feat: add speechstarted event to sdk (#235)

Author: lukeocodes

src/lib/enums/LiveTranscriptionEvents.ts

@@ -6,4 +6,5 @@ export enum LiveTranscriptionEvents {
   Error = "error",
   Warning = "warning",
   UtteranceEnd = "UtteranceEnd", // exact match to data type from API
+  SpeechStarted = "SpeechStarted",
 }

src/lib/types/SpeechStartedEvent.ts

@@ -0,0 +1,5 @@
+export interface SpeechStartedEvent {
+  type: "SpeechStarted";
+  channel: number[];
+  timestamp: number;
+}

src/lib/types/index.ts

@@ -42,6 +42,7 @@ export type {
   AnalyzeSource,
 } from "./DeepgramSource";
 export type { SendProjectInviteSchema } from "./SendProjectInviteSchema";
+export type { SpeechStartedEvent } from "./SpeechStartedEvent";
 export type { SyncPrerecordedResponse } from "./SyncPrerecordedResponse";
 export type { SyncAnalyzeResponse } from "./SyncAnalyzeResponse";
 export type { TranscriptionSchema, PrerecordedSchema, LiveSchema } from "./TranscriptionSchema";

src/packages/LiveClient.ts

@@ -12,6 +12,7 @@ import type {
   LiveTranscriptionEvent,
   DeepgramClientOptions,
   UtteranceEndEvent,
+  SpeechStartedEvent,
 } from "../lib/types";
 
 export class LiveClient extends AbstractWsClient {
@@ -58,6 +59,10 @@ export class LiveClient extends AbstractWsClient {
         if (data.type === LiveTranscriptionEvents.UtteranceEnd) {
           this.emit(LiveTranscriptionEvents.UtteranceEnd, data as UtteranceEndEvent);
         }
+
+        if (data.type === LiveTranscriptionEvents.SpeechStarted) {
+          this.emit(LiveTranscriptionEvents.SpeechStarted, data as SpeechStartedEvent);
+        }
       } catch (error) {
         this.emit(LiveTranscriptionEvents.Error, {
           event,