From 20f1849353ace58804e7c09ef916d26c4b167dd9 Mon Sep 17 00:00:00 2001
From: weipeng <wangweipeng@apache.org>
Date: Tue, 2 Jan 2024 15:57:30 +0800
Subject: [PATCH] [JavaScript] Implement the standard protocol (#1286)

1. Make the tag string lazy to avoid creating strings.
2. Add the serializeVolatile API to take ownership of the bufferWriter
and avoid buffer copying, which is 30% faster than the serialize
operation. There is a usage limitation; the bufferWriter remains
inaccessible until the dispose method from the result of
serializeVolatile has been called.
4. Remove the useLatin1 configuration, which is a standard in the Fury
protocol.

Before:

![image](https://github.com/apache/incubator-fury/assets/16490211/aa8cba42-aafd-4f5b-ab73-2ac698dc8726)

After:

![image](https://github.com/apache/incubator-fury/assets/16490211/106ea85c-be7d-4bfe-98b1-05d766b43035)
---
 javascript/benchmark/index.js                 |   2 +-
 javascript/benchmark/sample.jpg               | Bin 0 -> 27259 bytes
 javascript/packages/fury/index.ts             |   7 ++
 javascript/packages/fury/lib/classResolver.ts |  50 ++++++++++---
 javascript/packages/fury/lib/error.ts         |  28 ++++++++
 javascript/packages/fury/lib/fury.ts          |  24 ++++++-
 .../fury/lib/internalSerializer/number.ts     |   8 +--
 javascript/packages/fury/lib/reader.ts        |   9 ++-
 javascript/packages/fury/lib/type.ts          |   1 -
 javascript/packages/fury/lib/writer.ts        |  26 +++++--
 javascript/test/array.test.ts                 |   2 +-
 javascript/test/io.test.ts                    |  20 ++----
 javascript/test/protocol/struct.test.ts       |  52 --------------
 javascript/test/reader.test.ts                |   5 --
 javascript/test/string.test.ts                |   2 -
 javascript/test/writer.test.ts                |  66 ++++++++++++++++++
 16 files changed, 201 insertions(+), 101 deletions(-)
 create mode 100644 javascript/benchmark/sample.jpg
 create mode 100644 javascript/packages/fury/lib/error.ts
 create mode 100644 javascript/test/writer.test.ts

diff --git a/javascript/benchmark/index.js b/javascript/benchmark/index.js
index eb74e30536..5dd96f0fb1 100644
--- a/javascript/benchmark/index.js
+++ b/javascript/benchmark/index.js
@@ -20,7 +20,7 @@
 const Fury = require("@furyjs/fury");
 const utils = require("../test/util");
 const hps = require('@furyjs/hps');
-const fury = new Fury.default({ hps, refTracking: false, useLatin1: true, useSliceString: true });
+const fury = new Fury.default({ hps, refTracking: false, useSliceString: true });
 const Benchmark = require("benchmark");
 const protobuf = require("protobufjs");
 const path = require('path');
diff --git a/javascript/benchmark/sample.jpg b/javascript/benchmark/sample.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..5c98c2d23edf0a529fe9686434c344fe6fbae9dd
GIT binary patch
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z;K-AYs#eQht+>Sp{b2`$7JVmpk)QdIKXaehp$A4s21XYmKqwo?^G|ClKt?Y=9-;Zl
zVnSHt;j?KQ5U^8E=GIpg<@?r=!#t{nXd!gCynbLdhoq6xiDxnN5x{=0KAhP!!|{#^
zE~onhXNxj44_?u|Vt{ug$Np5kA<2Zz?QQ{U2(Ksu8?&RJc?D^=pt;&;wbo<7*D+rU
zI{Tl8lU7VoMA}f>-Jn#HmUPKX^#f*upXE-#i5KWWx5}%g5qR_rEM=>bR$$AjEx9dU
zy<39V-WFzSZ<<zbwOdNDoGCK!QjY@%sHyd>a;AAgp=k_G>}41FhQfURBYEeL547Y`
zaw0bIEl0ziW2I}oAHph2YTSat9nCWbe7d+odq=6u#S-t>l<M3a;-7c}h_&KKOT_Gg
zv&wBd;VJ8=oiBMsqoA;)%ulFXJ6&Ra+Cl$ghx3!?G{*M$7z<Gg-0?0}Mt<5J1H`BD
hqOYzo*x86uZl{?2L(vYBYJb)FYYe`v0Ydb^{|9`CKgIw6

