function unreachableimport { unreachable } from "https://dotland.deno.dev/std@0.224.0/assert/unreachable.ts"; unreachable(reason?: string): neverUse this to assert unreachable code. ExamplesExample 1 import { unreachable } from "https://deno.land/std@0.224.0/assert/unreachable.ts"; unreachable(); // Throws Parametersoptionalreason: stringReturnsnever