Add support for TypedArrays in IPC.

filenames.gypi

@@ -44,6 +44,7 @@
       'lib/common/api/deprecate.js',
       'lib/common/api/deprecations.js',
       'lib/common/api/is-promise.js',
+      'lib/common/api/is-typed-array.js',
       'lib/common/api/exports/electron.js',
       'lib/common/api/native-image.js',
       'lib/common/api/shell.js',

lib/browser/rpc-server.js

@@ -2,7 +2,7 @@
 
 const electron = require('electron')
 const v8Util = process.atomBinding('v8_util')
-const {ipcMain, isPromise, webContents} = electron
+const {ipcMain, isPromise, isTypedArray, webContents} = electron
 
 const objectsRegistry = require('./objects-registry')
 
@@ -63,6 +63,8 @@ let valueToMeta = function (sender, value, optimizeSimpleObject = false) {
       meta.type = 'buffer'
     } else if (Array.isArray(value)) {
       meta.type = 'array'
+    } else if (isTypedArray(value)) {
+      meta.type = 'typed-array'
     } else if (value instanceof Error) {
       meta.type = 'error'
     } else if (value instanceof Date) {
@@ -149,6 +151,8 @@ const unwrapArgs = function (sender, args) {
         return unwrapArgs(sender, meta.value)
       case 'buffer':
         return new Buffer(meta.value)
+      case 'typed-array':
+        return Buffer.from(meta.value)
       case 'date':
         return new Date(meta.value)
       case 'promise':

lib/common/api/exports/electron.js

@@ -48,6 +48,11 @@ exports.defineProperties = function (exports) {
       get: function () {
         return require('../is-promise')
       }
+    },
+    isTypedArray: {
+      get: function () {
+        return require('../is-typed-array')
+      }
     }
   })
 }

lib/common/api/is-typed-array.js

@@ -0,0 +1,17 @@
+'use strict'
+
+module.exports = function isTypedArray (val) {
+  return (
+    val &&
+    (val instanceof Int8Array ||
+     val instanceof Int16Array ||
+     val instanceof Int32Array ||
+     val instanceof Uint8Array ||
+     val instanceof Uint8ClampedArray ||
+     val instanceof Uint16Array ||
+     val instanceof Uint32Array ||
+     val instanceof Float32Array ||
+     val instanceof Float64Array) ||
+    (Object.prototype.toString.call(val).substr(-6, 5) === 'Array')
+  )
+}

lib/renderer/api/remote.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const v8Util = process.atomBinding('v8_util')
-const {ipcRenderer, isPromise, CallbacksRegistry} = require('electron')
+const {ipcRenderer, isPromise, isTypedArray, CallbacksRegistry} = require('electron')
 
 const callbacksRegistry = new CallbacksRegistry()
 
@@ -35,6 +35,11 @@ const wrapArgs = function (args, visited) {
         type: 'buffer',
         value: Array.prototype.slice.call(value, 0)
       }
+    } else if (isTypedArray(value)) {
+      return {
+        type: 'typed-array',
+        value: Array.prototype.slice.call(value)
+      }
     } else if (value instanceof Date) {
       return {
         type: 'date',
@@ -164,6 +169,8 @@ const metaToValue = function (meta) {
       return results
     case 'buffer':
       return new Buffer(meta.value)
+    case 'typed-array':
+      return Buffer.from(meta.value)
     case 'promise':
       return Promise.resolve({
         then: metaToValue(meta.then)