20 lines
575 B
JavaScript
20 lines
575 B
JavaScript
import { splitDate } from './splitDate.js';
|
|
import { pad } from './pad.js';
|
|
|
|
/**
|
|
* To add a leading zero to a single number
|
|
*
|
|
* @param {string} dateString
|
|
* @returns {string}
|
|
*/
|
|
export function addLeadingZero(dateString) {
|
|
const dateParts = splitDate(dateString);
|
|
const delimiter = dateParts ? dateParts[2] : '';
|
|
const dateArray =
|
|
dateString.split && dateString.split(delimiter).filter(str => str.trim().length > 0);
|
|
if (!dateArray || dateArray.length !== 3) {
|
|
// prevent fail on invalid dates
|
|
return '';
|
|
}
|
|
return dateArray.map(pad).join('-');
|
|
}
|