fix: duplicates on arrays

Author: crashmax-dev

src/helpers.ts

@@ -2,9 +2,7 @@ import { transformWithEsbuild } from 'vite'
 import { grants } from './constants.js'
 import type { Grants, Transform } from './types.js'
 
-export function removeDuplicates(
-  arr: string | string[] | readonly string[] | undefined
-): any[] {
+export function removeDuplicates(arr: any): any[] {
   return [...new Set(Array.isArray(arr) ? arr : arr ? [arr] : [])]
 }
 

src/index.ts

@@ -64,9 +64,7 @@ export default function UserscriptPlugin(
         'connect'
       ]).forEach((key) => {
         const value = config.header[key]
-        if (Array.isArray(value)) {
-          config.header[key] = removeDuplicates(value)
-        }
+        config.header[key] = removeDuplicates(value)
       })
 
       config.server = {