feat: add dts.banner and dts.footer options

package.json

@@ -18,7 +18,7 @@
   },
   "scripts": {
     "dev": "npm run build:simple -- --watch",
-    "build": "tsup src/cli-*.ts src/index.ts src/rollup.ts --clean --dts-resolve --splitting",
+    "build": "tsup src/cli-*.ts src/index.ts src/rollup.ts --clean --splitting",
     "prepublishOnly": "npm run build",
     "test": "npm run build:simple && jest",
     "//": "Building without dts for speed",

src/options.ts

@@ -9,6 +9,10 @@ export type DtsConfig = {
   resolve?: boolean | (string | RegExp)[]
   /** Emit declaration files only */
   only?: boolean
+  /** Insert at the top of each output .d.ts file  */
+  banner?: string
+  /** Insert at the bottom */
+  footer?: string
 }
 
 /**

src/rollup.ts

@@ -162,6 +162,8 @@ const getRollupConfig = async (
       dir: options.outDir || 'dist',
       format: 'esm',
       exports: 'named',
+      banner: dtsOptions.banner,
+      footer: dtsOptions.footer,
     },
   }
 }

tsup.config.ts

@@ -3,6 +3,10 @@ import { defineConfig } from 'tsup'
 
 export default defineConfig({
   name: 'tsup',
+  dts: {
+    resolve: true,
+    banner: '// hehe',
+  },
   esbuildPlugins: [
     {
       name: 'patch-rollup-plugin-dts',