Removing Node dependencies when bundling fengari for the browser

[flowtsohg]

🙋 feature request

Better support for fengari bundling for the browser.

🤔 Expected Behavior

When bundling for the browser, I expect node modules such as fs not to be bundled.

😯 Current Behavior

Such modules are bundled and waste time and size.

💁 Possible Solution

fengari uses the following condition:

if (typeof process === 'undefined') {
 // browser
} else {
 // node
}

This doesn't support webpack or parcel properly, however in webpack it can be solved by defining the following:

new webpack.DefinePlugin({
  'typeof process': JSON.stringify('undefined'),
})

Would love a solution for parcel.