cloudflare web-crypto:
47d31ce5-e9fb-4003-8a3f-2ba09d4c1cc5
afd1d035-e50a-43bb-a194-8253ef368f73
b531426e-0dec-4266-8d74-56757afce9a1
15afe197-dafa-411f-b6d4-597023cc1dd6

js random without (OojlIL0):
QRKwK7MGTsXA
uKUcqMdfmzNF
ekmbNne3RD6h
PPSkTyKrkZDP

code at https://github.com/SCys/cloudflare_worker_random