Improve regexp performance

[github/Chocobozzz/PeerTube.git] / shared / core-utils / common / miscs.ts

// high excluded
function randomInt (low: number, high: number) {
  return Math.floor(Math.random() * (high - low) + low)
}

// Thanks https://stackoverflow.com/a/16187766
function compareSemVer (a: string, b: string) {
  const regExStrip0 = /(\.0+)+$/
  const segmentsA = a.replace(regExStrip0, '').split('.')
  const segmentsB = b.replace(regExStrip0, '').split('.')

  const l = Math.min(segmentsA.length, segmentsB.length)

  for (let i = 0; i < l; i++) {
    const diff = parseInt(segmentsA[i], 10) - parseInt(segmentsB[i], 10)

    if (diff) return diff
  }

  return segmentsA.length - segmentsB.length
}

function sortObjectComparator (key: string, order: 'asc' | 'desc') {
  return (a: any, b: any) => {
    if (a[key] < b[key]) {
      return order === 'asc' ? -1 : 1
    }

    if (a[key] > b[key]) {
      return order === 'asc' ? 1 : -1
    }

    return 0
  }
}

export {
  randomInt,
  compareSemVer,
  sortObjectComparator
}