This package can be used in Laravel 5.4 or higher.

You can install the package via composer:

composer require sparemusic/resumable-js

In Laravel 5.5 the service provider will automatically be registered. In older versions of Laravel, add the service provider in the config/app.php file:

'providers' => [
    // ...
    SpareMusic\ResumableJS\Providers\ResumableServiceProvider::class,
];

To create a resumable request class, use the make:resumable-request Artisan CLI command:

php artisan make:resumable-request SomeUpload

The generated class will be placed in the app/Http/ResumableRequests directory. If this directory does not exist, it will be created when you run the make:resumable-request command. Inside of this class there will be a setup method which will setup the upload.

/**
 * Setup resumable instance
 */
public function setup()
{
    $chunkPath = Storage::disk('local')->path('chunks');
    $uploadPath = Storage::disk('local')->path('uploads');

    $this->setChunkPath($chunkPath)
        ->setUploadPath($uploadPath)
        ->setValidator(function (UploadedFile $file, ResumableParameters $parameters) {
            return true;
        });
}

The $chunkPath variable is the directory to store all the chunks of the uploaded file (the directory will be created if it doesn't already exist).
The $uploadPath variable is the directory to store the completed upload (the directory will be created if it doesn't already exist).
The validator validates the uploaded file. If it returns false, it cancels the upload. Otherwise, it continues running.

To create the routes needed for a resumable upload, you can use the Route::resumable() method.

Route::resumable("/upload", "UploadController@upload");

You could also do this manually.

Route::get("/upload", "UploadController@upload");
Route::post("/upload", "UploadController@upload");

All you need to do is type-hint the resumable request on your controller method. This will setup up the resumable upload:

public function upload(SomeUpload $upload)
{
    $upload->process();

    if ($upload->isComplete()) {
        // File uploaded, do something with file
        // $upload->getFilename(true); filename with extension
        // $upload->getFilepath(); full filepath
    }

    return $upload->respond();
}