literal 0
HcmV?d00001

diff --git a/javascript/packages/fury/index.ts b/javascript/packages/fury/index.ts
index fd5d1fa4b5..b305c4574e 100644
--- a/javascript/packages/fury/index.ts
+++ b/javascript/packages/fury/index.ts
@@ -57,12 +57,19 @@ export default class {
       serialize: (data: ToRecordType<T>) => {
         return this.fury.serialize(data, serializer);
       },
+      serializeVolatile: (data: ToRecordType<T>) => {
+        return this.fury.serializeVolatile(data, serializer);
+      },
       deserialize: (bytes: Uint8Array) => {
         return this.fury.deserialize(bytes, serializer) as ToRecordType<T>;
       },
     };
   }
 
+  serializeVolatile(v: any, serialize?: Serializer) {
+    return this.fury.serializeVolatile(v, serialize);
+  }
+
   serialize(v: any, serialize?: Serializer) {
     return this.fury.serialize(v, serialize);
   }
diff --git a/javascript/packages/fury/lib/classResolver.ts b/javascript/packages/fury/lib/classResolver.ts
index e2553ad81c..d344e511b4 100644
--- a/javascript/packages/fury/lib/classResolver.ts
+++ b/javascript/packages/fury/lib/classResolver.ts
@@ -34,12 +34,39 @@ import { BinaryWriter } from "./writer";
 const USESTRINGVALUE = 0;
 const USESTRINGID = 1;
 
+class Lazystring {
+  private string: string | null = null;
+  private start: number | null = null;
+  private len: number | null = null;
+
+  static fromPair(start: number, len: number) {
+    const result = new Lazystring();
+    result.start = start;
+    result.len = len;
+    return result;
+  }
+
+  static fromString(str: string) {
+    const result = new Lazystring();
+    result.string = str;
+    return result;
+  }
+
+  toString(binaryReader: BinaryReader) {
+    if (this.string == null) {
+      const str = binaryReader.stringUtf8At(this.start!, this.len!);
+      return str;
+    }
+    return this.string;
+  }
+}
+
 export default class SerializerResolver {
   private internalSerializer: Serializer[] = new Array(300);
   private customSerializer: { [key: string]: Serializer } = {
   };
 
-  private readStringPool: string[] = [];
+  private readStringPool: Lazystring[] = [];
   private writeStringCount = 0;
   private writeStringIndex: number[] = [];
 
@@ -139,10 +166,9 @@ export default class SerializerResolver {
     const flag = binaryReader.uint8();
     if (flag === USESTRINGVALUE) {
       binaryReader.skip(8); // The tag hash is not needed at the moment.
-      const str = binaryReader.stringUtf8(binaryReader.int16());
-      return str;
+      return binaryReader.stringUtf8(binaryReader.int16());
     } else {
-      return this.readStringPool[binaryReader.int16()];
+      return this.readStringPool[binaryReader.int16()].toString(binaryReader);
     }
   }
 
@@ -150,11 +176,19 @@ export default class SerializerResolver {
     const flag = binaryReader.uint8();
     if (flag === USESTRINGVALUE) {
       binaryReader.skip(8); // The tag hash is not needed at the moment.
-      const str = binaryReader.stringUtf8(binaryReader.int16());
-      this.readStringPool.push(str);
-      return str;
+      const start = binaryReader.getCursor();
+      const len = binaryReader.int16();
+      binaryReader.skip(len);
+      this.readStringPool.push(Lazystring.fromPair(start, len));
+      const idx = this.readStringPool.length;
+      return () => {
+        return this.readStringPool[idx - 1].toString(binaryReader);
+      };
     } else {
-      return this.readStringPool[binaryReader.int16()];
+      const idx = binaryReader.int16();
+      return () => {
+        return this.readStringPool[idx].toString(binaryReader);
+      };
     }
   }
 }
diff --git a/javascript/packages/fury/lib/error.ts b/javascript/packages/fury/lib/error.ts
new file mode 100644
index 0000000000..2c8d3ed914
--- /dev/null
+++ b/javascript/packages/fury/lib/error.ts
@@ -0,0 +1,28 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+export class OwnershipError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = this.constructor.name;
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, this.constructor);
+    }
+  }
+}
diff --git a/javascript/packages/fury/lib/fury.ts b/javascript/packages/fury/lib/fury.ts
index fc77993944..5c4c3cef4b 100644
--- a/javascript/packages/fury/lib/fury.ts
+++ b/javascript/packages/fury/lib/fury.ts
@@ -22,6 +22,7 @@ import { BinaryWriter } from "./writer";
 import { BinaryReader } from "./reader";
 import { ReferenceResolver } from "./referenceResolver";
 import { ConfigFlags, Serializer, Config, InternalSerializerType, Language } from "./type";
+import { OwnershipError } from "./error";
 
 export default (config: Config) => {
   const binaryReader = BinaryReader(config);
@@ -38,6 +39,7 @@ export default (config: Config) => {
     classResolver,
     binaryReader,
     binaryWriter,
+    serializeVolatile,
   };
   classResolver.init(fury);
 
