fix(webpack): fixing null pointer about projectGraph with nx enhance configuration

e2e/webpack/src/webpack.test.ts

@@ -336,6 +336,42 @@ describe('Webpack Plugin', () => {
       `Successfully ran target build for project ${appName} and 1 task it depends on`
     );
   });
+
+  it('should be able to support webpack config with nx enhanced and babel', () => {
+    const appName = uniq('app');
+
+    runCLI(
+      `generate @nx/web:app ${appName} --bundler=webpack --compiler=babel`
+    );
+
+    updateFile(
+      `apps/${appName}/webpack.config.js`,
+      `
+      const { composePlugins, withNx } = require('@nx/webpack');
+      const { withReact } = require('@nx/react');
+      const { join } = require('path');
+
+      const pluginOption = {
+        index: 'apps/${appName}/src/index.html',
+        main: 'apps/${appName}/src/main.ts',
+        tsConfig: 'apps/${appName}/tsconfig.app.json',
+        outputPath: 'dist/apps/${appName}',
+      }
+
+      // Nx composable plugins for webpack.
+      module.exports = composePlugins(
+        withNx(pluginOption),
+        withReact(pluginOption),
+      );`
+    );
+
+    const result = runCLI(`build ${appName}`);
+
+    expect(result).toContain(`nx run ${appName}:build`);
+    expect(result).toContain(
+      `Successfully ran target build for project ${appName}`
+    );
+  });
 });
 
 function readMainFile(dir: string): string {

packages/webpack/src/utils/config.ts

@@ -105,5 +105,6 @@ function ensureNxWebpackExecutionContext(ctx: NxWebpackExecutionContext): void {
     cwd: process.cwd(),
     root: workspaceRoot,
     isVerbose: process.env['NX_VERBOSE_LOGGING'] === 'true',
+    projectGraph,
   };
 }