fix: type error

packages/vitest/rollup.config.js

@@ -9,6 +9,7 @@ import alias from '@rollup/plugin-alias'
 import license from 'rollup-plugin-license'
 import c from 'picocolors'
 import fg from 'fast-glob'
+import { defineConfig } from 'rollup'
 
 import pkg from './package.json'
 
@@ -101,17 +102,24 @@ export default ({ watch }) => [
     external,
     plugins,
   },
-  ...dtsEntries.map(input => ({
-    input,
-    output: {
-      file: input.replace('src/', 'dist/').replace('.ts', '.d.ts'),
-      format: 'esm',
-    },
-    external,
-    plugins: [
-      dts({ respectExternal: true }),
-    ],
-  })),
+  ...dtsEntries.map((input) => {
+    const _external = external
+    // index is vitest default types export
+    if (!input.includes('index'))
+      _external.push('vitest')
+
+    return defineConfig({
+      input,
+      output: {
+        file: input.replace('src/', 'dist/').replace('.ts', '.d.ts'),
+        format: 'esm',
+      },
+      external: _external,
+      plugins: [
+        dts({ respectExternal: true }),
+      ],
+    })
+  }),
 ]
 
 function licensePlugin() {

packages/vitest/src/config.ts

@@ -1,10 +1,10 @@
 import type { UserConfig as ViteUserConfig } from 'vite'
-import type { InlineConfig } from './types'
 
 export interface UserConfig extends ViteUserConfig {
-  test?: InlineConfig
+  test?: ViteUserConfig['test']
 }
 
+// will import vitest declare test in module 'vite'
 export { configDefaults } from './defaults'
 
 export function defineConfig(config: UserConfig) {

packages/vitest/src/defaults.ts

@@ -1,4 +1,7 @@
-import type { ResolvedC8Options, UserConfig } from './types'
+// rollup dts building will external vitest
+// so output dts entry using vitest to import internal types
+// eslint-disable-next-line no-restricted-imports
+import type { ResolvedC8Options, UserConfig } from 'vitest'
 
 export const defaultInclude = ['**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}']
 export const defaultExclude = ['**/node_modules/**', '**/dist/**', '**/cypress/**', '**/.{idea,git,cache,output,temp}/**']

test/reporters/custom-reporter.vitest.config.ts

@@ -1,7 +1,5 @@
-import type { Reporter } from 'vitest'
-import type { Vitest } from 'vitest/src/node'
-
-import { defineConfig } from 'vite'
+import type { Reporter, Vitest } from 'vitest'
+import { defineConfig } from 'vitest/config'
 
 class TestReporter implements Reporter {
   ctx!: Vitest
@@ -18,6 +16,6 @@ class TestReporter implements Reporter {
 export default defineConfig({
   test: {
     include: ['tests/reporters.spec.ts'],
-    reporters: new TestReporter(),
+    reporters: [new TestReporter()],
   },
 })

test/reporters/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "compilerOptions": {
+    "paths": {
+      "vitest": ["./packages/vitest/index.d.ts"],
+      "vitest/node": ["./packages/vitest/node.d.ts"],
+      "vitest/config": ["./packages/vitest/config.d.ts"],
+    }
+  }
+}