.6',
+  DevkitBuildNgPackagr: '~0.901.6',
+  DevkitBuildWebpack: '~0.901.6',
 
   ngPackagr: '^9.0.0',
 };