traverse
traverse and transform objects by visiting every node on a recursive walk
es-iterator-helpers
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
foreach
foreach component + npm package
async-each
No-bullshit, ultra-simple, 35-lines-of-code async parallel forEach / map function for JavaScript.
neotraverse
traverse and transform objects by visiting every node on a recursive walk