ProcessWire Valet Driver

ProcessWireValetDriver.php

<?php

class ProcessWireValetDriver extends BasicValetDriver
{
    private $possibleDirectories = [
        '', // PW in root, do not remove except you're sure you never use it
        '/dist',
        '/public'
    ];

    /**
     * Determine if the driver serves the request.
     *
     * @param  string  $sitePath
     * @param  string  $siteName
     * @param  string  $uri
     * @return bool
     */
    public function serves($sitePath, $siteName, $uri)
    {
        foreach ($this->possibleDirectories as $dir) {
            if(is_dir("{$sitePath}{$dir}/wire"))
                return true;
        }
        return false;
    }

    public function isStaticFile($sitePath, $siteName, $uri)
    {
        foreach ($this->possibleDirectories as $dir) {
            if(is_file($staticFilePath = "{$sitePath}{$dir}{$uri}"))
                return $staticFilePath;
        }
        return false;
    }

    /**
     * Get the fully resolved path to the application's front controller.
     *
     * @param  string  $sitePath
     * @param  string  $siteName
     * @param  string  $uri
     * @return string
     */
    public function frontControllerPath($sitePath, $siteName, $uri)
    {
        $_SERVER['SERVER_NAME']     = $_SERVER['HTTP_HOST'];
        $_SERVER['SCRIPT_NAME']     = '/index.php';
        $_GET['it']                 = $uri;

        if ($uri === '') {
            $uri = '/';
        }

        foreach ($this->possibleDirectories as $dir) {
            if(!file_exists($indexPath = "{$sitePath}{$dir}/index.php")) continue;

            $_SERVER['REQUEST_URI'] = substr(str_replace($dir, '', $_SERVER['REQUEST_URI']), 10);
            $_SERVER['SCRIPT_FILENAME'] = $indexPath;


            if (file_exists($indexPath = "{$sitePath}{$dir}/install.php")) {
                return $indexPath;
            }

            return parent::frontControllerPath(
                "{$sitePath}{$dir}", $siteName, $uri
            );
        }
    }
}

Iirc the str_replace() is mostly for the support of subfolders within the valet project root, while the substr(…, 10) is to remove the trailing /index.php from the REQUEST_URI.