function isHeximport { isHex } from "https://dotland.deno.dev/x/polkadot@0.2.35/util/index.ts"; isHex(value: unknown,bitLength?,ignoreLength?: boolean,): value is HexStringExamples import { isHex } from 'https://deno.land/x/polkadot@0.2.35/util/mod.ts'; isHex('0x1234'); // => true isHex('0x1234', 8); // => false Parametersvalue: unknownoptionalbitLength = [UNSUPPORTED]optionalignoreLength: booleanReturnsvalue is HexString