diff --git a/types/rollup/index.d.ts b/types/rollup/index.d.ts
index 36ac764bbd..80a74523a0 100644
--- a/types/rollup/index.d.ts
+++ b/types/rollup/index.d.ts
@@ -31,7 +31,7 @@ export interface BundleOptions {
 	/** The name to use for the module for UMD/IIFE bundles (required for bundles with exports). */
 	name?: string
 	/** Mapping of IDs → global variable names. Used for UMD/IIFE bundles. */
-	globals?: { [id: string]: string }
+	globals?: ((id: string) => string) | { [id: string]: string }
 	/**
 	 * Function that takes an ID and returns a path, or Object of id: path pairs.
 	 * Where supplied, these paths will be used in the generated bundle instead of the module ID, allowing you to (for example) load dependencies from a CDN.
diff --git a/types/rollup/rollup-tests.ts b/types/rollup/rollup-tests.ts
index 3ec00a357a..b9a9eac5d7 100644
--- a/types/rollup/rollup-tests.ts
+++ b/types/rollup/rollup-tests.ts
@@ -87,6 +87,22 @@ async function main() {
         strict: true,
     })
 
+    await bundle.write({
+        format: 'cjs',
+        file: 'bundle.js',
+        name: 'myLib',
+        interop: false,
+        globals: (x: string) => x.replace("", "/"),
+        banner: '/* Banner */',
+        footer: '/* Footer */',
+        intro: 'var ENV = "production";',
+        outro: 'var VERSION = "1.0.0";',
+        indent: '  ',
+        sourcemap: 'inline',
+        sourcemapFile: 'bundle.js.map',
+        strict: true,
+    })
+
     const watcher = watch({
         input: 'main.js',
         output: {