assetsmanifest-plugin/classes/ManifestReader.php

<?php namespace Wpstudio\AssetsManifest\Classes;

class ManifestReader
{
    private $manifest = null;

    /**
     * @param string $manifestPath
     * @throws AssetsManifestException
     */
    public function __construct(string $manifestPath)
    {
        if (!file_exists($manifestPath)) {
            throw new AssetsManifestException('Not found: ' . $manifestPath);
        }

        if (!is_readable($manifestPath)) {
            throw new AssetsManifestException('Not readable: ' . $manifestPath);
        }

        $this->manifest = json_decode(file_get_contents($manifestPath));
    }

    public function get(string $assetName)
    {
        return $this->manifest->$assetName;
    }
}