diff --git a/src/cli.ts b/src/cli.ts
index 69e2cbc50..2f83c5889 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -16,6 +16,7 @@ cli
   .option('--target <target>', 'Bundle target, "es20XX" or "esnext"', {
     default: 'es2017',
   })
+  .option('--bundle', 'Bundle node_modules')
   .option('--watch', 'Watch mode')
   .action(async (files: string[], options) => {
     const { rollup, watch } = await import('rollup')
@@ -28,7 +29,7 @@ cli
       input: files,
       plugins: [
         hashbangPlugin(),
-        resolvePlugin(),
+        resolvePlugin({ bundle: options.bundle }),
         commonjsPlugin(),
         esbuildPlugin({ minify: options.minify, target: options.target }),
       ],
diff --git a/src/resolve-plugin.ts b/src/resolve-plugin.ts
index 4aa0c9bbb..ff449b225 100644
--- a/src/resolve-plugin.ts
+++ b/src/resolve-plugin.ts
@@ -15,7 +15,7 @@ const resolvePackage = (id: string, options: ResolveOpts): Promise<string> =>
 
 const PACKAGE_NAME_RE = /^[@a-z]/
 
-export const resolvePlugin = (): Plugin => {
+export const resolvePlugin = ({ bundle }: { bundle?: boolean }): Plugin => {
   return {
     name: 'resolve',
 
@@ -25,11 +25,14 @@ export const resolvePlugin = (): Plugin => {
         return false
       }
 
-      const cwd = importer && dirname(importer)
-      if (cwd && PACKAGE_NAME_RE.test(source)) {
-        const id = await resolvePackage(source, { basedir: cwd })
-        return id
+      if (bundle) {
+        const cwd = importer && dirname(importer)
+        if (cwd && PACKAGE_NAME_RE.test(source)) {
+          const id = await resolvePackage(source, { basedir: cwd })
+          return id
+        }
       }
+
       return null
     },
   }