TypeSpec language preview

1. A user model and route

decorators, a model, and an HTTP interface

horizon-dark

import "@typespec/http";
using TypeSpec.Http;

@doc("A simple user model")
model User {
  @key
  id: string;

  name: string;
  age?: int32;
}

@route("/users")
interface Users {
  @get op list(): User[];
}

atom-one-dark

import "@typespec/http";
using TypeSpec.Http;

@doc("A simple user model")
model User {
  @key
  id: string;

  name: string;
  age?: int32;
}

@route("/users")
interface Users {
  @get op list(): User[];
}

github-dark

import "@typespec/http";
using TypeSpec.Http;

@doc("A simple user model")
model User {
  @key
  id: string;

  name: string;
  age?: int32;
}

@route("/users")
interface Users {
  @get op list(): User[];
}

dracula

import "@typespec/http";
using TypeSpec.Http;

@doc("A simple user model")
model User {
  @key
  id: string;

  name: string;
  age?: int32;
}

@route("/users")
interface Users {
  @get op list(): User[];
}

nord

import "@typespec/http";
using TypeSpec.Http;

@doc("A simple user model")
model User {
  @key
  id: string;

  name: string;
  age?: int32;
}

@route("/users")
interface Users {
  @get op list(): User[];
}

github

import "@typespec/http";
using TypeSpec.Http;

@doc("A simple user model")
model User {
  @key
  id: string;

  name: string;
  age?: int32;
}

@route("/users")
interface Users {
  @get op list(): User[];
}

2. Validation decorators

minLength, maxLength, and pattern

horizon-dark

model Username {
  @minLength(3)
  @maxLength(20)
  @pattern("^[a-z0-9_]+$")
  value: string;
}

atom-one-dark

model Username {
  @minLength(3)
  @maxLength(20)
  @pattern("^[a-z0-9_]+$")
  value: string;
}

github-dark

model Username {
  @minLength(3)
  @maxLength(20)
  @pattern("^[a-z0-9_]+$")
  value: string;
}

dracula

model Username {
  @minLength(3)
  @maxLength(20)
  @pattern("^[a-z0-9_]+$")
  value: string;
}

nord

model Username {
  @minLength(3)
  @maxLength(20)
  @pattern("^[a-z0-9_]+$")
  value: string;
}

github

model Username {
  @minLength(3)
  @maxLength(20)
  @pattern("^[a-z0-9_]+$")
  value: string;
}

3. Enums and unions

an enum and a union of string literals

horizon-dark

enum Status {
  Active,
  Inactive,
}

union Role {
  "admin",
  "member",
}

atom-one-dark

enum Status {
  Active,
  Inactive,
}

union Role {
  "admin",
  "member",
}

github-dark

enum Status {
  Active,
  Inactive,
}

union Role {
  "admin",
  "member",
}

dracula

enum Status {
  Active,
  Inactive,
}

union Role {
  "admin",
  "member",
}

nord

enum Status {
  Active,
  Inactive,
}

union Role {
  "admin",
  "member",
}

github

enum Status {
  Active,
  Inactive,
}

union Role {
  "admin",
  "member",
}