Livewire 3 Upgrade check — check upgrade blockers free

Finds Livewire 2 APIs that silently die in Livewire 3 — emit(), wire:model.defer, dispatchBrowserEvent, livewire:load, missing :key — in your .php and .blade.php files. Runs entirely in your browser — nothing is uploaded.

<?php

namespace App\Http\Livewire;

use Livewire\Component;

class InvoiceRows extends Component
{
    public string $search = '';

protected $queryString = ['search'];

public function save(): void
    {
        $this->emit('invoiceSaved', $this->search);
        $this->emitTo('billing.totals', 'refresh');
        $this->emitUp('rowChanged');
        $this->dispatchBrowserEvent('notify', ['body' => 'Saved']);
    }

public function render()
    {
        return <<<'HTML'
        <div>
            @livewireStyles
            <input type="search" wire:model.defer="search">
            <input type="text" wire:model.lazy="note">
            <input type="text" wire:model.debounce.400ms="filter">
            <button wire:click.prefetch="save">Save</button>

@foreach ($this->rows as $row)
                <livewire:invoice-row :row="$row" />
            @endforeach

as of

Free here: Scan the Livewire file you have open and get every Livewire 3 blocker with the exact v3 replacement, line by line.. In the editor: Scan every .php and .blade.php in the workspace at once and export an owned REPORT.md / JSON with file:line for the whole migration, plus a CI exit code. — that part asks for a licence key.

Same engine as the VS Code extension, byte for byte.