Add DataView support, update RecognizedString type (#1258)

Author: ValoChet

docs/index.d.ts

@@ -47,10 +47,11 @@ export interface AppDescriptor {
  * This because we expect UTF-8, which is packed in 8-byte chars. JavaScript strings are UTF-16 internally meaning extra copies and reinterpretation are required.
  *
  * That's why all events pass data by ArrayBuffer and not JavaScript strings, as they allow zero-copy data passing.
- *
  * You can always do Buffer.from(arrayBuffer).toString(), but keeping things binary and as ArrayBuffer is preferred.
+ * 
+ * The ArrayBufferView type includes Node.js Buffer, DataView, and TypedArray (Uint8Array, Uint16Array, ...).
  */
-export type RecognizedString = string | ArrayBuffer | Uint8Array | Int8Array | Uint16Array | Int16Array | Uint32Array | Int32Array | Float32Array | Float64Array;
+export type RecognizedString = string | ArrayBuffer | SharedArrayBuffer | ArrayBufferView;
 
 /** A WebSocket connection that is valid from open to close event.
  * Read more about this in the user manual.

docs/tsconfig.json

@@ -1,5 +1,8 @@
 {
 	"files": [ "index.d.ts" ],
+	"compilerOptions": {
+		"lib": [ "es2017" ]
+	},
 	"typedocOptions": {
 		"name":"uWebSockets.js v20.61.0 documentation",
 		"entryPoints": [ "index.d.ts" ],

src/Utilities.h

@@ -133,7 +133,7 @@ class NativeString {
             utf8Value = new (utf8ValueMemory) String::Utf8Value(isolate, value);
             data = (**utf8Value);
             length = utf8Value->length();
-        } else if (value->IsTypedArray()) {
+        } else if (value->IsArrayBufferView()) { /* DataView or TypedArray */
             Local<ArrayBufferView> arrayBufferView = Local<ArrayBufferView>::Cast(value);
             auto contents = arrayBufferView->Buffer()->GetBackingStore();
             length = arrayBufferView->ByteLength();
@@ -155,7 +155,7 @@ class NativeString {
 
     bool isInvalid(const FunctionCallbackInfo<Value> &args) {
         if (invalid) {
-            args.GetReturnValue().Set(args.GetIsolate()->ThrowException(v8::Exception::Error(String::NewFromUtf8(args.GetIsolate(), "Text and data can only be passed by String, ArrayBuffer or TypedArray.", NewStringType::kNormal).ToLocalChecked())));
+            args.GetReturnValue().Set(args.GetIsolate()->ThrowException(v8::Exception::Error(String::NewFromUtf8(args.GetIsolate(), "Text and data can only be passed by String, ArrayBuffer, SharedArrayBuffer or ArrayBufferView.", NewStringType::kNormal).ToLocalChecked())));
         }
         return invalid;
     }