feat: refactor tsdown.config.ts to improve file handling and add shebang support

Author: nice-winter

tsdown.config.ts

@@ -1,6 +1,11 @@
-import { globSync } from 'node:fs'
+import { globSync, existsSync, readFileSync, writeFileSync } from 'node:fs'
+import { dirname, resolve } from 'node:path'
+import { fileURLToPath } from 'node:url'
 import { defineConfig } from 'tsdown'
 
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = dirname(__filename)
+
 const entry = globSync('src/**/*.ts')
 
 export default defineConfig({
@@ -14,8 +19,24 @@ export default defineConfig({
   hooks: {
     'build:done': (ctx) => {
       const pkg = ctx.options.pkg
-      const binFilesList = pkg.bin
-      console.log(ctx)
+
+      const binFilesList =
+        typeof pkg.bin === 'string'
+          ? [pkg.bin as string]
+          : typeof pkg.bin === 'object'
+            ? [...new Set(Object.values(pkg.bin) as string[])]
+            : []
+
+      binFilesList
+        .map((file) => resolve(__dirname, file))
+        .filter((file) => existsSync(file))
+        .forEach((file) => {
+          const content = readFileSync(file, 'utf8')
+          const shebang = `#!/usr/bin/env node`
+
+          if (!content.startsWith(shebang))
+            writeFileSync(file, `${shebang}\n${content}`)
+        })
     }
   }
 })