feat: added support typescript

.github/workflows/tests.yml

@@ -0,0 +1,97 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go-version: ['1.21', '1.22', '1.23']
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Cache Go modules
+      uses: actions/cache@v4
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-
+
+    - name: Download dependencies
+      run: go mod download
+
+    - name: Run unit tests
+      run: go test -v ./parser/... ./generator/...
+
+    - name: Run benchmarks (short)
+      run: go test -bench=. -benchtime=100ms -run=^$ ./benchmarks/...
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.23'
+
+    - name: golangci-lint
+      uses: golangci/golangci-lint-action@v6
+      with:
+        version: latest
+        args: --timeout=5m
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.23'
+
+    - name: Build arpack CLI
+      run: go build -v ./cmd/arpack
+
+    - name: Test code generation
+      run: |
+        go run ./cmd/arpack -in testdata/sample.go -out-go /tmp/gen-go -out-ts /tmp/gen-ts
+        test -f /tmp/gen-go/Sample_gen.go
+        test -f /tmp/gen-ts/Sample.gen.ts
+
+  e2e:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.23'
+
+    - name: Set up .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: '9.0.x'
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+
+    - name: Run E2E tests
+      run: go test -v ./e2e/...

.golangci.yml

@@ -20,4 +20,4 @@ formatters:
 linters-settings:
   goimports:
     local-prefixes:
-      - gorena/server
+      - github.com/edmand46/arpack

README.md

@@ -4,16 +4,19 @@
 
 # ArPack
 
-Binary serialization code generator for Go and C#. Define messages once as Go structs — get zero-allocation `Marshal`/`Unmarshal` for Go and `unsafe` pointer-based `Serialize`/`Deserialize` for C#.
+[![Tests](https://github.com/edmand46/arpack/actions/workflows/tests.yml/badge.svg)](https://github.com/edmand46/arpack/actions/workflows/tests.yml)
+
+Binary serialization code generator for Go, C#, and TypeScript. Define messages once as Go structs — get zero-allocation `Marshal`/`Unmarshal` for Go, `unsafe` pointer-based `Serialize`/`Deserialize` for C#, and `DataView`-based serialization for TypeScript/browser.
 
 ## Features
 
-- **Single source of truth** — define messages in Go, generate both Go and C# code
+- **Single source of truth** — define messages in Go, generate code for Go, C#, and TypeScript
 - **Float quantization** — compress `float32`/`float64` to 8 or 16 bits with a `pack` struct tag
 - **Boolean packing** — consecutive `bool` fields are packed into single bytes (up to 8 per byte)
-- **Enums** — `type Opcode uint16` + `const` block becomes a C# `enum`
+- **Enums** — `type Opcode uint16` + `const` block becomes C#/TypeScript enums
 - **Nested types, fixed arrays, slices** — full support for complex message structures
-- **Cross-language binary compatibility** — Go and C# produce identical wire formats
+- **Cross-language binary compatibility** — Go, C#, and TypeScript produce identical wire formats
+- **Browser support** — TypeScript target uses native DataView API for zero-dependency serialization
 
 ## When to use
 
@@ -24,6 +27,7 @@ Typical setups:
 - **[Nakama](https://heroiclabs.com/nakama/) + Unity** — define all network messages in Go, generate C# structs for Unity. Both sides share the exact same wire format with no reflection or boxing.
 - **Custom Go game server + Unity** — roll your own server without pulling in a serialization framework. ArPack generates plain `Marshal`/`Unmarshal` methods with zero allocations on the hot path.
 - **Any Go service + .NET client** — works anywhere you control both ends and want a compact binary protocol without Protobuf's runtime overhead or code-gen complexity.
+- **Go backend + Browser/WebSocket** — generate TypeScript classes for browser-based clients. Uses native DataView API with zero dependencies.
 
 ArPack is a poor fit if you need schema evolution (adding/removing fields without redeploying both sides) — use Protobuf or FlatBuffers instead.
 
@@ -36,7 +40,11 @@ go install github.com/edmand46/arpack/cmd/arpack@latest
 ## Usage
 
 ```bash
-arpack -in messages.go -out-go ./gen -out-cs ../Unity/Assets/Scripts
+# Generate Go + C# + TypeScript
+arpack -in messages.go -out-go ./gen -out-cs ../Unity/Assets/Scripts -out-ts ./web/src/messages
+
+# Generate only TypeScript
+arpack -in messages.go -out-ts ./web/src/messages
 ```
 
 | Flag | Description |
@@ -44,11 +52,13 @@ arpack -in messages.go -out-go ./gen -out-cs ../Unity/Assets/Scripts
 | `-in` | Input Go file with struct definitions (required) |
 | `-out-go` | Output directory for generated Go code |
 | `-out-cs` | Output directory for generated C# code |
+| `-out-ts` | Output directory for generated TypeScript code |
 | `-cs-namespace` | C# namespace (default: `Arpack.Messages`) |
 
 **Output files:**
 - Go: `{name}_gen.go`
 - C#: `{Name}.gen.cs`
+- TypeScript: `{Name}.gen.ts`
 
 ## Schema Definition
 
@@ -135,6 +145,28 @@ public static unsafe int Deserialize(byte* buffer, out MoveMessage msg)
 
 Uses unsafe pointers for zero-copy serialization. Returns bytes written/consumed.
 
+### TypeScript
+
+```typescript
+export class MoveMessage {
+  position: Vector3 = new Vector3();
+  velocity: number[] = new Array<number>(3).fill(0);
+  waypoints: Vector3[] = [];
+  playerId: number = 0;
+  active: boolean = false;
+  visible: boolean = false;
+  ghost: boolean = false;
+  name: string = "";
+
+  serialize(view: DataView, offset: number): number
+  static deserialize(view: DataView, offset: number): [MoveMessage, number]
+}
+```
+
+Uses native DataView API for browser-compatible serialization with zero dependencies. Returns bytes written/consumed.
+
+**Note:** TypeScript field names are converted to camelCase (e.g., `PlayerID` → `playerId`).
+
 ## Wire Format
 
 - Little-endian byte order

cmd/arpack/main.go

@@ -1,28 +1,31 @@
 package main
 
 import (
-	"github.com/edmand46/arpack/generator"
-	"github.com/edmand46/arpack/parser"
 	"flag"
 	"fmt"
 	"log"
 	"os"
 	"path/filepath"
 	"strings"
+
+	"github.com/edmand46/arpack/generator"
+	"github.com/edmand46/arpack/parser"
 )
 
 func main() {
 	in := flag.String("in", "", "input Go file with struct definitions")
 	outGo := flag.String("out-go", "", "output directory for generated Go code")
 	outCS := flag.String("out-cs", "", "output directory for generated C# code")
+	outTS := flag.String("out-ts", "", "output directory for generated TypeScript code")
 	namespace := flag.String("cs-namespace", "Arpack.Messages", "C# namespace")
 	flag.Parse()
 
 	if *in == "" {
 		log.Fatal("arpack: -in is required")
 	}
-	if *outGo == "" && *outCS == "" {
-		log.Fatal("arpack: at least one of -out-go or -out-cs is required")
+
+	if *outGo == "" && *outCS == "" && *outTS == "" {
+		log.Fatal("arpack: at least one of -out-go, -out-cs, or -out-ts is required")
 	}
 
