Function guardArray

Given a Type Guard, returns a Type Guard that checks if the given value is an array and matches the given Type Guard.

Example

import { guardArray } from 'type-guard-helpers';

const isStringArray = guardArray(
    (value): value is readonly string[] =>
        value.findIndex((item) => typeof item !== 'string') === -1
);

const test = {} as unknown;
if (isStringArray(test)) {
      test; // test: readonly string[]
}