function isStringimport { isString } from "https://deno.land/x/etag_middleware@1.1.0/deps.ts"; isString(input: unknown): input is stringWhether the input is string or not. ExamplesExample 1 import { isString } from "https://deno.land/x/isx@$VERSION/is_string.ts" import { assertEquals } from "https://deno.land/std/testing/asserts.ts" assertEquals(isString('hello world'), true) assertEquals(isString(1000), false) Parametersinput: unknown Any input. Returnsinput is string