build: Add build for browsers

.gitignore

@@ -19,3 +19,4 @@ dist
 out
 *.d.ts
 *.tgz
+umd

package.json

@@ -35,6 +35,7 @@
     "main": "./dist/index.js",
     "module": "./dist/index.mjs",
     "types": "./dist/index.d.ts",
+    "browser": "./umd/browser.global.js",
     "exports": {
       ".": {
         "import": {

src/browser.ts

@@ -0,0 +1,8 @@
+import * as toolkit from './index';
+
+interface Window {
+  _: typeof toolkit;
+}
+
+declare var window: Window;
+window._ = toolkit;

tsup.config.ts

@@ -1,9 +1,20 @@
 import { defineConfig } from 'tsup';
 
-export default defineConfig({
-  format: ['cjs', 'esm'],
-  entry: ['src/*.ts', 'src/*/*.ts', '!**/*.{spec,test,test-d}.*'],
-  sourcemap: true,
-  dts: true,
-  clean: true,
-});
+export default [
+  defineConfig({
+    format: ['cjs', 'esm'],
+    entry: ['src/*.ts', 'src/*/*.ts', '!**/*.{spec,test,test-d}.*'],
+    sourcemap: true,
+    dts: true,
+    clean: true,
+  }),
+  defineConfig({
+    format: ['iife'],
+    outDir: 'umd',
+    entry: ['src/browser.ts'],
+    sourcemap: true,
+    dts: false,
+    clean: true,
+    minify: true,
+  }),
+];