Method sizeOf

lib/bundle-validator.js:119–121

* Wrapper to enable testability. * @param imagePath * @param callback

(imagePath, callback)

     * @param callback
     */
    sizeOf(imagePath, callback) {
        return sizeOf(imagePath, callback);
    }

    /**
     * If theme schema exists we need to validate it to make sure it passes all defined checks.