add @discordjs/opus + jmd.js

node_modules/prism-media/typings/index.d.ts

@@ -8,12 +8,14 @@ import { vorbis } from './vorbis';
 
 export interface FFmpegOptions {
   args?: string[];
+  shell?: boolean;
 }
 
 export interface FFmpegInfo {
   command: string;
   info: string;
   version: string;
+  output: string;
 }
 
 export class FFmpeg extends Duplex {