node-api: add support for Float16Array

Author: IlyasShabi

doc/api/n-api.md

@@ -2299,6 +2299,7 @@ typedef enum {
   napi_float64_array,
   napi_bigint64_array,
   napi_biguint64_array,
+  napi_float16_array
 } napi_typedarray_type;
 ```
 

src/js_native_api_types.h

@@ -105,6 +105,7 @@ typedef enum {
   napi_float64_array,
   napi_bigint64_array,
   napi_biguint64_array,
+  napi_float16_array,
 } napi_typedarray_type;
 
 typedef enum {

src/js_native_api_v8.cc

@@ -3259,6 +3259,10 @@ napi_status NAPI_CDECL napi_create_typedarray(napi_env env,
       CREATE_TYPED_ARRAY(
           env, BigUint64Array, 8, buffer, byte_offset, length, typedArray);
       break;
+    case napi_float16_array:
+      CREATE_TYPED_ARRAY(
+          env, Float16Array, 2, buffer, byte_offset, length, typedArray);
+      break;
     default:
       return napi_set_last_error(env, napi_invalid_arg);
   }
@@ -3305,6 +3309,8 @@ napi_status NAPI_CDECL napi_get_typedarray_info(napi_env env,
       *type = napi_bigint64_array;
     } else if (value->IsBigUint64Array()) {
       *type = napi_biguint64_array;
+    } else if (value->IsFloat16Array()) {
+      *type = napi_float16_array;
     }
   }
 

test/js-native-api/test_typedarray/test.js

@@ -42,7 +42,7 @@ assert.strictEqual(externalResult[2], 2);
 const buffer = new ArrayBuffer(128);
 const arrayTypes = [ Int8Array, Uint8Array, Uint8ClampedArray, Int16Array,
                      Uint16Array, Int32Array, Uint32Array, Float32Array,
-                     Float64Array, BigInt64Array, BigUint64Array ];
+                     Float64Array, BigInt64Array, BigUint64Array, Float16Array ];
 
 arrayTypes.forEach((currentType) => {
   const template = Reflect.construct(currentType, buffer);
@@ -65,7 +65,7 @@ arrayTypes.forEach((currentType) => {
 
 const nonByteArrayTypes = [ Int16Array, Uint16Array, Int32Array, Uint32Array,
                             Float32Array, Float64Array,
-                            BigInt64Array, BigUint64Array ];
+                            BigInt64Array, BigUint64Array, Float16Array ];
 nonByteArrayTypes.forEach((currentType) => {
   const template = Reflect.construct(currentType, buffer);
   assert.throws(() => {