 	schema, err := parser.ParseSchemaFile(*in)
@@ -74,6 +77,23 @@ func main() {
 
 		fmt.Printf("arpack: wrote %s\n", outPath)
 	}
+
+	if *outTS != "" {
+		src, err := generator.GenerateTypeScriptSchema(schema, "Arpack.Messages")
+		if err != nil {
+			log.Fatalf("arpack: TypeScript generation error: %v", err)
+		}
+
+		outPath := filepath.Join(*outTS, toTitle(baseName)+".gen.ts")
+		if err := os.MkdirAll(*outTS, 0755); err != nil {
+			log.Fatalf("arpack: mkdir %s: %v", *outTS, err)
+		}
+		if err := os.WriteFile(outPath, src, 0644); err != nil {
+			log.Fatalf("arpack: write %s: %v", outPath, err)
+		}
+
+		fmt.Printf("arpack: wrote %s\n", outPath)
+	}
 }
 
 func toTitle(s string) string {

e2e/e2e_test.go

@@ -2,9 +2,9 @@ package e2e
 
 import (
 	"bytes"
+	"fmt"
 	"github.com/edmand46/arpack/generator"
 	"github.com/edmand46/arpack/parser"
-	"fmt"
 	"math"
 	"os"
 	"os/exec"
@@ -16,12 +16,8 @@ import (
 
 const samplePath = "../testdata/sample.go"
 
-// TestE2E_CrossLanguage гоняет сериализацию в обе стороны: Go → C# и C# → Go.
+// TestE2E_CrossLanguage гоняет сериализацию в обе стороны: Go → C# / C# → Go / Go → TS / TS → Go.
 func TestE2E_CrossLanguage(t *testing.T) {
-	if _, err := exec.LookPath("dotnet"); err != nil {
-		t.Skip("dotnet not found, skipping cross-language e2e test")
-	}
-
 	schema, err := parser.ParseSchemaFile(samplePath)
 	if err != nil {
 		t.Fatalf("parse: %v", err)
@@ -32,13 +28,7 @@ func TestE2E_CrossLanguage(t *testing.T) {
 		t.Fatalf("GenerateGoSchema: %v", err)
 	}
 
-	csSrc, err := generator.GenerateCSharpSchema(schema, "Ragono.Messages")
-	if err != nil {
-		t.Fatalf("GenerateCSharpSchema: %v", err)
-	}
-
 	goDir := buildGoHarness(t, goSrc)
-	csDir := buildCSHarness(t, csSrc)
 
 	cases := []struct {
 		name    string
@@ -51,6 +41,14 @@ func TestE2E_CrossLanguage(t *testing.T) {
 		{"EnvelopeMessage", "EnvelopeMessage", 0},
 	}
 
+	// C# tests (if dotnet is available)
+	if _, err := exec.LookPath("dotnet"); err == nil {
+		csSrc, err := generator.GenerateCSharpSchema(schema, "Ragono.Messages")
+		if err != nil {
+			t.Fatalf("GenerateCSharpSchema: %v", err)
+		}
+		csDir := buildCSHarness(t, csSrc)
+
 		for _, tc := range cases {
 			t.Run("Go_to_CS/"+tc.name, func(t *testing.T) {
 				hex := runHarness(t, goDir, "go", "ser", tc.typ, "")
@@ -63,6 +61,33 @@ func TestE2E_CrossLanguage(t *testing.T) {
 				checkOutput(t, tc.typ, out, tc.epsilon)
 			})
 		}
+	} else {
+		t.Log("dotnet not found, skipping C# cross-language e2e tests")
+	}
+
+	// TypeScript tests (if node and tsx are available)
+	if _, err := exec.LookPath("node"); err == nil {
+		tsSrc, err := generator.GenerateTypeScriptSchema(schema, "Arpack.Messages")
+		if err != nil {
+			t.Fatalf("GenerateTypeScriptSchema: %v", err)
+		}
+		tsDir := buildTSHarness(t, tsSrc)
+
+		for _, tc := range cases {
+			t.Run("Go_to_TS/"+tc.name, func(t *testing.T) {
+				hex := runHarness(t, goDir, "go", "ser", tc.typ, "")
+				out := runHarness(t, tsDir, "ts", "deser", tc.typ, hex)
+				checkOutput(t, tc.typ, out, tc.epsilon)
+			})
+			t.Run("TS_to_Go/"+tc.name, func(t *testing.T) {
+				hex := runHarness(t, tsDir, "ts", "ser", tc.typ, "")
+				out := runHarness(t, goDir, "go", "deser", tc.typ, hex)
+				checkOutput(t, tc.typ, out, tc.epsilon)
+			})
+		}
+	} else {
+		t.Log("node not found, skipping TypeScript cross-language e2e tests")
+	}
 }
 
 // --- Build helpers ---
@@ -100,23 +125,59 @@ func buildCSHarness(t *testing.T, generatedSrc []byte) string {
 	return dir
 }
 
+func buildTSHarness(t *testing.T, generatedSrc []byte) string {
+	t.Helper()
+	dir := t.TempDir()
+
+	// Create src directory
+	srcDir := filepath.Join(dir, "src")
+	if err := os.MkdirAll(srcDir, 0755); err != nil {
+		t.Fatalf("mkdir %s: %v", srcDir, err)
+	}
+
+	// Write generated messages
+	write(t, filepath.Join(srcDir, "messages.gen.ts"), generatedSrc)
+
+	// Write harness
+	write(t, filepath.Join(srcDir, "harness.ts"), []byte(tsHarnessSource))
+
+	// Write package.json
+	write(t, filepath.Join(dir, "package.json"), []byte(tsPackageSource))
+
+	// Write tsconfig.json
+	write(t, filepath.Join(dir, "tsconfig.json"), []byte(tsConfigSource))
+
+	// Install dependencies and build
+	mustRun(t, dir, "npm", "install")
+	mustRun(t, dir, "npx", "tsc")
+
+	return dir
+}
+
 // --- Harness runners ---
 
