4.0.0 • Published 2 months ago
babel-plugin-env-constants v4.0.0
babel-plugin-env-constants
Transform __DEV__
, __PROD__
, and __TEST__
constants to process.env.NODE_ENV
conditionals.
// Input
if (__DEV__) {
console.log('Some message in development!');
}
const value = __TEST__ ? 0 : 100;
// Output
if (process.env.NODE_ENV !== 'production') {
console.log('Some message in development!');
}
const value = process.env.NODE_ENV === 'test' ? 0 : 100;
Installation
yarn add --dev babel-plugin-env-constants
Add the plugin to your root babel.config.*
file.
module.exports = {
plugins: ['babel-plugin-env-constants'],
};
And if you are using TypeScript, you'll most likely need to declare the globals yourself.
declare global {
const __DEV__: boolean;
const __PROD__: boolean;
const __TEST__: boolean;
}
Requirements
- Linux, OSX, Windows
- Node 14.15+
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