node-api: add napi_float16_array

Fixes: #58873

Author: bnoordhuis

doc/api/n-api.md

@@ -2267,6 +2267,7 @@ 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

@@ -3149,6 +3149,10 @@ napi_status NAPI_CDECL napi_create_typedarray(napi_env env,
       CREATE_TYPED_ARRAY(
           env, Uint32Array, 4, buffer, byte_offset, length, typedArray);
       break;
+    case napi_float16_array:
+      CREATE_TYPED_ARRAY(
+          env, Float16Array, 2, buffer, byte_offset, length, typedArray);
+      break;
     case napi_float32_array:
       CREATE_TYPED_ARRAY(
           env, Float32Array, 4, buffer, byte_offset, length, typedArray);
@@ -3203,6 +3207,8 @@ napi_status NAPI_CDECL napi_get_typedarray_info(napi_env env,
       *type = napi_int32_array;
     } else if (value->IsUint32Array()) {
       *type = napi_uint32_array;
+    } else if (value->IsFloat16Array()) {
+      *type = napi_float16_array;
     } else if (value->IsFloat32Array()) {
       *type = napi_float32_array;
     } else if (value->IsFloat64Array()) {

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

@@ -41,8 +41,9 @@ assert.strictEqual(externalResult[2], 2);
 // Validate creation of all kinds of TypedArrays
 const buffer = new ArrayBuffer(128);
 const arrayTypes = [ Int8Array, Uint8Array, Uint8ClampedArray, Int16Array,
-                     Uint16Array, Int32Array, Uint32Array, Float32Array,
-                     Float64Array, BigInt64Array, BigUint64Array ];
+                     Uint16Array, Int32Array, Uint32Array, Float16Array,
+                     Float32Array, Float64Array, BigInt64Array,
+                     BigUint64Array ];
 
 arrayTypes.forEach((currentType) => {
   const template = Reflect.construct(currentType, buffer);