@@ -71,10 +73,17 @@ export default (config: Config) => {
     }
   }
 
-  function serialize<T = any>(data: T, serializer?: Serializer) {
+  function serializeInternal<T = any>(data: T, serializer?: Serializer) {
+    try {
+      binaryWriter.reset();
+    } catch (e) {
+      if (e instanceof OwnershipError) {
+        throw new Error("Permission denied. To release the serialization ownership, you must call the dispose function returned by serializeVolatile.");
+      }
+      throw e;
+    }
     referenceResolver.reset();
     classResolver.reset();
-    binaryWriter.reset();
     let bitmap = 0;
     if (data === null) {
       bitmap |= ConfigFlags.isNullFlag;
@@ -92,7 +101,16 @@ export default (config: Config) => {
       classResolver.getSerializerById(InternalSerializerType.ANY).write(data);
     }
     binaryWriter.setUint32Position(cursor, binaryWriter.getCursor()); // nativeObjects start offsets;
-    return binaryWriter.dump();
+    return binaryWriter;
+  }
+
+  function serialize<T = any>(data: T, serializer?: Serializer) {
+    return serializeInternal(data, serializer).dump();
+  }
+
+  function serializeVolatile<T = any>(data: T, serializer?: Serializer) {
+    return serializeInternal(data, serializer).dumpAndOwn();
   }
+
   return fury;
 };
diff --git a/javascript/packages/fury/lib/internalSerializer/number.ts b/javascript/packages/fury/lib/internalSerializer/number.ts
index 7d0789fd09..87cd6b148e 100644
--- a/javascript/packages/fury/lib/internalSerializer/number.ts
+++ b/javascript/packages/fury/lib/internalSerializer/number.ts
@@ -21,7 +21,7 @@ import { InternalSerializerType, RefFlags, Fury } from "../type";
 
 export const uInt8Serializer = (fury: Fury) => {
   const { binaryWriter, binaryReader, referenceResolver } = fury;
-  const { int8: writeInt8, uint8: writeUInt8 } = binaryWriter;
+  const { uint8: writeUInt8 } = binaryWriter;
   const { uint8: readUInt8 } = binaryReader;
   return {
     ...referenceResolver.deref(() => {
@@ -107,7 +107,7 @@ export const int8Serializer = (fury: Fury) => {
 
 export const uInt16Serializer = (fury: Fury) => {
   const { binaryWriter, binaryReader, referenceResolver } = fury;
-  const { int8: writeInt8, uint16: writeUInt16 } = binaryWriter;
+  const { uint16: writeUInt16 } = binaryWriter;
   const { uint16: readUInt16 } = binaryReader;
 
   return {
@@ -151,7 +151,7 @@ export const int16Serializer = (fury: Fury) => {
 
 export const uInt32Serializer = (fury: Fury) => {
   const { binaryWriter, binaryReader, referenceResolver } = fury;
-  const { int8: writeInt8, uint32: writeUInt32 } = binaryWriter;
+  const { uint32: writeUInt32 } = binaryWriter;
   const { uint32: readUInt32 } = binaryReader;
 
   return {
@@ -195,7 +195,7 @@ export const int32Serializer = (fury: Fury) => {
 
 export const uInt64Serializer = (fury: Fury) => {
   const { binaryWriter, binaryReader, referenceResolver } = fury;
-  const { int8: writeInt8, uint64: writeUInt64 } = binaryWriter;
+  const { uint64: writeUInt64 } = binaryWriter;
   const { uint64: readUInt64 } = binaryReader;
 
   return {
diff --git a/javascript/packages/fury/lib/reader.ts b/javascript/packages/fury/lib/reader.ts
index 80e479d909..6b275f1d32 100644
--- a/javascript/packages/fury/lib/reader.ts
+++ b/javascript/packages/fury/lib/reader.ts
@@ -99,6 +99,10 @@ export const BinaryReader = (config: Config) => {
     return result;
   }
 