 func runHarness(t *testing.T, dir, lang, op, typ, hexInput string) string {
 	t.Helper()
 	var cmd *exec.Cmd
-	if lang == "go" {
+	switch lang {
+	case "go":
 		args := []string{op, typ}
 		if hexInput != "" {
 			args = append(args, hexInput)
 		}
 		cmd = exec.Command(filepath.Join(dir, "harness"), args...)
-	} else {
+	case "cs":
 		args := []string{op, typ}
 		if hexInput != "" {
 			args = append(args, hexInput)
 		}
 		cmd = exec.Command("dotnet", append([]string{filepath.Join(dir, "out", "E2EHarness.dll")}, args...)...)
+	case "ts":
+		args := []string{op, typ}
+		if hexInput != "" {
+			args = append(args, hexInput)
+		}
+		cmd = exec.Command("node", append([]string{filepath.Join(dir, "dist", "harness.js")}, args...)...)
 	}
 	cmd.Dir = dir
 	out, err := cmd.CombinedOutput()
@@ -519,3 +580,191 @@ var csProjSource = fmt.Sprintf(`<Project Sdk="Microsoft.NET.Sdk">
   </PropertyGroup>
 </Project>
 `)
+
+// --- TypeScript harness source ---
+
+const tsPackageSource = `{
+  "name": "arpack-e2e-harness",
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "build": "tsc"
+  },
+  "devDependencies": {
+    "typescript": "^5.3.0",
+    "@types/node": "^20.0.0"
+  }
+}
+`
+
+const tsConfigSource = `{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "lib": ["ES2022", "DOM"],
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "outDir": "./dist",
+    "rootDir": "./src"
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}
+`
+
+const tsHarnessSource = `import { readFileSync } from 'fs';
+import { argv } from 'process';
+
+// Import generated messages
+import { Vector3, MoveMessage, SpawnMessage, EnvelopeMessage, Opcode } from './messages.gen.js';
+
+// Hex encoding/decoding utilities
+function encodeHex(data: Uint8Array): string {
+  return Array.from(data)
+    .map(b => b.toString(16).padStart(2, '0'))
+    .join('');
+}
+
+function decodeHex(hex: string): Uint8Array {
+  const bytes = new Uint8Array(hex.length / 2);
+  for (let i = 0; i < hex.length; i += 2) {
+    bytes[i / 2] = parseInt(hex.substr(i, 2), 16);
+  }
+  return bytes;
+}
+
+// Main harness
+function main() {
+  const args = argv.slice(2);
+  const op = args[0]; // 'ser' or 'deser'
+  const typ = args[1]; // message type
+  const hexInput = args[2]; // for deser
+
+  switch (` + "`${op}:${typ}`" + `) {
+    case 'ser:Vector3': {
+      const msg = new Vector3();
+      msg.x = 123.45;
+      msg.y = -200.0;
+      msg.z = 0.0;
+      const buf = new ArrayBuffer(64);
+      const view = new DataView(buf);
+      const n = msg.serialize(view, 0);
+      const bytes = new Uint8Array(buf, 0, n);
+      console.log(encodeHex(bytes));
+      break;
+    }
+
+    case 'deser:Vector3': {
+      const data = decodeHex(hexInput);
+      const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
+      const [msg] = Vector3.deserialize(view, 0);
+      console.log(` + "`X=${msg.x.toPrecision(9)}`" + `);
+      console.log(` + "`Y=${msg.y.toPrecision(9)}`" + `);
+      console.log(` + "`Z=${msg.z.toPrecision(9)}`" + `);
+      break;
+    }
+
+    case 'ser:SpawnMessage': {
+      const msg = new SpawnMessage();
+      msg.entityID = 42n;
+      msg.position = new Vector3();
+      msg.position.x = 10.0;
+      msg.position.y = 20.0;
+      msg.position.z = 30.0;
+      msg.health = -100;
+      msg.tags = ['hero', 'player'];
+      msg.data = [1, 2, 3];
+      const buf = new ArrayBuffer(512);
+      const view = new DataView(buf);
+      const n = msg.serialize(view, 0);
+      const bytes = new Uint8Array(buf, 0, n);
+      console.log(encodeHex(bytes));
+      break;
+    }
+
+    case 'deser:SpawnMessage': {
+      const data = decodeHex(hexInput);
+      const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
+      const [msg] = SpawnMessage.deserialize(view, 0);
+      console.log(` + "`EntityID=${msg.entityID.toString()}`" + `);
+      console.log(` + "`Position.X=${msg.position.x.toPrecision(9)}`" + `);
+      console.log(` + "`Position.Y=${msg.position.y.toPrecision(9)}`" + `);
+      console.log(` + "`Position.Z=${msg.position.z.toPrecision(9)}`" + `);
+      console.log(` + "`Health=${msg.health}`" + `);
+      for (let i = 0; i < msg.tags.length; i++) {
+        console.log(` + "`Tags[${i}]=${msg.tags[i]}`" + `);
+      }
+      for (let i = 0; i < msg.data.length; i++) {
+        console.log(` + "`Data[${i}]=${msg.data[i]}`" + `);
+      }
+      break;
+    }
+
+    case 'ser:MoveMessage': {
+      const msg = new MoveMessage();
+      msg.position = new Vector3();
+      msg.position.x = 50.0;
+      msg.position.y = -100.0;
+      msg.position.z = 0.0;
+      msg.velocity = [1.5, -2.5, 0.0];
+      msg.waypoints = [new Vector3()];
+      msg.waypoints[0].x = 10.0;
+      msg.waypoints[0].y = 20.0;
+      msg.waypoints[0].z = 0.0;
+      msg.playerID = 777;
+      msg.active = true;
+      msg.visible = false;
+      msg.ghost = true;
+      msg.name = 'TestPlayer';
+      const buf = new ArrayBuffer(512);
+      const view = new DataView(buf);
+      const n = msg.serialize(view, 0);
+      const bytes = new Uint8Array(buf, 0, n);
+      console.log(encodeHex(bytes));
+      break;
+    }
+
+    case 'deser:MoveMessage': {
+      const data = decodeHex(hexInput);
+      const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
+      const [msg] = MoveMessage.deserialize(view, 0);
+      console.log(` + "`PlayerID=${msg.playerID}`" + `);
+      console.log(` + "`Active=${msg.active.toString().toLowerCase()}`" + `);
+      console.log(` + "`Visible=${msg.visible.toString().toLowerCase()}`" + `);
+      console.log(` + "`Ghost=${msg.ghost.toString().toLowerCase()}`" + `);
+      console.log(` + "`Name=${msg.name}`" + `);
+      break;
+    }
+
+    case 'ser:EnvelopeMessage': {
+      const msg = new EnvelopeMessage();
+      msg.code = 2; // Opcode.JoinRoom
+      msg.counter = 7;
+      const buf = new ArrayBuffer(64);
+      const view = new DataView(buf);
+      const n = msg.serialize(view, 0);
+      const bytes = new Uint8Array(buf, 0, n);
+      console.log(encodeHex(bytes));
+      break;
+    }
+
+    case 'deser:EnvelopeMessage': {
+      const data = decodeHex(hexInput);
+      const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
+      const [msg] = EnvelopeMessage.deserialize(view, 0);
+      console.log(` + "`Code=${msg.code}`" + `);
+      console.log(` + "`Counter=${msg.counter}`" + `);
+      break;
+    }
+
+    default:
+      console.error(` + "`Unknown op:type ${op}:${typ}`" + `);
+      process.exit(1);
+  }
+}
+
+main();
+`

