feat: use typescript project only for type-aware files, closes #380 (#384)

Author: Dimava

src/configs/typescript.ts

@@ -19,6 +19,10 @@ export async function typescript(
   ]
 
   const filesTypeAware = options.filesTypeAware ?? [GLOB_TS, GLOB_TSX]
+  const tsconfigPath = options?.tsconfigPath
+    ? toArray(options.tsconfigPath)
+    : undefined
+  const isTypeAware = !!tsconfigPath
 
   const typeAwareRules: FlatConfigItem['rules'] = {
     'dot-notation': 'off',
@@ -42,10 +46,6 @@ export async function typescript(
     'ts/unbound-method': 'error',
   }
 
-  const tsconfigPath = options?.tsconfigPath
-    ? toArray(options.tsconfigPath)
-    : undefined
-
   const [
     pluginTs,
     parserTs,
@@ -54,23 +54,16 @@ export async function typescript(
     interopDefault(import('@typescript-eslint/parser')),
   ] as const)
 
-  return [
-    {
-      // Install the plugins without globs, so they can be configured separately.
-      name: 'antfu:typescript:setup',
-      plugins: {
-        antfu: pluginAntfu,
-        ts: pluginTs as any,
-      },
-    },
-    {
+  function makeParser(typeAware: boolean, files: string[], ignores?: string[]): FlatConfigItem {
+    return {
       files,
+      ...ignores ? { ignores } : {},
       languageOptions: {
         parser: parserTs,
         parserOptions: {
           extraFileExtensions: componentExts.map(ext => `.${ext}`),
           sourceType: 'module',
-          ...tsconfigPath
+          ...typeAware
             ? {
                 project: tsconfigPath,
                 tsconfigRootDir: process.cwd(),
@@ -79,6 +72,28 @@ export async function typescript(
           ...parserOptions as any,
         },
       },
+      name: `antfu:typescript:${typeAware ? 'type-aware-parser' : 'parser'}`,
+    }
+  }
+
+  return [
+    {
+      // Install the plugins without globs, so they can be configured separately.
+      name: 'antfu:typescript:setup',
+      plugins: {
+        antfu: pluginAntfu,
+        ts: pluginTs as any,
+      },
+    },
+    // assign type-aware parser for type-aware files and type-unaware parser for the rest
+    ...isTypeAware
+      ? [
+          makeParser(true, filesTypeAware),
+          makeParser(false, files, filesTypeAware),
+        ]
+      : [makeParser(false, files)],
+    {
+      files,
       name: 'antfu:typescript:rules',
       rules: {
         ...renameRules(