.babelrc配置

{
  "presets": [
    ["@babel/preset-env", { "useBuiltIns": "entry" }],
    "@babel/preset-react"
  ]
}

报错如下：

C:UsersAdministratorDesktopdemo
ode_modules_weui@1.1.0@weuidiststyleweui.css:6
html {
     ^

SyntaxError: Unexpected token {
    at new Script (vm.js:79:7)
    at createScript (vm.js:251:10)
    at Object.runInThisContext (vm.js:303:10)
    at Module._compile (internal/modules/cjs/loader.js:657:28)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)
[nodemon] app crashed - waiting for file changes before starting...

webpack is watching the files…


With `useBuiltIns` option, required direct setting of `corejs` option