cloudflare web-crypto:
3f279b23-7f61-4ec6-a438-afaa60339535
2836ec8b-e365-417f-b2bf-84105f1eb890
ea83b89d-1fdc-4052-b7c7-76220c50e1fb
81b39e3b-137f-46c0-81c8-5f49015c4845

js random without (OojlIL0):
4cTadBdTTD9u
AwFbHPZ2h23D
UyTKBTwZRwni
rNTv4WrhgdH2

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