const spaceReg = /\s+/;
const commaReg = /,/g;

export default function (lengthList) {
    if (typeof lengthList === 'string') {
        return lengthList.trim().replace(commaReg, ' ').split(spaceReg);
    } else if (typeof lengthList === 'number') {
        return [`${lengthList}`];
    } else if (lengthList && typeof lengthList.map === 'function') {
        return lengthList.map(d => `${d}`);
    } else {
        return [];
    }
}