diff --git a/PORTING.md b/PORTING.md
index 657cbb3..4eae61a 100644
--- a/PORTING.md
+++ b/PORTING.md
@@ -71,7 +71,7 @@ Tests covering the engine-specific part of Node-API, defined in `js_native_api.h
 | `test_sharedarraybuffer`     | Not ported | Medium     |
 | `test_string`                | Not ported | Medium     |
 | `test_symbol`                | Ported ✅  | Easy       |
-| `test_typedarray`            | Not ported | Medium     |
+| `test_typedarray`            | Ported ✅  | Medium     |
 
 ## Runtime-specific (`node-api`)
 
diff --git a/tests/js-native-api/test_typedarray/CMakeLists.txt b/tests/js-native-api/test_typedarray/CMakeLists.txt
new file mode 100644
index 0000000..e6aa327
--- /dev/null
+++ b/tests/js-native-api/test_typedarray/CMakeLists.txt
@@ -0,0 +1 @@
+add_node_api_cts_addon(test_typedarray test_typedarray.c)
diff --git a/tests/js-native-api/test_typedarray/test.js b/tests/js-native-api/test_typedarray/test.js
new file mode 100644
index 0000000..9eb428b
--- /dev/null
+++ b/tests/js-native-api/test_typedarray/test.js
@@ -0,0 +1,132 @@
+"use strict";
+
+// Testing api calls for arrays
+const test_typedarray = loadAddon("test_typedarray");
+
+const byteArray = new Uint8Array(3);
+byteArray[0] = 0;
+byteArray[1] = 1;
+byteArray[2] = 2;
+assert.strictEqual(byteArray.length, 3);
+
+const doubleArray = new Float64Array(3);
+doubleArray[0] = 0.0;
+doubleArray[1] = 1.1;
+doubleArray[2] = 2.2;
+assert.strictEqual(doubleArray.length, 3);
+
+const byteResult = test_typedarray.Multiply(byteArray, 3);
+assert.ok(byteResult instanceof Uint8Array);
+assert.strictEqual(byteResult.length, 3);
+assert.strictEqual(byteResult[0], 0);
+assert.strictEqual(byteResult[1], 3);
+assert.strictEqual(byteResult[2], 6);
+
+const doubleResult = test_typedarray.Multiply(doubleArray, -3);
+assert.ok(doubleResult instanceof Float64Array);
+assert.strictEqual(doubleResult.length, 3);
+assert.strictEqual(doubleResult[0], -0);
+assert.strictEqual(Math.round(10 * doubleResult[1]) / 10, -3.3);
+assert.strictEqual(Math.round(10 * doubleResult[2]) / 10, -6.6);
+
+const externalResult = test_typedarray.External();
+assert.ok(externalResult instanceof Int8Array);
+assert.strictEqual(externalResult.length, 3);
+assert.strictEqual(externalResult[0], 0);
+assert.strictEqual(externalResult[1], 1);
+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,
+  Float16Array,
+  Float32Array,
+  Float64Array,
+  BigInt64Array,
+  BigUint64Array,
+];
+
+arrayTypes.forEach((currentType) => {
+  const template = Reflect.construct(currentType, buffer);
+  const theArray = test_typedarray.CreateTypedArray(template, buffer);
+
+  assert.ok(
+    theArray instanceof currentType,
+    "Type of new array should match that of the template. " +
+      `Expected type: ${currentType.name}, ` +
+      `actual type: ${template.constructor.name}`,
+  );
+  assert.notStrictEqual(theArray, template);
+  assert.strictEqual(theArray.buffer, buffer);
+});
+
+arrayTypes.forEach((currentType) => {
+  const template = Reflect.construct(currentType, buffer);
+  assert.throws(() => {
+    test_typedarray.CreateTypedArray(template, buffer, 0, 136);
+  }, RangeError);
+});
+
+const nonByteArrayTypes = [
+  Int16Array,
+  Uint16Array,
+  Int32Array,
+  Uint32Array,
+  Float16Array,
+  Float32Array,
