rollupでerror: path is not definedが出る

Question

###前提・実現したいこと
riot.jsをrollupでコンパイルしていたところ、次のエラーが起きてしまい、困っています。
直し方を知っていたら、教えてください。
###エラーメッセージ

preferring built-in module 'path' over local alternative at '/Users/morit
a1/Desktop/riot_timetable/node_modules/path/path.js', pass 'preferBuiltin
s: false' to disable this behavior or 'preferBuiltins: true' to disable t
his warning
preferring built-in module 'path' over local alternative at '/Users/morit
a1/Desktop/riot_timetable/node_modules/path/path.js', pass 'preferBuiltin
s: false' to disable this behavior or 'preferBuiltins: true' to disable t

his warning
⚠   'path' is imported by node_modules/riot-router/node_modules/riot/lib
/server/index.js, but could not be resolved – treating it as an external
dependency
https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-
external-dependency

⚠   'fs' is imported by node_modules/riot-router/node_modules/riot/lib/s
erver/index.js, but could not be resolved – treating it as an external de
pendency
https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-
external-dependency

⚠   'module' is imported by node_modules/riot-router/node_modules/riot/l
ib/server/index.js, but could not be resolved – treating it as an externa
l dependency
https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-
external-dependency

preferring built-in module 'path' over local alternative at '/Users/morit
a1/Desktop/riot_timetable/node_modules/path/path.js', pass 'preferBuiltin
s: false' to disable this behavior or 'preferBuiltins: true' to disable t
his warning
preferring built-in module 'path' over local alternative at '/Users/morit
a1/Desktop/riot_timetable/node_modules/path/path.js', pass 'preferBuiltin
s: false' to disable this behavior or 'preferBuiltins: true' to disable t
his warning
preferring built-in module 'path' over local alternative at '/Users/morit
a1/Desktop/riot_timetable/node_modules/path/path.js', pass 'preferBuiltin
s: false' to disable this behavior or 'preferBuiltins: true' to disable t
his warning
⚠   'path' is imported by commonjs-external:path, but could not be resol
ved – treating it as an external dependency

https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-
external-dependency

⚠   'fs' is imported by commonjs-external:fs, but could not be resolved
– treating it as an external dependency
https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-
external-dependency

⚠   'module' is imported by commonjs-external:module, but could not be r
esolved – treating it as an external dependency
https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-
external-dependency

⚠   'default' is not exported by 'node_modules/simple-dom/lib/simple-dom
.js'
https://github.com/rollup/rollup/wiki/Troubleshooting#name-is-not-exporte
d-by-module
commonjs-proxy:/Users/morita1/Desktop/riot_timetable/node_modules/simple-
dom/lib/simple-dom.js (1:150)
1: import * as simpleDom from "/Users/morita1/Desktop/riot_timetable/node
_modules/simple-dom/lib/simple-dom.js"; export default ( simpleDom && sim
pleDom['default'] ) || simpleDom;


⚠   'default' is not exported by 'node_modules/simple-html-tokenizer/lib
/simple-html-tokenizer/index.js'
https://github.com/rollup/rollup/wiki/Troubleshooting#name-is-not-exporte
d-by-module

commonjs-proxy:/Users/morita1/Desktop/riot_timetable/node_modules/simple-
html-tokenizer/lib/simple-html-tokenizer/index.js (1:166)
1: import * as index from "/Users/morita1/Desktop/riot_timetable/node_mod
ules/simple-html-tokenizer/lib/simple-html-tokenizer/index.js"; export de
fault ( index && index['default'] ) || index;


                       ^

⚠   Creating a browser bundle that depends on Node.js built-in module ('
path'). You might need to include https://www.npmjs.com/package/rollup-pl
ugin-node-builtins

⚠   No name was provided for external module 'path' in options.globals –
 guessing 'path'

⚠   No name was provided for external module 'fs' in options.globals – g
uessing 'fs'

⚠   No name was provided for external module 'module' in options.globals
 – guessing 'module$1'

###該当のソースコード

<app>
    <div>hello world!</div>
</app>

import 'babel-polyfill'
import 'es6-promise'
import 'fetch-polyfill'
import riot from 'riot'
import route from 'riot-route'
import Router from 'riot-router'
import './tags/app.tag'
window.riot = riot;
window.obs = riot.observable()
window.route = route;
document.addEventListener('DOMContentLoaded', () => {
    route.start(true)
    riot.mount('*')
})

import riot from 'rollup-plugin-riot'
import nodeResolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
// import buble from 'rollup-plugin-buble'
import postcss from 'postcss'
import postcssCssnext from 'postcss-cssnext'
import babel from 'rollup-plugin-babel'
// import path from 'path'
// import moment from 'moment';
// import inject from 'rollup-plugin-inject';
import replace from 'rollup-plugin-replace'

export default {
    entry: 'src/main.js',
    dest: 'dist/bundle.js',
    plugins: [
        replace({
            'process.env.NODE_ENV': JSON.stringify('production')
        }),
        riot({
            style: 'cssnext',
            parsers: {
                css: {
                    cssnext
                }
            }
        }),
        nodeResolve({
            jsnext: true
        }),
        commonjs(),
        babel()
    ],
    format: 'iife'
}

/**
 * Transforms new CSS specs into more compatible CSS
 */
function cssnext(tagName, css) {
    // A small hack: it passes :scope as :root to PostCSS.
    // This make it easy to use css variables inside tags.
    css = css.replace(/:scope/g, ':root')
    css = postcss([postcssCssnext]).process(css).css
    css = css.replace(/:root/g, ':scope')
    return css
}

###補足情報(言語/FW/ツール等のバージョンなど)
"dependencies": {
"es6-promise": "^4.0.5",
"fetch-polyfill": "^0.8.2",
"immutable": "^3.8.1",
"marked": "^0.3.6",
"object-assign": "^4.1.1",
"path": "^0.12.7",
"postcss": "^5.2.11",
"redux": "^3.6.0",
"redux-logger": "^2.7.4",
"redux-saga": "^0.14.3",
"reselect": "^2.5.4",
"riot": "^3.1.0",
"riot-redux": "^0.3.3",
"riot-redux-mixin": "^1.0.0",
"riot-route": "^2.5.0",
"riot-router": "^0.8.1"
},
"devDependencies": {
"babel-plugin-add-module-exports": "^0.2.1",
"babel-plugin-external-helpers": "^6.22.0",
"babel-plugin-transform-object-rest-spread": "^6.22.0",
"babel-plugin-transform-runtime": "^6.22.0",
"babel-polyfill": "^6.22.0",
"babel-preset-es2015": "^6.22.0",
"babel-preset-es2015-riot": "^1.1.0",
"babel-register": "^6.22.0",
"browser-sync": "^2.18.6",
"chokidar-cli": "^1.2.0",
"moment": "^2.17.1",
"path": "^0.12.7",
"postcss": "^5.2.9",
"postcss-cssnext": "^2.9.0",
"rollup": "^0.41.1",
"rollup-plugin-babel": "^2.7.1",
"rollup-plugin-buble": "^0.15.0",
"rollup-plugin-commonjs": "^7.0.0",
"rollup-plugin-includepaths": "^0.1.8",
"rollup-plugin-inject": "^2.0.0",
"rollup-plugin-node-resolve": "^2.0.0",
"rollup-plugin-replace": "^1.1.1",
"rollup-plugin-riot": "^1.1.0"
}