semver

format.js

const formatDateToUTC = date => {
  const month = `${date.getUTCMonth() + 1}`;
  const day = `${date.getUTCDate()}`;
  const hour = `${date.getUTCHours()}`;
  const min = `${date.getUTCMinutes()}`;
  const year = `${date.getFullYear()}`;

  const list = [year, month, day, hour, min];
  return list
    .map(v => {
      if (v.length === 1) {
        return `0${v}`;
      }
      return v;
    })
    .join('');
};

module.exports = formatDateToUTC;

sample.js

const semver = require('semver');
const formatDateToUTC = require('./utils/format_date_to_utc');

const hoge = current => semver.inc(current, 'minor');
const nextMinorVersion = current => semver.inc(current, 'minor');
const nextPatchVersion = current => semver.inc(current, 'patch');

// console.log('====== v', hoge('0.0.100'), nextMinorVersion('0.0.100'), nextPatchVersion('0.1.100'));

// console.log('====', date.getUTCDate(), date.getUTCMonth() + 1, format(date));

const nextScheduledVersion = current =>
  semver.inc(current, 'prepatch', formatDateToUTC(new Date()));

console.log(
  '====',
  nextScheduledVersion('0.5.0'),
  nextScheduledVersion('0.5.1-201905091829.0'),
  nextPatchVersion('0.5.1-201905091829.0'),
  nextMinorVersion('0.5.1-201905091829.0'),
);