import babel from 'rollup-plugin-babel';
import resolve from 'rollup-plugin-node-resolve';
import commonjs from 'rollup-plugin-commonjs';
import { terser } from 'rollup-plugin-terser';
import json from "rollup-plugin-json";
// `npm run build` -> `production` is true
// `npm run dev` -> `production` is false
const production = !process.env.ROLLUP_WATCH;

export default {
    input: 'src/index.js',
    output: {
        file: 'dist/index.js',
        format: 'cjs', // common-js bundle as would be expected for node
        sourcemap: true
    },
    plugins: [
        // Add json support (sadly in rollup we have to do this explicity, despite the NodeJS algorithm supporitng this by defulat
        json(),
        // babel
        babel(),
        // node_modules
        resolve({
            preferBuiltins: true,
            extensions: ['.mjs', '.js', '.jsx', '.json'],
        }),
        // CJS-modules
        commonjs({
            'minimatch': ['Minimatch'],
        }),
        // minify, but only in production
        production && terser()
    ],
    external: [
    
    ]
};