generator/ts.go

@@ -0,0 +1,635 @@
+package generator
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/edmand46/arpack/parser"
+)
+
+// GenerateTypeScript generates TypeScript code for the given messages
+func GenerateTypeScript(messages []parser.Message, namespace string) ([]byte, error) {
+	return GenerateTypeScriptSchema(parser.Schema{Messages: messages}, namespace)
+}
+
+// GenerateTypeScriptSchema generates TypeScript code from a schema
+func GenerateTypeScriptSchema(schema parser.Schema, namespace string) ([]byte, error) {
+	messages := schema.Messages
+	var b strings.Builder
+
+	b.WriteString("// <auto-generated> arpack </auto-generated>\n")
+	b.WriteString("// Code generated by arpack. DO NOT EDIT.\n\n")
+
+	enumNames := make(map[string]struct{}, len(schema.Enums))
+	for _, enum := range schema.Enums {
+		enumNames[enum.Name] = struct{}{}
+	}
+
+	// Generate enums
+	for _, enum := range schema.Enums {
+		writeTSEnum(&b, enum)
+		b.WriteString("\n")
+	}
+
+	// Generate messages
+	for i, msg := range messages {
+		if err := writeTSMessage(&b, msg, enumNames); err != nil {
+			return nil, fmt.Errorf("message %s: %w", msg.Name, err)
+		}
+		if i < len(messages)-1 {
+			b.WriteString("\n")
+		}
+	}
+
+	return []byte(b.String()), nil
+}
+
+func writeTSEnum(b *strings.Builder, enum parser.Enum) {
+	fmt.Fprintf(b, "export enum %s {\n", enum.Name)
+	for i, value := range enum.Values {
+		fmt.Fprintf(b, "  %s = %s", value.Name, value.Value)
+		if i < len(enum.Values)-1 {
+			b.WriteString(",")
+		}
+		b.WriteString("\n")
+	}
+	b.WriteString("}\n")
+}
+
+func writeTSMessage(b *strings.Builder, msg parser.Message, enumNames map[string]struct{}) error {
+	segs := segmentFields(msg.Fields)
+
+	fmt.Fprintf(b, "export class %s {\n", msg.Name)
+
+	// Field declarations with defaults
+	for _, f := range msg.Fields {
+		defaultValue := tsDefaultValue(f)
+		fmt.Fprintf(b, "  %s: %s = %s;\n", toCamelCase(f.Name), tsTypeName(f, enumNames), defaultValue)
+	}
+	b.WriteString("\n")
+
+	// Serialize method
+	b.WriteString("  serialize(view: DataView, offset: number): number {\n")
+	b.WriteString("    let pos = offset;\n")
+	for i, seg := range segs {
+		if seg.single != nil {
+			if err := writeTSSerializeField(b, "this", *seg.single, "    ", enumNames); err != nil {
+				return err
+			}
+		} else {
+			writeTSBoolGroupSerialize(b, "this", seg.bools, i, "    ")
+		}
+	}
+	b.WriteString("    return pos - offset;\n")
+	b.WriteString("  }\n\n")
+
+	// Deserialize method
+	fmt.Fprintf(b, "  static deserialize(view: DataView, offset: number): [%s, number] {\n", msg.Name)
+	b.WriteString("    let pos = offset;\n")
+	b.WriteString(fmt.Sprintf("    const msg = new %s();\n", msg.Name))
+	for i, seg := range segs {
+		if seg.single != nil {
+			if err := writeTSDeserializeField(b, "msg", *seg.single, "    ", enumNames); err != nil {
+				return err
+			}
+		} else {
+			writeTSBoolGroupDeserialize(b, "msg", seg.bools, i, "    ")
+		}
+	}
+	b.WriteString("    return [msg, pos - offset];\n")
+	b.WriteString("  }\n")
+
+	b.WriteString("}\n")
+	return nil
+}
+
+func writeTSBoolGroupSerialize(b *strings.Builder, recv string, bools []parser.Field, groupIdx int, indent string) {
+	varName := fmt.Sprintf("_boolByte%d", groupIdx)
+	fmt.Fprintf(b, "%slet %s = 0;\n", indent, varName)
+	for bit, f := range bools {
+		fmt.Fprintf(b, "%sif (%s.%s) %s |= 1 << %d;\n", indent, recv, toCamelCase(f.Name), varName, bit)
+	}
+	fmt.Fprintf(b, "%sview.setUint8(pos, %s);\n", indent, varName)
+	b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+}
+
+func writeTSBoolGroupDeserialize(b *strings.Builder, recv string, bools []parser.Field, groupIdx int, indent string) {
+	varName := fmt.Sprintf("_boolByte%d", groupIdx)
+	fmt.Fprintf(b, "%sconst %s = view.getUint8(pos);\n", indent, varName)
+	b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	for bit, f := range bools {
+		fmt.Fprintf(b, "%s%s.%s = (%s & (1 << %d)) !== 0;\n", indent, recv, toCamelCase(f.Name), varName, bit)
+	}
+}
+
+func writeTSSerializeField(b *strings.Builder, recv string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	access := recv + "." + toCamelCase(f.Name)
+	switch f.Kind {
+	case parser.KindPrimitive:
+		return writeTSSerializePrimitive(b, access, f, indent, enumNames)
+	case parser.KindNested:
+		fmt.Fprintf(b, "%spos += %s.serialize(view, pos);\n", indent, access)
+	case parser.KindFixedArray:
+		iVar := "_i" + f.Name
+		fmt.Fprintf(b, "%sfor (let %s = 0; %s < %d; %s++) {\n",
+			indent, iVar, iVar, f.FixedLen, iVar)
+		elemField := parser.Field{
+			Name:      f.Name + "[" + iVar + "]",
+			Kind:      f.Elem.Kind,
+			Primitive: f.Elem.Primitive,
+			NamedType: f.Elem.NamedType,
+			Quant:     f.Elem.Quant,
+			TypeName:  f.Elem.TypeName,
+			Elem:      f.Elem.Elem,
+			FixedLen:  f.Elem.FixedLen,
+		}
+		if err := writeTSSerializeField(b, recv, elemField, indent+"  ", enumNames); err != nil {
+			return err
+		}
+		fmt.Fprintf(b, "%s}\n", indent)
+	case parser.KindSlice:
+		fmt.Fprintf(b, "%sview.setUint16(pos, %s.length, true);\n", indent, access)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		iVar := "_i" + f.Name
+		fmt.Fprintf(b, "%sfor (const %s of %s) {\n", indent, iVar, access)
+		elemField := parser.Field{
+			Name:      iVar,
+			Kind:      f.Elem.Kind,
+			Primitive: f.Elem.Primitive,
+			NamedType: f.Elem.NamedType,
+			Quant:     f.Elem.Quant,
+			TypeName:  f.Elem.TypeName,
+			Elem:      f.Elem.Elem,
+			FixedLen:  f.Elem.FixedLen,
+		}
+		if err := writeTSSerializeFieldElement(b, iVar, elemField, indent+"  ", enumNames); err != nil {
+			return err
+		}
+		fmt.Fprintf(b, "%s}\n", indent)
+	}
+	return nil
+}
+
+func writeTSSerializeFieldElement(b *strings.Builder, access string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	switch f.Kind {
+	case parser.KindPrimitive:
+		return writeTSSerializePrimitiveElement(b, access, f, indent, enumNames)
+	case parser.KindNested:
+		fmt.Fprintf(b, "%spos += %s.serialize(view, pos);\n", indent, access)
+	}
+	return nil
+}
+
+func writeTSSerializePrimitiveElement(b *strings.Builder, access string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	if f.Quant != nil {
+		return writeTSSerializeQuantElement(b, access, f, indent)
+	}
+
+	valueExpr := tsSerializeValueExpr(access, f, enumNames)
+	switch f.Primitive {
+	case parser.KindFloat32:
+		fmt.Fprintf(b, "%sview.setFloat32(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindFloat64:
+		fmt.Fprintf(b, "%sview.setFloat64(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindInt8:
+		fmt.Fprintf(b, "%sview.setInt8(pos, %s);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindUint8:
+		fmt.Fprintf(b, "%sview.setUint8(pos, %s);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindBool:
+		fmt.Fprintf(b, "%sview.setUint8(pos, %s ? 1 : 0);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindInt16:
+		fmt.Fprintf(b, "%sview.setInt16(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindUint16:
+		fmt.Fprintf(b, "%sview.setUint16(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindInt32:
+		fmt.Fprintf(b, "%sview.setInt32(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindUint32:
+		fmt.Fprintf(b, "%sview.setUint32(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindInt64:
