feat: add concatArrayBuffers

src/common/helpers.ts

@@ -77,6 +77,7 @@ export function clamp(min: number, max: number, n: number): number {
 
 /**
  * @see https://stackoverflow.com/a/49129872/1806628
+ * @deprecated This will be superceeded by concatArrayBuffers
  */
 export function concatUint8Arrays(buffers: Uint8Array[]): Uint8Array {
   if (buffers.length === 0) {
@@ -97,3 +98,26 @@ export function concatUint8Arrays(buffers: Uint8Array[]): Uint8Array {
 
   return combinedBuffer
 }
+
+/**
+ * @see https://stackoverflow.com/a/49129872/1806628
+ */
+export function concatArrayBuffers(buffers: ArrayBuffer[]): ArrayBuffer {
+  if (buffers.length === 0) {
+    return new ArrayBuffer(0)
+  }
+
+  const totalLength = buffers.reduce((sum, buffer) => {
+    return sum + buffer.byteLength
+  }, 0)
+
+  const combinedBuffer = new Uint8Array(totalLength)
+
+  let offset = 0
+  buffers.forEach((buffer) => {
+    combinedBuffer.set(new Uint8Array(buffer), offset)
+    offset = offset + buffer.byteLength
+  })
+
+  return combinedBuffer.buffer
+}