crypto.randomBytes is not a function

[irelandscape]

I'm having an issue in a vue.js application using steem-js and steemit/libcrypto.js.

require('steem.js')

throws the following exception:
TypeError: crypto.randomBytes is not a function

raised in the "nodeRandom" function of secure-random.js
It looks like nodeRandom invokes:
require('crypto')
then "randomBytes" on the result.

However require('crypto') is returning an empty object in my environment.
I'm wondering if steemit/libcrypto-js is clashing with node.js crypto.

Thanks for your assistance!