+		fmt.Fprintf(b, "%sview.setBigInt64(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindUint64:
+		fmt.Fprintf(b, "%sview.setBigUint64(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindString:
+		lenVar := "_slen" + sanitizeVarName(access)
+		fmt.Fprintf(b, "%sconst %s = new TextEncoder().encode(%s);\n", indent, lenVar, valueExpr)
+		fmt.Fprintf(b, "%sview.setUint16(pos, %s.length, true);\n", indent, lenVar)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		fmt.Fprintf(b, "%snew Uint8Array(view.buffer, pos, %s.length).set(%s);\n", indent, lenVar, lenVar)
+		fmt.Fprintf(b, "%spos += %s.length;\n", indent, lenVar)
+	}
+	return nil
+}
+
+func writeTSSerializePrimitive(b *strings.Builder, access string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	if f.Quant != nil {
+		return writeTSSerializeQuant(b, access, f, indent)
+	}
+
+	valueExpr := tsSerializeValueExpr(access, f, enumNames)
+	switch f.Primitive {
+	case parser.KindFloat32:
+		fmt.Fprintf(b, "%sview.setFloat32(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindFloat64:
+		fmt.Fprintf(b, "%sview.setFloat64(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindInt8:
+		fmt.Fprintf(b, "%sview.setInt8(pos, %s);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindUint8:
+		fmt.Fprintf(b, "%sview.setUint8(pos, %s);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindBool:
+		fmt.Fprintf(b, "%sview.setUint8(pos, %s ? 1 : 0);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindInt16:
+		fmt.Fprintf(b, "%sview.setInt16(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindUint16:
+		fmt.Fprintf(b, "%sview.setUint16(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindInt32:
+		fmt.Fprintf(b, "%sview.setInt32(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindUint32:
+		fmt.Fprintf(b, "%sview.setUint32(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindInt64:
+		fmt.Fprintf(b, "%sview.setBigInt64(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindUint64:
+		fmt.Fprintf(b, "%sview.setBigUint64(pos, %s, true);\n", indent, valueExpr)
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindString:
+		lenVar := "_slen" + sanitizeVarName(access)
+		fmt.Fprintf(b, "%sconst %s = new TextEncoder().encode(%s);\n", indent, lenVar, valueExpr)
+		fmt.Fprintf(b, "%sview.setUint16(pos, %s.length, true);\n", indent, lenVar)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		fmt.Fprintf(b, "%snew Uint8Array(view.buffer, pos, %s.length).set(%s);\n", indent, lenVar, lenVar)
+		fmt.Fprintf(b, "%spos += %s.length;\n", indent, lenVar)
+	}
+	return nil
+}
+
+func writeTSSerializeQuant(b *strings.Builder, access string, f parser.Field, indent string) error {
+	q := f.Quant
+	maxUint := q.MaxUint()
+	varName := "_q" + sanitizeVarName(access)
+	if q.Bits == 8 {
+		fmt.Fprintf(b, "%sconst %s = Math.round((%s - (%g)) / (%g - (%g)) * %g);\n",
+			indent, varName, access, q.Min, q.Max, q.Min, maxUint)
+		fmt.Fprintf(b, "%sview.setUint8(pos, %s);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	} else {
+		fmt.Fprintf(b, "%sconst %s = Math.round((%s - (%g)) / (%g - (%g)) * %g);\n",
+			indent, varName, access, q.Min, q.Max, q.Min, maxUint)
+		fmt.Fprintf(b, "%sview.setUint16(pos, %s, true);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	}
+	return nil
+}
+
+func writeTSSerializeQuantElement(b *strings.Builder, access string, f parser.Field, indent string) error {
+	q := f.Quant
+	maxUint := q.MaxUint()
+	varName := "_q" + sanitizeVarName(access)
+	if q.Bits == 8 {
+		fmt.Fprintf(b, "%sconst %s = Math.round((%s - (%g)) / (%g - (%g)) * %g);\n",
+			indent, varName, access, q.Min, q.Max, q.Min, maxUint)
+		fmt.Fprintf(b, "%sview.setUint8(pos, %s);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	} else {
+		fmt.Fprintf(b, "%sconst %s = Math.round((%s - (%g)) / (%g - (%g)) * %g);\n",
+			indent, varName, access, q.Min, q.Max, q.Min, maxUint)
+		fmt.Fprintf(b, "%sview.setUint16(pos, %s, true);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	}
+	return nil
+}
+
+func writeTSDeserializeField(b *strings.Builder, recv string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	access := recv + "." + toCamelCase(f.Name)
+	switch f.Kind {
+	case parser.KindPrimitive:
+		return writeTSDeserializePrimitive(b, access, f, indent, enumNames)
+	case parser.KindNested:
+		fmt.Fprintf(b, "%sconst [_%s, _n%s] = %s.deserialize(view, pos);\n", indent, f.Name, f.Name, f.TypeName)
+		fmt.Fprintf(b, "%s%s = _%s;\n", indent, access, f.Name)
+		fmt.Fprintf(b, "%spos += _n%s;\n", indent, f.Name)
+	case parser.KindFixedArray:
+		iVar := "_i" + f.Name
+		fmt.Fprintf(b, "%s%s = new Array(%d);\n", indent, access, f.FixedLen)
+		fmt.Fprintf(b, "%sfor (let %s = 0; %s < %d; %s++) {\n",
+			indent, iVar, iVar, f.FixedLen, iVar)
+		elemField := parser.Field{
+			Name:      f.Name + "[" + iVar + "]",
+			Kind:      f.Elem.Kind,
+			Primitive: f.Elem.Primitive,
+			NamedType: f.Elem.NamedType,
+			Quant:     f.Elem.Quant,
+			TypeName:  f.Elem.TypeName,
+			Elem:      f.Elem.Elem,
+			FixedLen:  f.Elem.FixedLen,
+		}
+		if err := writeTSDeserializeField(b, recv, elemField, indent+"  ", enumNames); err != nil {
+			return err
+		}
+		fmt.Fprintf(b, "%s}\n", indent)
+	case parser.KindSlice:
+		lenVar := "_len" + f.Name
+		fmt.Fprintf(b, "%sconst %s = view.getUint16(pos, true);\n", indent, lenVar)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		fmt.Fprintf(b, "%s%s = new Array(%s);\n", indent, access, lenVar)
+		iVar := "_i" + f.Name
+		fmt.Fprintf(b, "%sfor (let %s = 0; %s < %s; %s++) {\n", indent, iVar, iVar, lenVar, iVar)
+		elemField := parser.Field{
+			Name:      f.Name + "[" + iVar + "]",
+			Kind:      f.Elem.Kind,
+			Primitive: f.Elem.Primitive,
+			NamedType: f.Elem.NamedType,
+			Quant:     f.Elem.Quant,
+			TypeName:  f.Elem.TypeName,
+			Elem:      f.Elem.Elem,
+			FixedLen:  f.Elem.FixedLen,
+		}
+		if err := writeTSDeserializeFieldElement(b, recv, elemField, indent+"  ", enumNames); err != nil {
+			return err
+		}
+		fmt.Fprintf(b, "%s}\n", indent)
+	}
+	return nil
+}
+
+func writeTSDeserializeFieldElement(b *strings.Builder, recv string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	access := recv + "." + toCamelCase(f.Name)
+	switch f.Kind {
+	case parser.KindPrimitive:
+		return writeTSDeserializePrimitiveElement(b, access, f, indent, enumNames)
+	case parser.KindNested:
+		fmt.Fprintf(b, "%sconst [_elem, _nElem] = %s.deserialize(view, pos);\n", indent, f.TypeName)
+		fmt.Fprintf(b, "%s%s = _elem;\n", indent, access)
+		fmt.Fprintf(b, "%spos += _nElem;\n", indent)
+	}
+	return nil
+}
+
+func writeTSDeserializePrimitiveElement(b *strings.Builder, access string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	if f.Quant != nil {
+		return writeTSDeserializeQuantElement(b, access, f, indent)
+	}
+
+	switch f.Primitive {
+	case parser.KindFloat32:
+		expr := fmt.Sprintf("view.getFloat32(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindFloat64:
+		expr := fmt.Sprintf("view.getFloat64(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindInt8:
+		expr := fmt.Sprintf("view.getInt8(pos)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindUint8:
+		expr := fmt.Sprintf("view.getUint8(pos)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindBool:
