add exports types test

test/integration.test.ts

@@ -174,6 +174,22 @@ const testCases: {
       }
     },
   },
+  {
+    name: 'ts-exports-types',
+    args: [],
+    async expected(dir) {
+      const distFiles = [
+        join(dir, './dist/index.mjs'),
+        join(dir, './dist/index.cjs'),
+        join(dir, './dist/index.d.mts'),
+        join(dir, './dist/index.d.cts'),
+        join(dir, './dist/index.d.ts'),
+      ]
+      for (const f of distFiles) {
+        expect(await existsFile(f)).toBe(true)
+      }
+    },
+  },
   {
     name: 'single-entry',
     args: [],

test/integration/ts-exports-types/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "ts-dual-esm-cjs",
+  "exports": {
+    "types": "./dist/index.d.ts",
+    "import": "./dist/index.mjs",
+    "require": "./dist/index.cjs"
+  }
+}

test/integration/ts-exports-types/src/index.ts

@@ -0,0 +1 @@
+export default () => 'index'

test/integration/ts-exports-types/tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "allowJs": true
+  }
+}