bytebeat-render.js: explicit GC

js-programming/bytebeat-render.js

@@ -106,6 +106,8 @@ for (let buffer = 0; t < PRODUCT; buffer++) {
 	}
 
 	appendFileSync(fileName, Buffer.from(audioData.buffer))
+
+	audioData = null
 }
 
 execSync(`ffmpeg -f u8 -ar ${FINAL_SAMPLE_RATE} -ac ${CHANNELS} -i ${fileName} output_${+new Date()}.wav`)