plugin-commonjs is useless for node_modules file

[jiayechao]

i use @rollup/plugin-commonjs in vite

create a file named src/tool.js,
exports["default"] = 3

and import in App.vue

import a from './tool.js'
console.log(a) // {default: 3}

but same file in node_module is useless

import a from 'user.js' // tool.js in node_modules but wrong
// The requested module '/node_modules/user.js?v=313d6f97' does not provide an export named 'default'