+  function stringUtf8At(start: number, len: number) {
+    return buffer.utf8Slice(start, start + len);
+  }
+
   function stringUtf8(len: number) {
     const result = buffer.utf8Slice(cursor, cursor + len);
     cursor += len;
@@ -106,9 +110,9 @@ export const BinaryReader = (config: Config) => {
   }
 
   function stringOfVarInt32() {
-    const useLatin1 = config.useLatin1 ? uint8() === LATIN1 : false;
+    const isLatin1 = uint8() === LATIN1;
     const len = varInt32();
-    return useLatin1 ? stringLatin1(len) : stringUtf8(len);
+    return isLatin1 ? stringLatin1(len) : stringUtf8(len);
   }
 
   function stringLatin1Fast(len: number) {
@@ -167,6 +171,7 @@ export const BinaryReader = (config: Config) => {
     bufferRef,
     uint8,
     reset,
+    stringUtf8At,
     stringUtf8,
     stringLatin1,
     stringOfVarInt32,
diff --git a/javascript/packages/fury/lib/type.ts b/javascript/packages/fury/lib/type.ts
index 2d6606b297..39cd50669f 100644
--- a/javascript/packages/fury/lib/type.ts
+++ b/javascript/packages/fury/lib/type.ts
@@ -109,7 +109,6 @@ export interface Hps {
 export interface Config {
   hps?: Hps
   refTracking?: boolean
-  useLatin1?: boolean
   useSliceString?: boolean
 }
 
diff --git a/javascript/packages/fury/lib/writer.ts b/javascript/packages/fury/lib/writer.ts
index 01f11f644b..57ea680f86 100644
--- a/javascript/packages/fury/lib/writer.ts
+++ b/javascript/packages/fury/lib/writer.ts
@@ -19,6 +19,7 @@
 
 import { Config, LATIN1, UTF8 } from "./type";
 import { PlatformBuffer, alloc, strByteLength } from "./platformBuffer";
+import { OwnershipError } from "./error";
 
 const MAX_POOL_SIZE = 1024 * 1024 * 3; // 3MB
 
@@ -28,6 +29,7 @@ export const BinaryWriter = (config: Config) => {
   let arrayBuffer: PlatformBuffer;
   let dataView: DataView;
   let reserved = 0;
+  let locked = false;
 
   function initPoll() {
     byteLength = 1024 * 100;
@@ -49,6 +51,9 @@ export const BinaryWriter = (config: Config) => {
   }
 
   function reset() {
+    if (locked) {
+      throw new OwnershipError("Ownership of writer was held by dumpAndOwn, but not released");
+    }
     cursor = 0;
     reserved = 0;
   }
@@ -170,9 +175,7 @@ export const BinaryWriter = (config: Config) => {
     return function (v: string) {
       const isLatin1 = detectIsLatin1(v);
       const len = isLatin1 ? v.length : strByteLength(v);
-      if (config.useLatin1) {
-        dataView.setUint8(cursor++, isLatin1 ? LATIN1 : UTF8);
-      }
+      dataView.setUint8(cursor++, isLatin1 ? LATIN1 : UTF8);
       varInt32(len);
       reserve(len);
       if (isLatin1) {
@@ -191,9 +194,7 @@ export const BinaryWriter = (config: Config) => {
   function stringOfVarInt32Slow(v: string) {
     const len = strByteLength(v);
     const isLatin1 = len === v.length;
-    if (config.useLatin1) {
-      dataView.setUint8(cursor++, isLatin1 ? LATIN1 : UTF8);
-    }
+    dataView.setUint8(cursor++, isLatin1 ? LATIN1 : UTF8);
     varInt32(len);
     reserve(len);
     if (isLatin1) {
@@ -236,6 +237,18 @@ export const BinaryWriter = (config: Config) => {
     return result;
   }
 
+  function dumpAndOwn() {
+    locked = true;
+    return {
+      get() {
+        return arrayBuffer.subarray(0, cursor);
+      },
+      dispose() {
+        locked = false;
+      },
+    };
+  }
+
   function getCursor() {
     return cursor;
   }
@@ -278,5 +291,6 @@ export const BinaryWriter = (config: Config) => {
     int32,
     getCursor,
     setUint32Position,
+    dumpAndOwn,
   };
 };
diff --git a/javascript/test/array.test.ts b/javascript/test/array.test.ts
index 98c36af159..ea9c7d2217 100644
--- a/javascript/test/array.test.ts
+++ b/javascript/test/array.test.ts
@@ -122,7 +122,7 @@ describe('array', () => {
       }
     };
     