+		expr := fmt.Sprintf("view.getUint8(pos) !== 0")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindInt16:
+		expr := fmt.Sprintf("view.getInt16(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindUint16:
+		expr := fmt.Sprintf("view.getUint16(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindInt32:
+		expr := fmt.Sprintf("view.getInt32(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindUint32:
+		expr := fmt.Sprintf("view.getUint32(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindInt64:
+		expr := fmt.Sprintf("view.getBigInt64(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindUint64:
+		expr := fmt.Sprintf("view.getBigUint64(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindString:
+		lenVar := "_slen" + sanitizeVarName(access)
+		fmt.Fprintf(b, "%sconst %s = view.getUint16(pos, true);\n", indent, lenVar)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		expr := fmt.Sprintf("new TextDecoder().decode(new Uint8Array(view.buffer, pos, %s))", lenVar)
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		fmt.Fprintf(b, "%spos += %s;\n", indent, lenVar)
+	}
+	return nil
+}
+
+func writeTSDeserializePrimitive(b *strings.Builder, access string, f parser.Field, indent string, enumNames map[string]struct{}) error {
+	if f.Quant != nil {
+		return writeTSDeserializeQuant(b, access, f, indent)
+	}
+
+	switch f.Primitive {
+	case parser.KindFloat32:
+		expr := fmt.Sprintf("view.getFloat32(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindFloat64:
+		expr := fmt.Sprintf("view.getFloat64(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindInt8:
+		expr := fmt.Sprintf("view.getInt8(pos)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindUint8:
+		expr := fmt.Sprintf("view.getUint8(pos)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindBool:
+		expr := fmt.Sprintf("view.getUint8(pos) !== 0")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+	case parser.KindInt16:
+		expr := fmt.Sprintf("view.getInt16(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindUint16:
+		expr := fmt.Sprintf("view.getUint16(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+	case parser.KindInt32:
+		expr := fmt.Sprintf("view.getInt32(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindUint32:
+		expr := fmt.Sprintf("view.getUint32(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 4;\n", indent))
+	case parser.KindInt64:
+		expr := fmt.Sprintf("view.getBigInt64(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindUint64:
+		expr := fmt.Sprintf("view.getBigUint64(pos, true)")
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		b.WriteString(fmt.Sprintf("%spos += 8;\n", indent))
+	case parser.KindString:
+		lenVar := "_slen" + sanitizeVarName(access)
+		fmt.Fprintf(b, "%sconst %s = view.getUint16(pos, true);\n", indent, lenVar)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		expr := fmt.Sprintf("new TextDecoder().decode(new Uint8Array(view.buffer, pos, %s))", lenVar)
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, enumNames))
+		fmt.Fprintf(b, "%spos += %s;\n", indent, lenVar)
+	}
+	return nil
+}
+
+func writeTSDeserializeQuant(b *strings.Builder, access string, f parser.Field, indent string) error {
+	q := f.Quant
+	maxUint := q.MaxUint()
+	varName := "_q" + sanitizeVarName(access)
+	if q.Bits == 8 {
+		fmt.Fprintf(b, "%sconst %s = view.getUint8(pos);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+		expr := fmt.Sprintf("%s / %g * (%g - (%g)) + (%g)", varName, maxUint, q.Max, q.Min, q.Min)
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, nil))
+	} else {
+		fmt.Fprintf(b, "%sconst %s = view.getUint16(pos, true);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		expr := fmt.Sprintf("%s / %g * (%g - (%g)) + (%g)", varName, maxUint, q.Max, q.Min, q.Min)
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, nil))
+	}
+	return nil
+}
+
+func writeTSDeserializeQuantElement(b *strings.Builder, access string, f parser.Field, indent string) error {
+	q := f.Quant
+	maxUint := q.MaxUint()
+	varName := "_q" + sanitizeVarName(access)
+	if q.Bits == 8 {
+		fmt.Fprintf(b, "%sconst %s = view.getUint8(pos);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 1;\n", indent))
+		expr := fmt.Sprintf("%s / %g * (%g - (%g)) + (%g)", varName, maxUint, q.Max, q.Min, q.Min)
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, nil))
+	} else {
+		fmt.Fprintf(b, "%sconst %s = view.getUint16(pos, true);\n", indent, varName)
+		b.WriteString(fmt.Sprintf("%spos += 2;\n", indent))
+		expr := fmt.Sprintf("%s / %g * (%g - (%g)) + (%g)", varName, maxUint, q.Max, q.Min, q.Min)
+		fmt.Fprintf(b, "%s%s = %s;\n", indent, access, tsDeserializeValueExpr(expr, f, nil))
+	}
+	return nil
+}
+
+func tsTypeName(f parser.Field, enumNames map[string]struct{}) string {
+	switch f.Kind {
+	case parser.KindPrimitive:
+		if tsIsEnumType(f, enumNames) {
+			return f.NamedType
+		}
+		return tsPrimitiveTypeName(f.Primitive)
+	case parser.KindNested:
+		return f.TypeName
+	case parser.KindFixedArray, parser.KindSlice:
+		return tsTypeName(*f.Elem, enumNames) + "[]"
+	}
+	return "unknown"
+}
+
+func tsPrimitiveTypeName(k parser.PrimitiveKind) string {
+	switch k {
+	case parser.KindFloat32, parser.KindFloat64:
+		return "number"
+	case parser.KindInt8, parser.KindInt16, parser.KindInt32, parser.KindUint8, parser.KindUint16, parser.KindUint32:
+		return "number"
+	case parser.KindInt64, parser.KindUint64:
+		return "bigint"
+	case parser.KindBool:
+		return "boolean"
+	case parser.KindString:
+		return "string"
+	}
+	return "unknown"
+}
+
+func tsDefaultValue(f parser.Field) string {
+	switch f.Kind {
+	case parser.KindPrimitive:
+		if tsIsEnumType(f, nil) {
+			return "0"
+		}
+		switch f.Primitive {
+		case parser.KindFloat32, parser.KindFloat64, parser.KindInt8, parser.KindInt16, parser.KindInt32,
+			parser.KindUint8, parser.KindUint16, parser.KindUint32:
+			return "0"
+		case parser.KindInt64, parser.KindUint64:
+			return "0n"
+		case parser.KindBool:
+			return "false"
+		case parser.KindString:
+			return `""`
+		}
+	case parser.KindNested:
+		return fmt.Sprintf("new %s()", f.TypeName)
+	case parser.KindFixedArray:
+		elemDefault := tsDefaultValue(*f.Elem)
+		elemType := tsTypeName(*f.Elem, nil)
+		return fmt.Sprintf("new Array<%s>(%d).fill(%s)", elemType, f.FixedLen, elemDefault)
+	case parser.KindSlice:
+		return "[]"
+	}
+	return "undefined"
+}
+
+func tsSerializeValueExpr(access string, f parser.Field, enumNames map[string]struct{}) string {
+	if !tsIsEnumType(f, enumNames) {
+		return access
+	}
+	return access + " as " + tsPrimitiveTypeName(f.Primitive)
+}
+
+func tsDeserializeValueExpr(expr string, f parser.Field, enumNames map[string]struct{}) string {
+	if !tsIsEnumType(f, enumNames) {
+		return expr
+	}
+	return "(" + expr + " as " + f.NamedType + ")"
+}
+
+func tsIsEnumType(f parser.Field, enumNames map[string]struct{}) bool {
+	if f.NamedType == "" || enumNames == nil {
+		return false
+	}
+	_, ok := enumNames[f.NamedType]
+	return ok
+}
+
+// toCamelCase converts PascalCase to camelCase (e.g., EntityID -> entityID)
+func toCamelCase(s string) string {
+	if s == "" {
+		return ""
+	}
+	// First character to lowercase
+	result := strings.ToLower(s[:1]) + s[1:]
+	return result
+}

