rollup.conf.js

import coverage from 'rollup-plugin-istanbul';
import common from '@rollup/plugin-commonjs';
import resolve from '@rollup/plugin-node-resolve';
import transform from '@rollup/plugin-buble';
const env = process.env.NODE_ENV || 'test'; // eslint-disable-line no-process-env
const plugins = [ common(), resolve(), transform() ];
if (env === 'test') {
  plugins.unshift(coverage({ exclude: 'test/*.js' }));
}
export default {
  input: env === 'test' ? 'test/index.js' : 'index.js',
  output: {
    file: env === 'test' ? 'type-detect.test.js' : 'type-detect.js',
    name: 'typeDetect',
    format: 'umd',
  },
  plugins,
};