@tsonic/dotnet-types

TypeScript declarations and metadata for .NET 10.0

Version

.NET Version: 10.0.0-rc.1.25451.107
Package Version: 10.0.0
Assemblies: 38 (76 files)
Generated: 2025-11-02

Installation

``bash
npm install @tsonic/dotnet-types@10.0.0
`

What's Included

This package provides TypeScript declaration files (.d.ts) and C# metadata (.metadata.json) for the .NET 10 Base Class Library:

- Collections - System.Collections, Concurrent, Immutable, Specialized
- LINQ - System.Linq, Expressions, Parallel, Queryable, AsyncEnumerable
- I/O - System.IO, FileSystem, Compression, Pipes
- Text - System.Text.Json, RegularExpressions, Encoding
- Networking - System.Net.Http, Sockets, WebSockets
- Threading - System.Threading, Tasks, Channels
- Data & XML - System.Data, System.Xml
- Security - System.Security.Cryptography, Claims
- Diagnostics - System.Diagnostics.Process, DiagnosticSource
- Core - System.Runtime, Console, ComponentModel, Reflection, Memory

Usage

$3

The Tsonic compiler will automatically discover these files when the package is installed:

`typescript
// Your TypeScript code targeting .NET 10
import { List } from "System.Collections.Generic";

const names = new List();
names.Add("Alice");
`

$3

All type files are located in the types/ directory:

`
node_modules/@tsonic/dotnet-types/
├── types/
│ ├── index.json # Manifest
│ ├── System.Runtime.d.ts # Type declarations
│ ├── System.Runtime.metadata.json # C# metadata
│ └── ...
└── README.md
`

$3

`javascript
import manifest from '@tsonic/dotnet-types/types/index.json';

console.log(manifest.dotnetVersion); // "10.0.0-rc.1.25451.107"
console.log(manifest.files); // Array of all type files
`

Metadata Files

Each .metadata.json file contains C# semantic information that TypeScript cannot express:

- Whether methods are virtual, abstract, sealed, or override
- Type kinds (class, struct, interface, enum)
- Base types and implemented interfaces
- Member accessibility (public, protected, private, internal)

The Tsonic compiler uses this metadata to generate correct C# code with proper inheritance semantics.

Other .NET Versions

This package contains declarations for .NET 10.0 only. For other versions:

- .NET 9: npm install @tsonic/dotnet-types@9.0.0 (coming soon)
- .NET 11: npm install @tsonic/dotnet-types@11.0.0` (coming soon)

See the main repository for all available versions.

Regeneration

These files are generated artifacts. To regenerate:

1. Use the generatedts tool
2. Run against the .NET 10.0 runtime
3. Copy output to this package

License

MIT - See LICENSE

Related

- Tsonic Compiler
- All dotnet-types versions