fix: Fix type resolution when moduleResolution is set to node (#1118)

Author: shuding

.changeset/smooth-numbers-whisper.md

@@ -0,0 +1,5 @@
+---
+'ai': patch
+---
+
+fix type resolution

packages/core/package.json

@@ -40,44 +40,37 @@
     ".": {
       "types": "./dist/index.d.ts",
       "import": "./dist/index.mjs",
-      "module": "./dist/index.mjs",
       "require": "./dist/index.js"
     },
     "./rsc": {
-      "types": "./rsc/dist/index.d.mts",
+      "types": "./rsc/dist/index.d.ts",
       "react-server": "./rsc/dist/rsc-server.mjs",
-      "import": "./rsc/dist/rsc-client.mjs",
-      "module": "./rsc/dist/rsc-client.mjs"
+      "import": "./rsc/dist/rsc-client.mjs"
     },
     "./prompts": {
       "types": "./prompts/dist/index.d.ts",
       "import": "./prompts/dist/index.mjs",
-      "module": "./prompts/dist/index.mjs",
       "require": "./prompts/dist/index.js"
     },
     "./react": {
       "types": "./react/dist/index.d.ts",
       "react-server": "./react/dist/index.server.mjs",
       "import": "./react/dist/index.mjs",
-      "module": "./react/dist/index.mjs",
       "require": "./react/dist/index.js"
     },
     "./svelte": {
       "types": "./svelte/dist/index.d.ts",
       "import": "./svelte/dist/index.mjs",
-      "module": "./svelte/dist/index.mjs",
       "require": "./svelte/dist/index.js"
     },
     "./vue": {
       "types": "./vue/dist/index.d.ts",
       "import": "./vue/dist/index.mjs",
-      "module": "./vue/dist/index.mjs",
       "require": "./vue/dist/index.js"
     },
     "./solid": {
       "types": "./solid/dist/index.d.ts",
       "import": "./solid/dist/index.mjs",
-      "module": "./solid/dist/index.mjs",
       "require": "./solid/dist/index.js"
     }
   },

packages/core/rsc/package.json

@@ -1,10 +1,9 @@
 {
-  "types": "./dist/rsc-types.d.mts",
+  "types": "./dist/index.d.ts",
   "exports": {
-    "types": "./dist/index.d.mts",
+    "types": "./dist/index.d.ts",
     "react-server": "./dist/rsc-server.mjs",
-    "import": "./dist/rsc-client.mjs",
-    "module": "./dist/rsc-client.mjs"
+    "import": "./dist/rsc-client.mjs"
   },
   "private": true,
   "peerDependencies": {

packages/core/tsup.config.ts

@@ -80,13 +80,27 @@ export default defineConfig([
     dts: true,
     sourcemap: true,
   },
-  // RSC APIs - server, client, types
+  // RSC APIs - server, client
   {
-    entry: ['rsc/rsc-server.ts', 'rsc/rsc-client.ts', 'rsc/index.ts'],
+    entry: ['rsc/rsc-server.ts', 'rsc/rsc-client.ts'],
     outDir: 'rsc/dist',
     format: ['esm'],
     external: ['react', 'zod', /\/rsc-shared/],
     dts: true,
     sourcemap: true,
   },
+  // RSC APIs - types
+  {
+    entry: ['rsc/index.ts'],
+    outDir: 'rsc/dist',
+    dts: true,
+    outExtension() {
+      return {
+        // It must be `.d.ts` instead of `.d.mts` to support node resolution.
+        // See https://github.com/vercel/ai/issues/1028.
+        dts: '.d.ts',
+        js: '.mjs',
+      };
+    },
+  },
 ]);