function unreachableimport { unreachable } from "https://dotland.deno.dev/x/proc@0.21.9/tests/deps/asserts.ts"; unreachable(): neverUse this to assert unreachable code. ExamplesExample 1 import { unreachable } from "https://deno.land/std@$STD_VERSION/assert/unreachable.ts"; unreachable(); // Throws Returnsnever