+  Float64Array,
+  BigInt64Array,
+  BigUint64Array,
+];
+nonByteArrayTypes.forEach((currentType) => {
+  const template = Reflect.construct(currentType, buffer);
+  assert.throws(() => {
+    test_typedarray.CreateTypedArray(
+      template,
+      buffer,
+      currentType.BYTES_PER_ELEMENT + 1,
+      1,
+    );
+    console.log(`start of offset ${currentType}`);
+  }, RangeError);
+});
+
+// Test detaching
+arrayTypes.forEach((currentType) => {
+  const buffer = Reflect.construct(currentType, [8]);
+  assert.strictEqual(buffer.length, 8);
+  assert.ok(!test_typedarray.IsDetached(buffer.buffer));
+  test_typedarray.Detach(buffer);
+  assert.ok(test_typedarray.IsDetached(buffer.buffer));
+  assert.strictEqual(buffer.length, 0);
+});
+{
+  const buffer = test_typedarray.External();
+  assert.ok(externalResult instanceof Int8Array);
+  assert.strictEqual(externalResult.length, 3);
+  assert.strictEqual(externalResult.byteLength, 3);
+  assert.ok(!test_typedarray.IsDetached(buffer.buffer));
+  test_typedarray.Detach(buffer);
+  assert.ok(test_typedarray.IsDetached(buffer.buffer));
+  assert.ok(externalResult instanceof Int8Array);
+  assert.strictEqual(buffer.length, 0);
+  assert.strictEqual(buffer.byteLength, 0);
+}
+
+{
+  const buffer = new ArrayBuffer(128);
+  assert.ok(!test_typedarray.IsDetached(buffer));
+}
+
+{
+  const buffer = test_typedarray.NullArrayBuffer();
+  assert.ok(buffer instanceof ArrayBuffer);
+  assert.ok(test_typedarray.IsDetached(buffer));
+}
diff --git a/tests/js-native-api/test_typedarray/test_typedarray.c b/tests/js-native-api/test_typedarray/test_typedarray.c
new file mode 100644
index 0000000..7b4241b
--- /dev/null
+++ b/tests/js-native-api/test_typedarray/test_typedarray.c
@@ -0,0 +1,248 @@
+#include <js_native_api.h>
+#include <stdlib.h>
+#include <string.h>
+#include "../common.h"
+#include "../entry_point.h"
+
+static napi_value Multiply(napi_env env, napi_callback_info info) {
+  size_t argc = 2;
+  napi_value args[2];
+  NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
+
+  NODE_API_ASSERT(env, argc == 2, "Wrong number of arguments");
+
+  napi_valuetype valuetype0;
+  NODE_API_CALL(env, napi_typeof(env, args[0], &valuetype0));
+
+  NODE_API_ASSERT(env, valuetype0 == napi_object,
+      "Wrong type of arguments. Expects a typed array as first argument.");
+
+  napi_value input_array = args[0];
+  bool is_typedarray;
+  NODE_API_CALL(env, napi_is_typedarray(env, input_array, &is_typedarray));
+
+  NODE_API_ASSERT(env, is_typedarray,
+      "Wrong type of arguments. Expects a typed array as first argument.");
+
+  napi_valuetype valuetype1;
+  NODE_API_CALL(env, napi_typeof(env, args[1], &valuetype1));
+
+  NODE_API_ASSERT(env, valuetype1 == napi_number,
+      "Wrong type of arguments. Expects a number as second argument.");
+
+  double multiplier;
+  NODE_API_CALL(env, napi_get_value_double(env, args[1], &multiplier));
+
+  napi_typedarray_type type;
+  napi_value input_buffer;
+  size_t byte_offset;
+  size_t i, length;
+  NODE_API_CALL(env, napi_get_typedarray_info(
+      env, input_array, &type, &length, NULL, &input_buffer, &byte_offset));
+
+  void* data;
+  size_t byte_length;
+  NODE_API_CALL(env, napi_get_arraybuffer_info(
+      env, input_buffer, &data, &byte_length));
+
