@freddydrodev/artyom/src/types/web-speech-api.d.ts

Artyom is a Robust Wrapper of the Google Chrome SpeechSynthesis and SpeechRecognition that allows you to create a virtual assistent

interface SpeechRecognitionEvent extends Event {
  readonly results: SpeechRecognitionResultList;
  readonly resultIndex: number;
  readonly error: any;
  readonly message: string;
}

interface SpeechRecognitionResultList {
  readonly length: number;
  item(index: number): SpeechRecognitionResult;
  [index: number]: SpeechRecognitionResult;
}

interface SpeechRecognitionResult {
  readonly isFinal: boolean;
  [index: number]: SpeechRecognitionAlternative;
}

interface SpeechRecognitionAlternative {
  readonly transcript: string;
  readonly confidence: number;
}

interface SpeechRecognitionErrorEvent extends Event {
  readonly error: string;
  readonly message: string;
}

interface SpeechRecognition extends EventTarget {
  continuous: boolean;
  interimResults: boolean;
  lang: string;
  start(): void;
  stop(): void;
  abort(): void;
  onresult: (event: SpeechRecognitionEvent) => void;
  onerror: (event: SpeechRecognitionErrorEvent) => void;
  onend: () => void;
}

declare var SpeechRecognition: {
  prototype: SpeechRecognition;
  new (): SpeechRecognition;
};

declare var webkitSpeechRecognition: {
  prototype: SpeechRecognition;
  new (): SpeechRecognition;
};