function isTcharimport { isTchar } from "https://deno.land/x/http_utils@2.0.0-beta.1/token.ts"; isTchar(input: string): input is TcharWhether the input is tchar or not. ExamplesExample 1 import { isTchar } from "https://deno.land/x/http_utils@$VERSION/token.ts"; import { assert, assertFalse, } from "https://deno.land/std/testing/asserts.ts"; assert(isTchar("!")); assert(isTchar("a")); assert(isTchar("Z")); assertFalse(isTchar("")); Parametersinput: stringReturnsinput is Tchar