@7nohe/laravel-typegen

Laravel Typegen

Table of contents

• Features
• Supported Versions
• Installation
• Usage
  • Enum Support
  • Laravel Enum Support
  • Use strongly typed route() function for ziggy
  • Useful types for Laravel
  • Form Request types
• Available Options
• Development
  • Setup example project
  • Debug
• License

Features

• Generate types from Laravel's Models
• Support Relationhips
• Support Enum (from PHP8.1)
• Generate types from Laravel's Form Requests
• Generate types for ziggy (Routing)
• Provide useful types for Laravel (e.g. pagination, etc.)

Supported Versions

This library supports the following versions:

• Laravel 9.x and 10.x
• TypeScript 5.0 and above

Installation

$ npm install -D @7nohe/laravel-typegen

Laravel Typegen may require installing doctrine/dbal via Composer in order to execute the php artisan model:show command internally.

$ composer require doctrine/dbal

Usage

Edit package.json

{
    "scripts": {
        "typegen": "laravel-typegen"
    },
}

$ npm run typegen

Enum Support

We also support php8.1 enums.

<!-- app/Enums/GenderType.php -->
<?php

namespace App\Enums;

enum GenderType: string
{
    case Male = 'Male';
    case Female = 'Female';
    case Other = 'Other';
}

Then, cast model attributes to enums.

<!-- app/Models/User.php -->
<?php

namespace App\Models;
use App\Enums\GenderType;

class User extends Authenticatable
{
    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'gender'            => GenderType::class,
    ];
}

This library will generate the following TypeScript types:

export type User = {
    id: number;
    name: string;
    email: string;
    gender: GenderType;
    email_verified_at?: string;
    created_at?: string;
    updated_at?: string;
    posts?: Post[];
};
export enum GenderType {
    Male = "Male",
    Female = "Female",
    Other = "Other"
}

Laravel Enum Support

If you use Laravel Enum, use the option --laravel-enum.

{
    "scripts": {
        "typegen": "laravel-typegen --laravel-enum"
    },
}

Use strongly typed route() function for ziggy

Running the laravel-typegen command with the --ziggy option will generate route.d.ts.

It helps typing the route() function.

{
    "scripts": {
        "typegen": "laravel-typegen --ziggy"
    },
}

For example, define the following routes

// routes/web.php
Route::resource('posts', PostsController::class);

$ php artisan route:list
GET|HEAD posts/{post} posts.show › PostsController@show

Parameters will be checked strictly based on the route name.

// in your TypeScript code

// OK
route('posts.show', { post: post.id })

// Error
route('posts.show', { id: post.id })

If you have created a project using the --typescript option of Laravel Breeze, you need to delete the declaration for the route() function in resources/js/types/global.d.ts.

import { PageProps as InertiaPageProps } from '@inertiajs/core';
import { AxiosInstance } from 'axios';
 import ziggyRoute, { Config as ZiggyConfig } from 'ziggy-js';
import { PageProps as AppPageProps } from './';

declare global {
    interface Window {
        axios: AxiosInstance;
    }

    var route: typeof ziggyRoute;
    var Ziggy: ZiggyConfig;
}

- declare module 'vue' {
-     interface ComponentCustomProperties {
-        route: typeof ziggyRoute;
-     }
- }

declare module '@inertiajs/core' {
    interface PageProps extends InertiaPageProps, AppPageProps {}
}

Useful types for Laravel

We provide useful types for Laravel (especially for Inertia).

For example, to return a paginated Inertia response in DashboardController, you can write the following

<?php

namespace App\Http\Controllers;

use App\Models\User;
use Inertia\Inertia;

class DashboardController extends Controller
{
    public function __invoke()
    {
        $users = User::latest('id')->paginate(5);
        return Inertia::render(
            'Dashboard',
            [
                'users' => $users
            ]
        );
    }
}

You can import types already defined by Laravel Typegen.

<!-- Dashboard.vue -->
<script setup lang="ts">
import { Paginate } from '@7nohe/laravel-typegen';
import { User } from '@/types/model'; // generated types

defineProps<{ users: Paginate<User> }>();

</script>
<template>
    <div>
        <ul>
            <li v-for="user in users.data">- {{ user.name }}({{ user.email }})</li>
        </ul>
        <div class="flex justify-center mt-4 space-x-4">
            <Link v-for="(link, key) in users.links" :key="key" :href="link.url ?? '#'" v-html="link.label" />
        </div>
    </div>
</template>

Form Request types

You can generate types from Laravel's Form Request by executing the command with the --form-requests option.

If you have the Form Request class as shown below:

<?php

namespace App\Http\Requests;

use App\Models\User;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class ProfileUpdateRequest extends FormRequest
{
    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, mixed>
     */
    public function rules()
    {
        return [
            'name' => ['string', 'max:255'],
            'email' => ['email', 'max:255', Rule::unique(User::class)->ignore($this->user()->id)],
        ];
    }
}

The corresponding TypeScript types will be automatically generated as follows:

// formRequests.ts
export type ProfileUpdateRequest = {
    name?: string;
    email?: string;
};

By using these generated types in combination with HTTP Client libraries like Axios, you can write more type-safe code.

Available options

Usage: laravel-typegen [options]

Generate TypeScript types from your Laravel code

Options:
  -V, --version         output the version number
  -o, --output <value>  Output directory (default: "resources/js/types")
  --laravel-enum        Use Laravel Enum (default: false)
  --enum-path <value>   Path to enum files (default: "app/Enums")
  --model-path <value>  Path to model files (default: "app/Models")
  -z, --ziggy           Generate types for ziggy (default: false)
  --vendor-routes       Include routes defined by vendor packages (default: false)
  --ignore-route-dts    Ignore generating route.d.ts (default: false)
  --form-request        Generate types for FormRequests (default: false)
  -h, --help            display help for command

Development

Setup example project

$ cd examples/laravel10-app
$ cp .env.example .env
$ docker run --rm \
    -u "$(id -u):$(id -g)" \
    -v "$(pwd):/var/www/html" \
    -w /var/www/html \
    laravelsail/php81-composer:latest \
    composer install --ignore-platform-reqs
$ ./vendor/bin/sail up -d
$ ./vendor/bin/sail php artisan key:generate
$ ./vendor/bin/sail php artisan migrate --seed
$ ./vendor/bin/sail npm install

Debug

$ pnpm install
$ sh debug.sh

License

MIT