refactor: take advantage of structured clone algorithm in the remote module (#20427)

lib/common/remote/buffer-utils.ts

@@ -1,71 +0,0 @@
-import { Buffer } from 'buffer'
-
-const typedArrays: Record<string, Function> = {
-  Buffer,
-  ArrayBuffer,
-  Int8Array,
-  Uint8Array,
-  Uint8ClampedArray,
-  Int16Array,
-  Uint16Array,
-  Int32Array,
-  Uint32Array,
-  Float32Array,
-  Float64Array
-}
-
-type BufferLike = Buffer | ArrayBuffer | ArrayBufferView
-
-function getType (value: BufferLike) {
-  for (const type of Object.keys(typedArrays)) {
-    if (value instanceof typedArrays[type]) {
-      return type
-    }
-  }
-  throw new Error('Invalid buffer')
-}
-
-function getBuffer (value: BufferLike) {
-  if (value instanceof Buffer) {
-    return value
-  } else if (value instanceof ArrayBuffer) {
-    return Buffer.from(value)
-  } else {
-    return Buffer.from(value.buffer, value.byteOffset, value.byteLength)
-  }
-}
-
-export function isBuffer (value: BufferLike) {
-  return ArrayBuffer.isView(value) || value instanceof ArrayBuffer
-}
-
-export interface BufferMeta {
-  type: keyof typeof typedArrays;
-  data: Buffer;
-  length: number | undefined;
-}
-
-export function bufferToMeta (value: BufferLike): BufferMeta {
-  return {
-    type: getType(value),
-    data: getBuffer(value),
-    // NB. We only use length when decoding Int8Array and friends.
-    // For other buffer-like types this is expected to be undefined.
-    length: (value as Buffer).length
-  }
-}
-
-export function metaToBuffer (value: BufferMeta) {
-  const constructor = typedArrays[value.type]
-  const data = getBuffer(value.data)
-
-  if (constructor === Buffer) {
-    return data
-  } else if (constructor === ArrayBuffer) {
-    return data.buffer
-  } else if (constructor) {
-    return new (constructor as any)(data.buffer, data.byteOffset, value.length)
-  } else {
-    return data
-  }
-}

lib/common/remote/type-utils.ts

@@ -10,3 +10,16 @@ export function isPromise (val: any) {
     val.constructor.resolve instanceof Function
   )
 }
+
+const serializableTypes = [
+  Boolean,
+  Number,
+  String,
+  Date,
+  RegExp,
+  ArrayBuffer
+]
+
+export function isSerializableObject (value: any) {
+  return value === null || ArrayBuffer.isView(value) || serializableTypes.some(type => value instanceof type)
+}