fix(coverage): include *.astro by default (#6565)

Author: AriPerkkio

docs/config/index.md

@@ -1157,7 +1157,7 @@ List of files included in coverage as glob patterns
 #### coverage.extension
 
 - **Type:** `string | string[]`
-- **Default:** `['.js', '.cjs', '.mjs', '.ts', '.mts', '.tsx', '.jsx', '.vue', '.svelte', '.marko']`
+- **Default:** `['.js', '.cjs', '.mjs', '.ts', '.mts', '.tsx', '.jsx', '.vue', '.svelte', '.marko', '.astro']`
 - **Available for providers:** `'v8' | 'istanbul'`
 - **CLI:** `--coverage.extension=<extension>`, `--coverage.extension=<extension1> --coverage.extension=<extension2>`
 

packages/vitest/src/defaults.ts

@@ -73,6 +73,7 @@ export const coverageConfigDefaults: ResolvedCoverageOptions = {
     '.vue',
     '.svelte',
     '.marko',
+    '.astro',
   ],
   allowExternal: false,
   excludeAfterRemap: false,