fix(webpack): publicPath and rebaseRootRelative (#20992)

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## Current Behavior
<!-- This is the behavior we have today -->
 can not configure webpack publicPath with NX option.
## Expected Behavior
<!-- This is the behavior we should expect with the changes in this PR
-->
 make the publicPath work with postcssCliResources.
## Related Issue(s)
<!-- Please link the issue being fixed so it gets closed when this is
merged. -->

Fixes #

---------

Co-authored-by: Colum Ferry <cferry09@gmail.com>

docs/generated/packages/webpack/executors/webpack.json

@@ -375,6 +375,14 @@
         "type": "string",
         "description": "Path to the babel configuration file of your project. If not provided, Nx will default to the .babelrc file at the root of your project. See https://babeljs.io/docs/en/config-files",
         "x-completion-type": "file"
+      },
+      "publicPath": {
+        "type": "string",
+        "description": "Set a public path for assets resources with absolute paths."
+      },
+      "rebaseRootRelative": {
+        "type": "boolean",
+        "description": "Whether to rebase absolute path for assets in postcss cli resources."
       }
     },
     "required": [],

packages/webpack/src/executors/webpack/schema.d.ts

@@ -84,6 +84,8 @@ export interface WebpackExecutorOptions {
   stylePreprocessorOptions?: any;
   styles?: Array<ExtraEntryPointClass | string>;
   subresourceIntegrity?: boolean;
+  publicPath?: string;
+  rebaseRootRelative?: boolean;
 }
 
 export interface NormalizedWebpackExecutorOptions

packages/webpack/src/executors/webpack/schema.json

@@ -299,6 +299,14 @@
       "type": "string",
       "description": "Path to the babel configuration file of your project. If not provided, Nx will default to the .babelrc file at the root of your project. See https://babeljs.io/docs/en/config-files",
       "x-completion-type": "file"
+    },
+    "publicPath": {
+      "type": "string",
+      "description": "Set a public path for assets resources with absolute paths."
+    },
+    "rebaseRootRelative": {
+      "type": "boolean",
+      "description": "Whether to rebase absolute path for assets in postcss cli resources."
     }
   },
   "required": [],

packages/webpack/src/plugins/nx-webpack-plugin/lib/stylesheet-loaders.ts

@@ -128,6 +128,8 @@ function postcssOptionsCreator(
               deployUrl: options.deployUrl,
               loader,
               filename: `[name]${hashFormat.file}.[ext]`,
+              publicPath: options.publicPath,
+              rebaseRootRelative: options.rebaseRootRelative,
             }),
             autoprefixer(),
           ]),

packages/webpack/src/plugins/nx-webpack-plugin/nx-app-webpack-plugin-options.ts

@@ -210,6 +210,14 @@ export interface NxAppWebpackPluginOptions {
    * Watch for file changes.
    */
   watch?: boolean;
+  /**
+   * Set a public path for assets resources with absolute paths.
+   */
+  publicPath?: string;
+  /**
+   * Whether to rebase absolute path for assets in postcss cli resources.
+   */
+  rebaseRootRelative?: boolean;
 }
 
 export interface NormalizedNxAppWebpackPluginOptions

packages/webpack/src/utils/webpack/plugins/postcss-cli-resources.ts

@@ -22,6 +22,7 @@ export interface PostcssCliResourcesOptions {
   rebaseRootRelative?: boolean;
   filename: string;
   loader: LoaderContext<unknown>;
+  publicPath: string;
 }
 
 async function resolve(
@@ -46,6 +47,7 @@ export function PostcssCliResources(options: PostcssCliResourcesOptions) {
     rebaseRootRelative = false,
     filename,
     loader,
+    publicPath = '',
   } = options;
   const dedupeSlashes = (url: string) => url.replace(/\/\/+/g, '/');
   const process = async (
@@ -85,7 +87,9 @@ export function PostcssCliResources(options: PostcssCliResourcesOptions) {
           dedupeSlashes(`/${deployUrl}/${inputUrl}`);
       } else {
         // Join together base-href, deploy-url and the original URL.
-        outputUrl = dedupeSlashes(`/${baseHref}/${deployUrl}/${inputUrl}`);
+        outputUrl = dedupeSlashes(
+          `/${baseHref}/${deployUrl}/${publicPath}/${inputUrl}`
+        );
       }
       resourceCache.set(cacheKey, outputUrl);
       return outputUrl;