NODE_ENV inline transform

Inline the NODE_ENV environment variable and if it's a part of a binary expression

(eg. process.env.NODE_ENV === "development") then statically evaluate and replace it.

Example

In

process.env.NODE_ENV === "development";
process.env.NODE_ENV === "production";

Out

NODE_ENV=development babel in.js --plugins transform-node-env-inline
true;
false;

Installation

npm install babel-plugin-transform-node-env-inline

Usage

.babelrc

{
  "plugins": ["transform-node-env-inline"]
}

Via CLI

babel --plugins transform-node-env-inline script.js

Via Node API

require("@babel/core").transform("code", {
  plugins: ["transform-node-env-inline"]
});