use GetBackingStore() instead of GetContents(); upgrade nan version

Author: paulwcy

package.json

@@ -29,8 +29,8 @@
     "async": "2.6.1",
     "find-java-home": "0.2.0",
     "glob": "7.1.3",
-    "lodash": "4.17.14",
-    "nan": "2.14.0"
+    "lodash": "4.17.15",
+    "nan": "2.14.1"
   },
   "devDependencies": {
     "chalk": "2.4.1",

src/utils.cpp

@@ -484,7 +484,11 @@ jvalueType javaGetArrayComponentType(JNIEnv *env, jobjectArray array) {
 #if (NODE_VERSION_AT_LEAST(4, 0, 0))
 v8::Local<v8::ArrayBuffer> newArrayBuffer(void* elems, size_t length) {
   v8::Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(v8::Isolate::GetCurrent(), length);
-  memcpy(ab->GetContents().Data(), elems, length);
+  #if (NODE_MAJOR_VERSION >= 8)
+    memcpy(ab->GetBackingStore()->Data(), elems, length);
+  #else
+    memcpy(ab->GetContents().Data(), elems, length);
+  #endif
   return ab;
 }
 #endif