export function getArray(obj: any, path: string): any {
    if (path === '' || path === '.') {
        return obj;
    }
    switch (typeof obj) {
        case 'object': {
            if (obj === null) {
                return obj;
            }
            const steps = path.split('.');
            const subPath = steps.slice(1).join('.');
            if (steps[0] === '*') {
                if (Array.isArray(obj)) {
                    return obj.map((el) => getArray(el, subPath));
                } else {
                    return undefined;
                }
            } else {
                if (Array.isArray(obj)) {
                    const index = Number(steps[0]);
                    if (isNaN(index)) {
                        return undefined;
                    }
                    return getArray(obj[index], subPath);
                } else {
                    return getArray(obj[steps[0]], subPath);
                }
            }
        }
        default: {
            return undefined;
        }
    }
}