+  napi_value output_buffer;
+  void* output_ptr = NULL;
+  NODE_API_CALL(env, napi_create_arraybuffer(
+      env, byte_length, &output_ptr, &output_buffer));
+
+  napi_value output_array;
+  NODE_API_CALL(env, napi_create_typedarray(
+      env, type, length, output_buffer, byte_offset, &output_array));
+
+  if (type == napi_uint8_array) {
+    uint8_t* input_bytes = (uint8_t*)(data) + byte_offset;
+    uint8_t* output_bytes = (uint8_t*)(output_ptr);
+    for (i = 0; i < length; i++) {
+      output_bytes[i] = (uint8_t)(input_bytes[i] * multiplier);
+    }
+  } else if (type == napi_float64_array) {
+    double* input_doubles = (double*)((uint8_t*)(data) + byte_offset);
+    double* output_doubles = (double*)(output_ptr);
+    for (i = 0; i < length; i++) {
+      output_doubles[i] = input_doubles[i] * multiplier;
+    }
+  } else {
+    napi_throw_error(env, NULL,
+        "Typed array was of a type not expected by test.");
+    return NULL;
+  }
+
+  return output_array;
+}
+
+static void FinalizeCallback(node_api_basic_env env,
+                             void* finalize_data,
+                             void* finalize_hint) {
+  free(finalize_data);
+}
+
+static napi_value External(napi_env env, napi_callback_info info) {
+  const uint8_t nElem = 3;
+  int8_t* externalData = malloc(nElem*sizeof(int8_t));
+  externalData[0] = 0;
+  externalData[1] = 1;
+  externalData[2] = 2;
+
+  napi_value output_buffer;
+  NODE_API_CALL(env, napi_create_external_arraybuffer(
+      env,
+      externalData,
+      nElem*sizeof(int8_t),
+      FinalizeCallback,
+      NULL,  // finalize_hint
+      &output_buffer));
+
+  napi_value output_array;
+  NODE_API_CALL(env, napi_create_typedarray(env,
+      napi_int8_array,
+      nElem,
+      output_buffer,
+      0,
+      &output_array));
+
+  return output_array;
+}
+
+
+static napi_value NullArrayBuffer(napi_env env, napi_callback_info info) {
+  static void* data = NULL;
+  napi_value arraybuffer;
+  NODE_API_CALL(env,
+      napi_create_external_arraybuffer(env, data, 0, NULL, NULL, &arraybuffer));
+  return arraybuffer;
+}
+
+static napi_value CreateTypedArray(napi_env env, napi_callback_info info) {
+  size_t argc = 4;
+  napi_value args[4];
+  NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
+
+  NODE_API_ASSERT(env, argc == 2 || argc == 4, "Wrong number of arguments");
+
+  napi_value input_array = args[0];
+  napi_valuetype valuetype0;
+  NODE_API_CALL(env, napi_typeof(env, input_array, &valuetype0));
+
+  NODE_API_ASSERT(env, valuetype0 == napi_object,
+      "Wrong type of arguments. Expects a typed array as first argument.");
+
+  bool is_typedarray;
+  NODE_API_CALL(env, napi_is_typedarray(env, input_array, &is_typedarray));
+
+  NODE_API_ASSERT(env, is_typedarray,
+      "Wrong type of arguments. Expects a typed array as first argument.");
+
+  napi_valuetype valuetype1;
+  napi_value input_buffer = args[1];
+  NODE_API_CALL(env, napi_typeof(env, input_buffer, &valuetype1));
+
+  NODE_API_ASSERT(env, valuetype1 == napi_object,
+      "Wrong type of arguments. Expects an array buffer as second argument.");
+
+  bool is_arraybuffer;
+  NODE_API_CALL(env, napi_is_arraybuffer(env, input_buffer, &is_arraybuffer));
+
+  NODE_API_ASSERT(env, is_arraybuffer,