generator/ts_test.go

@@ -0,0 +1,401 @@
+package generator
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/edmand46/arpack/parser"
+)
+
+func TestGenerateTypeScript_Primitives(t *testing.T) {
+	schema := parser.Schema{
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "PrimitiveMessage",
+				Fields: []parser.Field{
+					{Name: "F32", Kind: parser.KindPrimitive, Primitive: parser.KindFloat32},
+					{Name: "F64", Kind: parser.KindPrimitive, Primitive: parser.KindFloat64},
+					{Name: "I8", Kind: parser.KindPrimitive, Primitive: parser.KindInt8},
+					{Name: "I16", Kind: parser.KindPrimitive, Primitive: parser.KindInt16},
+					{Name: "I32", Kind: parser.KindPrimitive, Primitive: parser.KindInt32},
+					{Name: "I64", Kind: parser.KindPrimitive, Primitive: parser.KindInt64},
+					{Name: "U8", Kind: parser.KindPrimitive, Primitive: parser.KindUint8},
+					{Name: "U16", Kind: parser.KindPrimitive, Primitive: parser.KindUint16},
+					{Name: "U32", Kind: parser.KindPrimitive, Primitive: parser.KindUint32},
+					{Name: "U64", Kind: parser.KindPrimitive, Primitive: parser.KindUint64},
+					{Name: "B", Kind: parser.KindPrimitive, Primitive: parser.KindBool},
+					{Name: "S", Kind: parser.KindPrimitive, Primitive: parser.KindString},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check field declarations (now using camelCase)
+	if !strings.Contains(code, "f32: number = 0;") {
+		t.Error("Missing f32 field")
+	}
+	if !strings.Contains(code, "i64: bigint = 0n;") {
+		t.Error("Missing i64 field with bigint type")
+	}
+	if !strings.Contains(code, "u64: bigint = 0n;") {
+		t.Error("Missing u64 field with bigint type")
+	}
+	if !strings.Contains(code, "b: boolean = false;") {
+		t.Error("Missing b field")
+	}
+	if !strings.Contains(code, "s: string = \"\";") {
+		t.Error("Missing s field")
+	}
+
+	// Check serialize method exists
+	if !strings.Contains(code, "serialize(view: DataView, offset: number): number") {
+		t.Error("Missing serialize method")
+	}
+
+	// Check deserialize method exists
+	if !strings.Contains(code, "static deserialize(view: DataView, offset: number): [PrimitiveMessage, number]") {
+		t.Error("Missing deserialize method")
+	}
+}
+
+func TestGenerateTypeScript_QuantizedFloats(t *testing.T) {
+	schema := parser.Schema{
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "QuantMessage",
+				Fields: []parser.Field{
+					{
+						Name:      "Q8",
+						Kind:      parser.KindPrimitive,
+						Primitive: parser.KindFloat32,
+						Quant:     &parser.QuantInfo{Min: 0, Max: 100, Bits: 8},
+					},
+					{
+						Name:      "Q16",
+						Kind:      parser.KindPrimitive,
+						Primitive: parser.KindFloat32,
+						Quant:     &parser.QuantInfo{Min: -500, Max: 500, Bits: 16},
+					},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check 8-bit quantization (using camelCase field names)
+	if !strings.Contains(code, "Math.round((this.q8 - (0)) / (100 - (0)) * 255)") {
+		t.Error("Missing 8-bit quantization code")
+	}
+
+	// Check 16-bit quantization (using camelCase field names)
+	if !strings.Contains(code, "Math.round((this.q16 - (-500)) / (500 - (-500)) * 65535)") {
+		t.Error("Missing 16-bit quantization code")
+	}
+
+	// Check deserialization with dequantization
+	if !strings.Contains(code, "/ 255 * (100 - (0)) + (0)") {
+		t.Error("Missing 8-bit dequantization")
+	}
+	if !strings.Contains(code, "/ 65535 * (500 - (-500)) + (-500)") {
+		t.Error("Missing 16-bit dequantization")
+	}
+}
+
+func TestGenerateTypeScript_BoolPacking(t *testing.T) {
+	schema := parser.Schema{
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "BoolMessage",
+				Fields: []parser.Field{
+					{Name: "A", Kind: parser.KindPrimitive, Primitive: parser.KindBool},
+					{Name: "B", Kind: parser.KindPrimitive, Primitive: parser.KindBool},
+					{Name: "C", Kind: parser.KindPrimitive, Primitive: parser.KindBool},
+					{Name: "X", Kind: parser.KindPrimitive, Primitive: parser.KindUint32},
+					{Name: "D", Kind: parser.KindPrimitive, Primitive: parser.KindBool},
+					{Name: "E", Kind: parser.KindPrimitive, Primitive: parser.KindBool},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check that consecutive bools are packed (using camelCase field names)
+	if !strings.Contains(code, "let _boolByte0 = 0;") {
+		t.Error("Missing first bool group packing")
+	}
+	if !strings.Contains(code, "if (this.a) _boolByte0 |= 1 << 0;") {
+		t.Error("Missing a bool packing")
+	}
+	if !strings.Contains(code, "if (this.b) _boolByte0 |= 1 << 1;") {
+		t.Error("Missing b bool packing")
+	}
+	if !strings.Contains(code, "if (this.c) _boolByte0 |= 1 << 2;") {
+		t.Error("Missing c bool packing")
+	}
+
+	// Check second bool group after uint32 (index is 2, not 4, based on segment index)
+	if !strings.Contains(code, "let _boolByte2 = 0;") {
+		t.Error("Missing second bool group packing")
+	}
+
+	// Check deserialization (using camelCase field names)
+	if !strings.Contains(code, "msg.a = (_boolByte0 & (1 << 0)) !== 0;") {
+		t.Error("Missing a bool unpacking")
+	}
+}
+
+func TestGenerateTypeScript_NestedTypes(t *testing.T) {
+	schema := parser.Schema{
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "Inner",
+				Fields: []parser.Field{
+					{Name: "Value", Kind: parser.KindPrimitive, Primitive: parser.KindInt32},
+				},
+			},
+			{
+				PackageName: "test",
+				Name:        "Outer",
