Expose Stream-related within Stream class

native_client/javascript/index.d.ts

@@ -23,13 +23,6 @@ export interface Metadata {
     transcripts: CandidateTranscript[];
 }
 
-/**
- * @class
- * Provides an interface to a DeepSpeech stream. The constructor cannot be called
- * directly, use :js:func:`Model.createStream`.
- */
-export class Stream {}
-
 /**
  * An object providing an interface to a trained DeepSpeech model.
  *
@@ -120,7 +113,14 @@ sttWithMetadata(aBuffer: object, aNumResults: number): Metadata;
  * @throws on error
  */
 createStream(): object;
+}
 
+/**
+ * @class
+ * Provides an interface to a DeepSpeech stream. The constructor cannot be called
+ * directly, use :js:func:`Model.createStream`.
+ */
+declare class Stream {
 /**
  * Feed audio samples to an ongoing streaming inference.
  *