Tree-shaking does not work for Hyntax modules

[mykolaharmash]

See this issue for more context.

Parcel and other bundlers seams to bundle polyfills for Node.js streams even when Hyntax stream modules are not imported to the user's code. e.g. this code:

const { tokenize, constructTree } = require('hyntax')

will result in Stream polyfill in the bundle.

As a workaround user can import from individual files:

const tokenize = require('hyntax/lib/tokenize')
const constructTree = require('hyntax/lib/construct-tree')