@seriousme/opifex/mqttPacket/validators.ts

MQTT client & server for Deno & NodeJS

import type { Topic, TopicFilter } from "./types.ts";

// deno-lint-ignore no-control-regex
const invalidUTF8regEx = new RegExp(/\x00|\uFFFD/);
// deno-lint-ignore no-control-regex
const invalidTopicRegEx = new RegExp(/^$|\+|#|\x00|\uFFFD/);
// deno-lint-ignore no-control-regex
const invalidTopicFilterRegEx = new RegExp(/^$|#.|[^\/]\+|\+[^\/]|\x00|\uFFFD/);

export function invalidUTF8(value: string): boolean {
  return invalidUTF8regEx.test(value);
}

export function invalidTopic(value: Topic): boolean {
  return invalidTopicRegEx.test(value);
}

export function invalidTopicFilter(value: TopicFilter): boolean {
  return invalidTopicFilterRegEx.test(value);
}