rollup.config.js

var npm = require('rollup-plugin-node-resolve');
var commonjs = require('rollup-plugin-commonjs');
var buble = require('rollup-plugin-buble');
var replace = require('rollup-plugin-replace');

module.exports = {
    entry: 'raw_test/model_test.es6.js',
    dest: 'test/model_test.js',
    plugins: [
        npm({
            // use "jsnext:main" if possible
            // – see https://github.com/rollup/rollup/wiki/jsnext:main
            jsnext: true,  // Default: false

            // use "main" field or index.js, even if it's not an ES6 module
            // (needs to be converted from CommonJS to ES6
            // – see https://github.com/rollup/rollup-plugin-commonjs
            main: true,  // Default: true

            // if there's something your bundle requires that you DON'T
            // want to include, add it to 'skip'. Local and relative imports
            // can be skipped by giving the full filepath. E.g.,
            // `path.resolve('src/relative-dependency.js')`
            skip: [],  // Default: []

            // some package.json files have a `browser` field which
            // specifies alternative files to load for people bundling
            // for the browser. If that's you, use this option, otherwise
            // pkg.browser will be ignored
            browser: true,  // Default: false

            // not all files you want to resolve are .js files
            extensions: [ '.js', '.json' ],  // Default: ['.js']

            // whether to prefer built-in modules (e.g. `fs`, `path`) or
            // local ones with the same names
            preferBuiltins: false  // Default: true

        }),
        commonjs({
            // non-CommonJS modules will be ignored, but you can also
            // specifically include/exclude files
            include: 'node_modules/**',  // Default: undefined
            exclude: ['node_modules/js_collection/**'],  // Default: undefined

            // search for files other than .js files (must already
            // be transpiled by a previous plugin!)
            extensions: [ '.js', '.coffee' ],  // Default: [ '.js' ]

            // if true then uses of `global` won't be dealt with by this plugin
            ignoreGlobal: false,  // Default: false

            // if false then skip sourceMap generation for CommonJS modules
            sourceMap: false  // Default: true
        }),
        buble({
            exclude: "/node_modules\/(?!js_collection)/"
        })
    ]
}