import { mergeWithCustomize , customizeArray , customizeObject } from 'webpack-merge' ; const builtinStrategy = { customizeArray : customizeArray ( { 'module.rules' : 'append' } ) , customizeObject : customizeObject ( { 'resolve.alias' : 'prepend' } ) , } ; export const mergeBuiltin = mergeWithCustomize ( builtinStrategy ) ;