refactor: prefer built-in EmscriptenSendCommand when possible

Author: arianrhodsandlot

src/classes/emulator.ts

@@ -295,6 +295,8 @@ export class Emulator {
     const { Module } = this.getEmscripten()
     if (exportedCommand[msg] && exportedCommand[msg] in Module) {
       this.callCommand(exportedCommand[msg])
+    } else if ('EmscriptenSendCommand' in Module) {
+      Module.EmscriptenSendCommand(msg)
     } else {
       const bytes = textEncoder.encode(`${msg}\n`)
       this.messageQueue.push([bytes, 0])

src/types/retroarch-emscripten.ts

@@ -2,6 +2,8 @@ export interface RetroArchEmscriptenModule extends EmscriptenModule {
   asm: any
   callMain: (args: string[]) => void
   canvas: HTMLCanvasElement
+  // eslint-disable-next-line @typescript-eslint/naming-convention
+  EmscriptenSendCommand?: (command: string) => void
   ERRNO_CODES: any
   FS: any
   monitorRunDependencies: (left?: number) => Promise<void> | void