-    const fury = new Fury({ refTracking: true, useLatin1: true }); 
+    const fury = new Fury({ refTracking: true }); 
     const serializer = fury.registerSerializer(description).serializer;
     const input = fury.serialize({
       a7: ["hello", "world", null]
diff --git a/javascript/test/io.test.ts b/javascript/test/io.test.ts
index 03487315f2..040c9c7e2c 100644
--- a/javascript/test/io.test.ts
+++ b/javascript/test/io.test.ts
@@ -30,11 +30,7 @@ function num2Bin(num: number) {
 
 [
     {
-        useLatin1: true,
         useSliceString: true,
-    },
-    {
-        useLatin1: false,
     }
 ].forEach((config: Config) => {
     describe('writer', () => {
@@ -186,9 +182,7 @@ function num2Bin(num: number) {
             const ab = writer.dump();
             const reader = BinaryReader(config);
             reader.reset(ab);
-            if (config.useLatin1) {
-                expect(reader.uint8()).toBe(0);
-            }
+            expect(reader.uint8()).toBe(0);
             const len = reader.varInt32();
             expect(len).toBe(11);
             const str = reader.stringLatin1(11);
@@ -202,9 +196,7 @@ function num2Bin(num: number) {
             const ab = writer.dump();
             const reader = BinaryReader(config);
             reader.reset(ab);
-            if (config.useLatin1) {
-                expect(reader.uint8()).toBe(0);
-            }
+            expect(reader.uint8()).toBe(0);
             const len = reader.varInt32();
             expect(len).toBe(110);
             expect(reader.stringLatin1(len)).toBe(str);
@@ -219,9 +211,7 @@ function num2Bin(num: number) {
 
             {
                 reader.reset(ab);
-                if (config.useLatin1) {
-                    expect(reader.uint8()).toBe(1);
-                }
+                expect(reader.uint8()).toBe(1);
                 const len = reader.varInt32();
                 expect(len).toBe(17);
                 expect(reader.stringUtf8(len)).toBe(str);
@@ -240,9 +230,7 @@ function num2Bin(num: number) {
             const reader = BinaryReader(config);
             {
                 reader.reset(ab);
-                if (config.useLatin1) {
-                    expect(reader.uint8()).toBe(1);
-                }
+                expect(reader.uint8()).toBe(1);
                 const len = reader.varInt32();
                 expect(len).toBe(170);
                 expect(reader.stringUtf8(len)).toBe(str);
diff --git a/javascript/test/protocol/struct.test.ts b/javascript/test/protocol/struct.test.ts
index 4e5416330b..0dd3141919 100644
--- a/javascript/test/protocol/struct.test.ts
+++ b/javascript/test/protocol/struct.test.ts
@@ -43,58 +43,6 @@ describe('protocol', () => {
         const result = deserialize(bf);
         expect(result).toEqual(obj);
     });
-    test('should py bin work', () => {
-        
-        const fury = new Fury({ refTracking: true });
-        const { deserialize } = fury.registerSerializer({
-            type: InternalSerializerType.FURY_TYPE_TAG,
-            options: {
-                tag: "example.ComplexObject",
-                props: {
-                    f1: Type.string(),
-                    f2: Type.map(Type.string(), Type.any()),
-                    f3: Type.int8(),
-                    f4: Type.int16(),
-                    f5: Type.int32(),
-                    f6: Type.int64(),
-                    f7: Type.float(),
-                    f8: Type.double(),
-                    f9: Type.array(Type.int16()),
-                    f10: Type.map(Type.int32(), Type.double()),
-                }
-            }
-        });
-
-        const obj = deserialize(new Uint8Array([
-            134, 2, 179, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 81, 159, 160, 124, 69, 240, 2, 120, 21, 0,
-            101, 120, 97, 109, 112, 108, 101, 46, 67, 111, 109, 112, 108, 101, 120, 79, 98, 106, 101,
-            99, 116, 71, 168, 32, 21, 0, 13, 0, 3, 115, 116, 114, 0, 30, 0, 2, 255, 7, 0, 1, 0, 0, 0,
-            255, 12, 0, 85, 85, 85, 85, 85, 85, 213, 63, 255, 7, 0, 100, 0, 0, 0, 255, 12, 0, 146, 36,
-            73, 146, 36, 73, 210, 63, 0, 30, 0, 2, 0, 13, 0, 2, 107, 49, 255, 3, 0, 255, 0, 13, 0, 2,
-            107, 50, 255, 3, 0, 2, 255, 3, 0, 127, 255, 5, 0, 255, 127, 255, 7, 0, 255, 255, 255, 127,
-            255, 9, 0, 255, 255, 255, 255, 255, 255, 255, 127, 255, 11, 0, 0, 0, 0, 63, 255, 12, 0, 85,
-            85, 85, 85, 85, 85, 229, 63, 0, 25, 0, 2, 255, 5, 0, 1, 0, 255, 5, 0, 2, 0, 134, 2, 98, 0,
-            0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 81, 159, 160, 124, 69, 240, 2, 120, 21, 0, 101, 120, 97, 109,
-            112, 108, 101, 46, 67, 111, 109, 112, 108, 101, 120, 79, 98, 106, 101, 99, 116, 71, 168,
-            32, 21, 253, 253, 253, 255, 3, 0, 0, 255, 5, 0, 0, 0, 255, 7, 0, 0, 0, 0, 0, 255, 9, 0, 0,
-            0, 0, 0, 0, 0, 0, 0, 255, 11, 0, 171, 170, 170, 62, 255, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-            253,
-        ]));
-        obj.f6 = Number(obj.f6)
-
-        expect(obj).toEqual({
-            f1: "str",
-            f10: new Map([[1, 1 / 3], [100, 2 / 7]]),
-            f2: new Map([['k1', -1], ['k2', 2]]),
-            f3: 2**7 - 1,
-            f4: 2**15 - 1,
-            f5: 2**31 - 1,
-            f6: 2**63 - 1,
-            f7: 1 / 2,
-            f8: 2 / 3,
-            f9: [1, 2]
-        })
-    });
 });
 
