import { isReadonlyUniformTupleOf } from "https://deno.land/x/unknownutil@v3.13.0/mod.ts";
Return a type predicate function that returns true
if the type of x
is ReadonlyUniformTupleOf<T>
.
import { is } from "https://deno.land/x/unknownutil@v3.13.0/mod.ts";
const a: unknown = [0, 1, 2, 3, 4];
if (is.ReadonlyUniformTupleOf(5)(a)) {
// a is narrowed to readonly [unknown, unknown, unknown, unknown, unknown]
const _: readonly [unknown, unknown, unknown, unknown, unknown] = a;
}
if (is.ReadonlyUniformTupleOf(5, is.Number)(a)) {
// a is narrowed to readonly [number, number, number, number, number]
const _: readonly [number, number, number, number, number] = a;
}