fix(chat): speech to text interface declaration

Author: ivanvpetrov

src/components/chat/chat-input.ts

@@ -201,6 +201,10 @@ export default class IgcChatInputComponent extends LitElement {
         // console.error('No STT service configured');
       }
 
+      if (!this._sttClient) {
+        return;
+      }
+
       await this._sttClient.start(this._state.options?.speechToText?.lang);
       this.isRecording = true;
       this.isStopInProgress = false;

src/components/chat/extras/stt-client-webspeech.ts

@@ -60,3 +60,40 @@ export class WebSpeechSttClient extends BaseSttClient {
     this.restartGracePeriod();
   }
 }
+
+//Fix. Add own interface declaration for SpeechRecognition
+declare global {
+  interface Window {
+    SpeechRecognition: typeof SpeechRecognition;
+    webkitSpeechRecognition: typeof SpeechRecognition;
+  }
+
+  // The browser’s Web Speech API type (simplified)
+  var SpeechRecognition: {
+    new (): SpeechRecognition;
+  };
+
+  interface SpeechRecognition extends EventTarget {
+    continuous: boolean;
+    interimResults: boolean;
+    lang: string;
+    start(): void;
+    stop(): void;
+    abort(): void;
+    onaudioend?: (this: SpeechRecognition, ev: Event) => any;
+    onaudiostart?: (this: SpeechRecognition, ev: Event) => any;
+    onend?: (this: SpeechRecognition, ev: Event) => any;
+    onerror?: (this: SpeechRecognition, ev: Event) => any;
+    onnomatch?: (this: SpeechRecognition, ev: Event) => any;
+    onresult?: (this: SpeechRecognition, ev: SpeechRecognitionEvent) => any;
+    onsoundend?: (this: SpeechRecognition, ev: Event) => any;
+    onsoundstart?: (this: SpeechRecognition, ev: Event) => any;
+    onspeechend?: (this: SpeechRecognition, ev: Event) => any;
+    onspeechstart?: (this: SpeechRecognition, ev: Event) => any;
+    onstart?: (this: SpeechRecognition, ev: Event) => any;
+  }
+
+  interface SpeechRecognitionEvent extends Event {
+    results: SpeechRecognitionResultList;
+  }
+}