 
diff --git a/javascript/test/reader.test.ts b/javascript/test/reader.test.ts
index c627d04529..0e0e6dc699 100644
--- a/javascript/test/reader.test.ts
+++ b/javascript/test/reader.test.ts
@@ -28,11 +28,6 @@ const hps = process.env.enableHps ? require('@furyjs/hps') : null;
 
 [
     {
-        useLatin1: true,
-        hps,
-    },
-    {
-        useLatin1: false,
         hps,
     }
 ].forEach((config: Config) => {
diff --git a/javascript/test/string.test.ts b/javascript/test/string.test.ts
index 4aefb8f8bc..a736f7925c 100644
--- a/javascript/test/string.test.ts
+++ b/javascript/test/string.test.ts
@@ -23,11 +23,9 @@ const hps = require('@furyjs/hps');
 [
   {
     hps,
-    useLatin1: true
   },
   {
     hps: null,
-    useLatin1: false
   }
 ].forEach(config => {
   describe('string', () => {
diff --git a/javascript/test/writer.test.ts b/javascript/test/writer.test.ts
new file mode 100644
index 0000000000..caf9e599ff
--- /dev/null
+++ b/javascript/test/writer.test.ts
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { OwnershipError } from '@furyjs/fury/lib/error';
+import { BinaryWriter } from '@furyjs/fury/lib/writer';
+import { describe, expect, test } from '@jest/globals';
+
+describe('writer', () => {
+    test('should dumpOwn dispose work', () => {
+        const writer = BinaryWriter({});
+        {
+            writer.uint8(256);
+            const { get, dispose } = writer.dumpAndOwn();
+            const ab = get();
+            expect(ab.byteLength).toBe(1);
+            expect(ab[0]).toBe(0);
+            expect(writer.getCursor()).toBe(1);
+            dispose();
+        }
+        writer.reset();
+        {
+            writer.uint8(256);
+            const { get, dispose } = writer.dumpAndOwn();
+            const ab = get();
+            expect(ab.byteLength).toBe(1);
+            expect(ab[0]).toBe(0);
+            expect(writer.getCursor()).toBe(1);
+            dispose();
+        }
+    });
+
+    test('should dumpOwn work', () => {
+        const writer = BinaryWriter({});
+        {
+            writer.uint8(256);
+            const { get } = writer.dumpAndOwn();
+            const ab = get();
+            expect(ab.byteLength).toBe(1);
+            expect(ab[0]).toBe(0);
+            expect(writer.getCursor()).toBe(1);
+        }
+        try {
+            writer.reset();
+        } catch (error) {
+            expect(error instanceof OwnershipError).toBe(true);
+            return;
+        }
+        throw new Error("unreachable code")
+    });
+});
\ No newline at end of file