+				Fields: []parser.Field{
+					{Name: "Inner", Kind: parser.KindNested, TypeName: "Inner"},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check nested type default value (using camelCase field name)
+	if !strings.Contains(code, "inner: Inner = new Inner();") {
+		t.Error("Missing nested type field with default")
+	}
+
+	// Check serialize calls nested serialize (using camelCase field name)
+	if !strings.Contains(code, "pos += this.inner.serialize(view, pos);") {
+		t.Error("Missing nested serialize call")
+	}
+
+	// Check deserialize calls nested deserialize
+	if !strings.Contains(code, "const [_Inner, _nInner] = Inner.deserialize(view, pos);") {
+		t.Error("Missing nested deserialize call")
+	}
+}
+
+func TestGenerateTypeScript_FixedArrays(t *testing.T) {
+	schema := parser.Schema{
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "ArrayMessage",
+				Fields: []parser.Field{
+					{
+						Name:     "Values",
+						Kind:     parser.KindFixedArray,
+						FixedLen: 3,
+						Elem: &parser.Field{
+							Kind:      parser.KindPrimitive,
+							Primitive: parser.KindFloat32,
+						},
+					},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check default value (using camelCase field name)
+	if !strings.Contains(code, "values: number[] = new Array<number>(3).fill(0);") {
+		t.Error("Missing fixed array field with default")
+	}
+
+	// Check serialization loop (using camelCase field name)
+	if !strings.Contains(code, "for (let _iValues = 0; _iValues < 3; _iValues++)") {
+		t.Error("Missing fixed array serialization loop")
+	}
+
+	// Check deserialization loop (using camelCase field name)
+	if !strings.Contains(code, "msg.values = new Array(3);") {
+		t.Error("Missing fixed array allocation in deserialize")
+	}
+}
+
+func TestGenerateTypeScript_Slices(t *testing.T) {
+	schema := parser.Schema{
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "SliceMessage",
+				Fields: []parser.Field{
+					{
+						Name: "Items",
+						Kind: parser.KindSlice,
+						Elem: &parser.Field{
+							Kind:      parser.KindPrimitive,
+							Primitive: parser.KindInt32,
+						},
+					},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check default value (using camelCase field name)
+	if !strings.Contains(code, "items: number[] = [];") {
+		t.Error("Missing slice field with default")
+	}
+
+	// Check length prefix in serialize (using camelCase field name)
+	if !strings.Contains(code, "view.setUint16(pos, this.items.length, true);") {
+		t.Error("Missing slice length prefix in serialize")
+	}
+
+	// Check length reading in deserialize
+	if !strings.Contains(code, "const _lenItems = view.getUint16(pos, true);") {
+		t.Error("Missing slice length reading in deserialize")
+	}
+
+	// Check array allocation in deserialize (using camelCase field name)
+	if !strings.Contains(code, "msg.items = new Array(_lenItems);") {
+		t.Error("Missing slice allocation in deserialize")
+	}
+}
+
+func TestGenerateTypeScript_Enums(t *testing.T) {
+	schema := parser.Schema{
+		Enums: []parser.Enum{
+			{
+				Name:      "Status",
+				Primitive: parser.KindUint16,
+				Values: []parser.EnumValue{
+					{Name: "Pending", Value: "0"},
+					{Name: "Active", Value: "1"},
+					{Name: "Done", Value: "2"},
+				},
+			},
+		},
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "EnumMessage",
+				Fields: []parser.Field{
+					{
+						Name:      "Status",
+						Kind:      parser.KindPrimitive,
+						Primitive: parser.KindUint16,
+						NamedType: "Status",
+					},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check enum definition
+	if !strings.Contains(code, "export enum Status {") {
+		t.Error("Missing enum definition")
+	}
+	if !strings.Contains(code, "Pending = 0,") {
+		t.Error("Missing Pending enum value")
+	}
+	if !strings.Contains(code, "Active = 1,") {
+		t.Error("Missing Active enum value")
+	}
+
+	// Check enum field type (using camelCase field name)
+	if !strings.Contains(code, "status: Status = 0;") {
+		t.Error("Missing enum field with correct type")
+	}
+
+	// Check enum serialization (cast to number, using camelCase field name)
+	if !strings.Contains(code, "view.setUint16(pos, this.status as number, true);") {
+		t.Error("Missing enum cast in serialize")
+	}
+
+	// Check enum deserialization (cast from number, using camelCase field name)
+	if !strings.Contains(code, "msg.status = (view.getUint16(pos, true) as Status);") {
+		t.Error("Missing enum cast in deserialize")
+	}
+}
+
+func TestGenerateTypeScript_Strings(t *testing.T) {
+	schema := parser.Schema{
+		Messages: []parser.Message{
+			{
+				PackageName: "test",
+				Name:        "StringMessage",
+				Fields: []parser.Field{
+					{Name: "Name", Kind: parser.KindPrimitive, Primitive: parser.KindString},
+				},
+			},
+		},
+	}
+
+	src, err := GenerateTypeScriptSchema(schema, "Test")
+	if err != nil {
+		t.Fatalf("GenerateTypeScriptSchema: %v", err)
+	}
+
+	code := string(src)
+
+	// Check TextEncoder usage
+	if !strings.Contains(code, "new TextEncoder().encode(") {
+		t.Error("Missing TextEncoder in serialize")
+	}
+
+	// Check length prefix
+	if !strings.Contains(code, "view.setUint16(pos, _slen") {
+		t.Error("Missing string length prefix in serialize")
+	}
+
+	// Check TextDecoder usage
+	if !strings.Contains(code, "new TextDecoder().decode(") {
+		t.Error("Missing TextDecoder in deserialize")
+	}
+}