diff --git a/packages/angular/build/src/tools/vite/middlewares/assets-middleware.ts b/packages/angular/build/src/tools/vite/middlewares/assets-middleware.ts index 9dd93e1df516..6cc74495af29 100644 --- a/packages/angular/build/src/tools/vite/middlewares/assets-middleware.ts +++ b/packages/angular/build/src/tools/vite/middlewares/assets-middleware.ts @@ -63,6 +63,12 @@ export function createAngularAssetsMiddleware( return; } + // Support HTTP HEAD requests for the virtual output files from the Angular build + if (req.method === 'HEAD' && outputFiles.get(pathname)?.servable) { + // While a GET will also generate content, the rest of the response is equivalent + req.method = 'GET'; + } + // Resource files are handled directly. // Global stylesheets (CSS files) are currently considered resources to workaround // dev server sourcemap issues with stylesheets. diff --git a/tests/legacy-cli/e2e/tests/commands/serve/head-request.ts b/tests/legacy-cli/e2e/tests/commands/serve/head-request.ts new file mode 100644 index 000000000000..82ba370a0743 --- /dev/null +++ b/tests/legacy-cli/e2e/tests/commands/serve/head-request.ts @@ -0,0 +1,25 @@ +import { ngServe } from '../../../utils/project'; + +export default async function () { + const port = await ngServe(); + // HTML + await checkHeadForUrl(`http://localhost:${port}/index.html`); + // Generated JS + await checkHeadForUrl(`http://localhost:${port}/main.js`); + // Generated CSS + await checkHeadForUrl(`http://localhost:${port}/styles.css`); + // Configured asset + await checkHeadForUrl(`http://localhost:${port}/favicon.ico`); +} + +async function checkHeadForUrl(url: string): Promise { + const result = await fetch(url, { method: 'HEAD' }); + const content = await result.blob(); + + if (content.size !== 0) { + throw new Error(`Expected "size" to be "0" but got "${content.size}".`); + } + if (result.status !== 200) { + throw new Error(`Expected "status" to be "200" but got "${result.status}".`); + } +}