I'm trying to

import { randomBytes } from 'crypto'

in my local pages dev. My command line is:

npx wrangler pages dev \
  --compatibility-flags="nodejs_compat" --experimental-local \
  --kv=SOMETHING --kv=TEST --kv=CONFIG \
  --do TEST_DO=TestDO@test-do-dev \
  --d1=TEST_DB --persist \
  -- npm start

However, the build fails with message:

The package "crypto" wasn't found on the file system but is built into node.
  Add the "nodejs_compat" compatibility flag to your Pages project to enable Node.js compatibility.

Any ideas what I'm doing wrong?