Allow SlippiGame to accept an ArrayBuffer (#77)

* Allow SlippiGame to accept an ArrayBuffer

* Allow SlippiGame to accept an ArrayBuffer

* add test for arraybuffer input

Co-authored-by: Vince Au <vinceau09@gmail.com>

src/SlippiGame.ts

@@ -32,7 +32,7 @@ export class SlippiGame {
   private inputComputer: InputComputer = new InputComputer();
   private statsComputer: Stats;
 
-  public constructor(input: string | Buffer, opts?: StatOptions) {
+  public constructor(input: string | Buffer | ArrayBuffer, opts?: StatOptions) {
     if (_.isString(input)) {
       this.input = {
         source: SlpInputSource.FILE,
@@ -43,6 +43,11 @@ export class SlippiGame {
         source: SlpInputSource.BUFFER,
         buffer: input,
       };
+    } else if (input instanceof ArrayBuffer) {
+      this.input = {
+        source: SlpInputSource.BUFFER,
+        buffer: Buffer.from(input),
+      };
     } else {
       throw new Error("Cannot create SlippiGame with input of that type");
     }

test/game.spec.ts

@@ -119,6 +119,16 @@ it("should be able to support reading from a buffer input", () => {
   expect(_.last(settings.players).characterId).toBe(0xe);
 });
 
+it("should be able to support reading from an array buffer input", () => {
+  const buf = fs.readFileSync("slp/sheik_vs_ics_yoshis.slp");
+  const arrayBuf = buf.buffer;
+  const game = new SlippiGame(arrayBuf);
+  const settings = game.getSettings();
+  expect(settings.stageId).toBe(8);
+  expect(_.first(settings.players).characterId).toBe(0x13);
+  expect(_.last(settings.players).characterId).toBe(0xe);
+});
+
 it("should support realtime parsing", () => {
   const fullData = fs.readFileSync("slp/realtimeTest.slp");
   const buf = Buffer.alloc(100e6); // Allocate 100 MB of space