isNone
import { isNone } from "https://github.gh-proxy.cn/raw.githubusercontent.com/baetheus/fun/main/datum.ts";Check if a Datum has no value (Initial or Pending).
@example
import { isNone, initial, pending, replete } from "./datum.ts";
console.log(isNone(initial)); // true
console.log(isNone(pending)); // true
console.log(isNone(replete("data"))); // false