Regexp constructors transform

This changes RegExp constructors into literals if the RegExp arguments are strings

Example

const foo = 'ab+';
var a = new RegExp(foo+'c', 'i');

Out

const foo = 'ab+';
var a = /ab+c/i;

npm install babel-plugin-transform-regexp-constructors

.babelrc

{
  "plugins": ["transform-regexp-constructors"]
}

babel --plugins transform-regexp-constructors script.js

require("babel-core").transform("code", {
  plugins: ["transform-regexp-constructors"]
});

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