🤖 Merge PR DefinitelyTyped#74783 Update dom-speech-recognition with on-device changes by @tonyherre

Author: tonyherre

types/dom-speech-recognition/dom-speech-recognition-tests.ts

@@ -36,6 +36,7 @@ const speechRecognition2: SpeechRecognition = {
     interimResults: false,
     lang: "eng",
     maxAlternatives: 2,
+    processLocally: true,
     onaudioend: null,
     onaudiostart: null,
     onend: null,
@@ -84,3 +85,13 @@ const speechRecognitionErrorEventInit: SpeechRecognitionErrorEventInit = {
     message: "abcde",
 };
 const speechRecognitionErrorEvent = new SpeechRecognitionErrorEvent("type", speechRecognitionErrorEventInit);
+
+const speechRecognitionOptions: SpeechRecognitionOptions = {
+    langs: ["en-GB"],
+    processLocally: true,
+};
+
+(async () => {
+    const availability: AvailabilityStatus = await SpeechRecognition.available(speechRecognitionOptions);
+    const installOutcome: boolean = await SpeechRecognition.install(speechRecognitionOptions);
+});

types/dom-speech-recognition/index.d.ts

@@ -20,6 +20,7 @@ interface SpeechRecognition extends EventTarget {
     interimResults: boolean;
     lang: string;
     maxAlternatives: number;
+    processLocally: boolean;
     onaudioend: ((this: SpeechRecognition, ev: Event) => any) | null;
     onaudiostart: ((this: SpeechRecognition, ev: Event) => any) | null;
     onend: ((this: SpeechRecognition, ev: Event) => any) | null;
@@ -56,7 +57,25 @@ interface SpeechRecognition extends EventTarget {
     ): void;
 }
 
-declare var SpeechRecognition: { prototype: SpeechRecognition; new(): SpeechRecognition };
+// https://wicg.github.io/speech-api/#dictdef-speechrecognitionoptions
+interface SpeechRecognitionOptions {
+    langs: string[];
+    processLocally: boolean;
+}
+
+type AvailabilityStatus =
+    | "unavailable"
+    | "downloadable"
+    | "downloading"
+    | "available";
+
+// https://webaudio.github.io/web-speech-api/#speechrecognition
+declare var SpeechRecognition: {
+    prototype: SpeechRecognition;
+    new(): SpeechRecognition;
+    available(options: SpeechRecognitionOptions): Promise<AvailabilityStatus>;
+    install(options: SpeechRecognitionOptions): Promise<boolean>;
+};
 
 // https://wicg.github.io/speech-api/#speechrecognitionevent
 interface SpeechRecognitionEventInit extends EventInit {