node-env-webpack-plugin/index.js

Simplified `NODE_ENV` handling with webpack

import process from 'node:process';
import webpack from 'webpack';
import hasFlag from 'has-flag';

process.env.NODE_ENV ||= hasFlag('p') ? 'production' : 'development';

export default class NodeEnvPlugin {
	apply(compiler) {
		new webpack.DefinePlugin({
			'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),
		}).apply(compiler);
	}
}

export const isProduction = process.env.NODE_ENV === 'production';
export const isDevelopment = process.env.NODE_ENV === 'development';
export const isTest = process.env.NODE_ENV === 'test';
export const devtool = isProduction ? 'source-map' : 'cheap-module-source-map';