feat(builder): generate type definition files on build time

Author: devphilip21

internal/builder/package.json

@@ -15,6 +15,7 @@
   "devDependencies": {
     "@types/node": "^24",
     "typescript": "*",
-    "vite": "*"
+    "vite": "*",
+    "vite-plugin-dts": "^4.5.4"
   }
 }

internal/builder/src/configs/vite.prod.ts

@@ -1,6 +1,7 @@
 import { resolve } from 'node:path';
 import { existsSync } from 'node:fs';
 import type { InlineConfig } from 'vite';
+import dts from 'vite-plugin-dts';
 
 function resolveEntry(cwd: string): string {
   const tsEntry = resolve(cwd, 'src', 'index.ts');
@@ -14,6 +15,12 @@ export function createViteProdConfig(): InlineConfig {
   const cwd = process.cwd();
 
   return {
+    plugins: [
+      dts({
+        insertTypesEntry: true,
+        exclude: ['**/*.spec.ts', '**/*.test.ts'],
+      }),
+    ],
     build: {
       lib: {
         entry: resolveEntry(cwd),
@@ -23,6 +30,9 @@ export function createViteProdConfig(): InlineConfig {
       outDir: resolve(cwd, 'dist'),
       sourcemap: true,
       minify: 'esbuild',
+      rollupOptions: {
+        external: [/\.spec\.ts$/, /\.test\.ts$/],
+      },
     },
   };
 }

packages/stream/package.json

@@ -6,12 +6,15 @@
   "type": "module",
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
+  "types": "./dist/index.d.ts",
   "exports": {
     ".": {
+      "types": "./dist/index.d.ts",
       "import": "./dist/index.js",
       "require": "./dist/index.cjs"
     },
     "./operators": {
+      "types": "./dist/operators.d.ts",
       "import": "./dist/operators.js",
       "require": "./dist/operators.cjs"
     }