+      "Wrong type of arguments. Expects an array buffer as second argument.");
+
+  napi_typedarray_type type;
+  napi_value in_array_buffer;
+  size_t byte_offset;
+  size_t length;
+  NODE_API_CALL(env, napi_get_typedarray_info(
+      env, input_array, &type, &length, NULL, &in_array_buffer, &byte_offset));
+
+  if (argc == 4) {
+    napi_valuetype valuetype2;
+    NODE_API_CALL(env, napi_typeof(env, args[2], &valuetype2));
+
+    NODE_API_ASSERT(env, valuetype2 == napi_number,
+        "Wrong type of arguments. Expects a number as third argument.");
+
+    uint32_t uint32_length;
+    NODE_API_CALL(env, napi_get_value_uint32(env, args[2], &uint32_length));
+    length = uint32_length;
+
+    napi_valuetype valuetype3;
+    NODE_API_CALL(env, napi_typeof(env, args[3], &valuetype3));
+
+    NODE_API_ASSERT(env, valuetype3 == napi_number,
+        "Wrong type of arguments. Expects a number as third argument.");
+
+    uint32_t uint32_byte_offset;
+    NODE_API_CALL(env, napi_get_value_uint32(env, args[3], &uint32_byte_offset));
+    byte_offset = uint32_byte_offset;
+  }
+
+  napi_value output_array;
+  NODE_API_CALL(env, napi_create_typedarray(
+      env, type, length, input_buffer, byte_offset, &output_array));
+
+  return output_array;
+}
+
+static napi_value Detach(napi_env env, napi_callback_info info) {
+  size_t argc = 1;
+  napi_value args[1];
+  NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
+  NODE_API_ASSERT(env, argc == 1, "Wrong number of arguments.");
+
+  bool is_typedarray;
+  NODE_API_CALL(env, napi_is_typedarray(env, args[0], &is_typedarray));
+  NODE_API_ASSERT(
+      env, is_typedarray,
+      "Wrong type of arguments. Expects a typedarray as first argument.");
+
+  napi_value arraybuffer;
+  NODE_API_CALL(env,
+      napi_get_typedarray_info(
+          env, args[0], NULL, NULL, NULL, &arraybuffer, NULL));
+  NODE_API_CALL(env, napi_detach_arraybuffer(env, arraybuffer));
+
+  return NULL;
+}
+
+static napi_value IsDetached(napi_env env, napi_callback_info info) {
+  size_t argc = 1;
+  napi_value args[1];
+  NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
+  NODE_API_ASSERT(env, argc == 1, "Wrong number of arguments.");
+
+  napi_value array_buffer = args[0];
+  bool is_arraybuffer;
+  NODE_API_CALL(env, napi_is_arraybuffer(env, array_buffer, &is_arraybuffer));
+  NODE_API_ASSERT(env, is_arraybuffer,
+      "Wrong type of arguments. Expects an array buffer as first argument.");
+
+  bool is_detached;
+  NODE_API_CALL(env,
+      napi_is_detached_arraybuffer(env, array_buffer, &is_detached));
+
+  napi_value result;
+  NODE_API_CALL(env, napi_get_boolean(env, is_detached, &result));
+
+  return result;
+}
+
+EXTERN_C_START
+napi_value Init(napi_env env, napi_value exports) {
+  napi_property_descriptor descriptors[] = {
+    DECLARE_NODE_API_PROPERTY("Multiply", Multiply),
+    DECLARE_NODE_API_PROPERTY("External", External),
+    DECLARE_NODE_API_PROPERTY("NullArrayBuffer", NullArrayBuffer),
+    DECLARE_NODE_API_PROPERTY("CreateTypedArray", CreateTypedArray),
+    DECLARE_NODE_API_PROPERTY("Detach", Detach),
+    DECLARE_NODE_API_PROPERTY("IsDetached", IsDetached),
+  };
+
+  NODE_API_CALL(env, napi_define_properties(
+      env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
+
+  return exports;
+}
+EXTERN_C_END