remove "use strict" directive
npm install babel-plugin-transform-remove-strict-moderemove "use strict" directive
``sh`
$ npm install babel-plugin-transform-remove-strict-mode
.babelrc
`js`
{
"plugins": ["transform-remove-strict-mode"]
}
`sh`
$ babel --plugins transform-remove-strict-mode script.js
`javascript``
require("babel-core").transform("code", {
plugins: ["transform-remove-strict-mode"]
});