Externalize optional deps

Author: davidmyersdev

README.md

@@ -39,6 +39,7 @@ Pass an object to `externalizeDeps` to override the default configuration.
 // These are the default values.
 externalizeDeps({
   deps: true,
+  optionalDeps: true,
   peerDeps: true,
   useFile: join(process.cwd(), 'package.json'),
 })

src/index.ts

@@ -4,13 +4,15 @@ import type { Plugin } from 'vite'
 
 interface UserOptions {
   deps: boolean,
+  optionalDeps: boolean,
   peerDeps: boolean,
   useFile: string,
 }
 
 export const externalizeDeps = (options: Partial<UserOptions> = {}): Plugin => {
   const optionsResolved: UserOptions = {
     deps: true,
+    optionalDeps: true,
     peerDeps: true,
     useFile: join(process.cwd(), 'package.json'),
     // User options take priority.