Babelify and native Node modules

Question

Is there a way to import native Node modules (e.g. crypto, fs, path) when using Babelify with Browserify?

For example:

'use strict'; import $ from 'jquery'; import fs from 'fs'; // <------ this line causes an error var data = JSON.parse(fs.readFileSync('foo.json', 'utf8')); $(document).ready(function () { // stuff });

Browserify gives me this error when I try to run it:

Error: tried to statically call { readFile: [Function: readFile], readFileSync: [Function: readFileSync], readdir: [Function: readdir], readdirSync: [Function: readdirSync] } as a function while parsing file: /home/vincent/www/project1/resources/js/foo.js while parsing file: /home/vincent/www/project1/resources/js/foo.js

I've also tried the following with the same results:

import * as fs from 'fs'; import { fs } from fs;

I think that primarily depends on how the module is exporting the values. — Felix Kling
– Felix Kling, Commented Jan 5, 2016 at 5:22
@FelixKling Ok but neither jquery nor fs export any modules so why does Babelify only pick up jquery? — rink.attendant.6
– rink.attendant.6, Commented Jan 5, 2016 at 5:24
Uh? Of course fs exports something, it is a module after all. Looking at its source, it does something similar to exports.foo = 42;, so import * as fs from 'fs'; should work IMO. This may help: 2ality.com/2015/12/babel-commonjs.html — Felix Kling
– Felix Kling, Commented Jan 5, 2016 at 5:32
@FelixKling Oh I thought you meant export as in the ES6 export. Anyways I found out that it doesn't work due to breaking static analysis: github.com/babel/babelify/issues/81 — rink.attendant.6
– rink.attendant.6, Commented Jan 5, 2016 at 5:38
Ah right. Importing is not the issue, but usage with browersify. — Felix Kling
– Felix Kling, Commented Jan 5, 2016 at 5:42

rink.attendant.6 · Accepted Answer · 2016-01-05 05:41:15Z

This is a known issue with brfs and Babelify:

It will eventually be possible once static-module can handle ES6 imports. For now you need to 'require' brfs with CommonJS syntax, and run the brfs transform after babelify.

Sources:

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