Nanos
import type { Nanos } from "https://raw.githubusercontent.com/nats-io/nats.deno/v1.28.2/nats-base-client/internal_mod.ts";
Value expressed as Nanoseconds - use the nanos(millis)
function
to convert millis to nanoseconds. Note that in some environments this
could overflow.
type Nanos = number;