feat: update package.json and tsdown.config.ts for improved module handling

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: YieldRay

package.json

@@ -5,16 +5,17 @@
   "files": [
     "dist"
   ],
-  "main": "dist/index.mjs",
-  "types": "dist/index.d.mts",
-  "unpkg": "dist/index.umd.js",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "browser": "dist/index.mjs",
   "scripts": {
     "build": "tsdown"
   },
   "dependencies": {
     "typescript": "^5.9.3"
   },
   "devDependencies": {
+    "@types/node": "^24.12.0",
     "tsdown": "^0.20.3"
   },
   "author": "YieldRay",

pnpm-workspace.yaml

@@ -1,3 +1,4 @@
 packages:
   - .
   - docs
+  - example

tsdown.config.ts

@@ -1,21 +1,57 @@
 import { defineConfig } from "tsdown";
+import { createRequire } from "node:module";
 
-export default defineConfig({
-  dts: true,
-  entry: ["./src/index.ts"],
-  sourcemap: true,
-  format: {
-    esm: {
-      target: ["es2015"],
+const require = createRequire(import.meta.url);
+const tsVersion: string = require("typescript/package.json").version;
+
+export default defineConfig([
+  // index.js — ESM, unbundled (external deps)
+  {
+    dts: true,
+    entry: { index: "./src/index.ts" },
+    sourcemap: true,
+    format: "esm",
+    platform: "browser",
+    target: ["esnext"],
+    outputOptions: {
+      entryFileNames: "[name].js",
     },
-    umd: {
-      outputOptions: {
-        name: "ModuleTSX",
+  },
+  // index.mjs — ESM, bundled (typescript externalized to esm.sh for browser compatibility)
+  {
+    dts: false,
+    entry: { index: "./src/index.ts" },
+    sourcemap: true,
+    format: "esm",
+    platform: "browser",
+    target: ["esnext"],
+    noExternal: () => true,
+    plugins: [
+      {
+        name: "resolve-typescript-to-esm-sh",
+        resolveId(id) {
+          if (id === "typescript") return { id: `https://esm.sh/typescript@${tsVersion}`, external: true };
+        },
       },
-      target: ["es2015"],
-      noExternal: () => true,
-      minify: true,
-      inlineOnly: false,
+    ],
+    outputOptions: {
+      entryFileNames: "[name].mjs",
+    },
+  },
+  // index.umd.js — UMD, bundled + minified
+  {
+    dts: false,
+    entry: { index: "./src/index.ts" },
+    sourcemap: true,
+    format: "umd",
+    platform: "browser",
+    target: ["esnext"],
+    noExternal: () => true,
+    inlineOnly: false,
+    minify: true,
+    outputOptions: {
+      name: "ModuleTSX",
+      entryFileNames: "[name].umd.js",
     },
   },
-});
+]);