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Converts C# DTOs to Typescript Interfaces or classes using MSBuild Tasks.

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C# DTOs to Typescript Interfaces

MTT generates TypeScript interfaces from .NET DTOs. It implements most major features of the current TypeScript specification. This utility could be preferred over some others as it is completely independent of your IDE or workflow, because it uses a MSBUILD task and converts the code directly from the source. This means its great for .Net Core and VS Code.

Install

Using dotnet CLI:

dotnet add package MTTRunner

(The original package name is MTT.)

dotnet restore

Then in .csproj add a Target.

Options

WorkingDirectory is the input directory of the c# dtos

ConvertDirectory is the output directory of the ts interfaces

AutoGeneratedTag (default true) show "/* Auto Generated */" at the top of every file

EnumValues (default int enums) if set to Strings, generates typescript string enums

PathStyle (default is folders stay the same and files become camelCase) if set to Kebab, changes the file and directory names to kebab-case.

Example

.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="MTT" Version="0.6.5"/>
  </ItemGroup>

  <Target Name="Convert" BeforeTargets="PrepareForBuild">
    <ConvertMain WorkingDirectory="Resources/" ConvertDirectory="models/"/>
  </Target>

</Project>

Vehicle.cs

using System.Collections.Generic;
using Example.Resources.Parts;
using Example.Resources.Parts.Unit;

namespace Example.Resources.Vehicles
{
    public abstract class Vehicle : Entity 
    {
        public int Year { get; set; }
        public string Make { get; set; }
        public string Model { get; set; }
        public int? Mileage;
        public Dictionary<string, Units> Options { get; set; }
        public VehicleState Condition { get; set; }  // this is an enum of type int
        public virtual ICollection<Part> Parts { get; set; }
        public IList<Part> SpareParts { get; set; } = new List<Part>();
    }
}

vehicle.ts

/* Auto Generated */

import { Entity } from "./../entity";
import { Units } from "./../Parts/Unit/units";
import { VehicleState } from "./vehicleState";
import { Part } from "./../Parts/part";

export interface Vehicle extends Entity {
    year: number;
    make: string;
    model: string;
    mileage?: number;
    options: Map<string, Units>;
    condition: VehicleState;
    parts: Part[];
    spareParts: Part[];
}

Types

It correctly converts the following C# types to the equivalent typescript:

  • bool
  • byte
  • decimal
  • double
  • float
  • int
  • uint
  • long
  • sbyte
  • short
  • string
  • ulong
  • ushort
  • Boolean
  • Byte
  • Char
  • DateTime
  • Decimal
  • Double
  • Int16
  • Int32
  • Int64
  • SByte
  • UInt16
  • UInt32
  • UInt64
  • Array
  • Collection
  • Enumerbale
  • IEnumerable
  • ICollection
  • IList
  • Enum
  • Optional
  • virtual
  • abstract
  • Dictionary
  • IDictionary
  • Guid

Notes

If a Convert Directory is supplied, it will be deleted everytime script is ran and will be remade

Comments like // are ignored in c# files. Comments like /* */ could cause undefined behavior.

Tested on Windows 10, macOS Mojave, and Ubuntu 18.04

Follows the case and naming conventions of each language.

Thanks to natemcmaster this project really helped me out!

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Converts C# DTOs to Typescript Interfaces or classes using MSBuild Tasks.

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