fission-suite/webnative

// TYPES


export type SemVer = {
  major: number
  minor: number
  patch: number
}



// FUNCTIONS


export const encode = (major: number, minor: number, patch: number): SemVer => {
  return {
    major,
    minor,
    patch
  }
}

export const fromString = (str: string): SemVer | null => {
  const parts = str.split(".").map(x => parseInt(x)) // dont shorten this because parseInt has a second param
  if (parts.length !== 3 || parts.some(p => typeof p !== "number")) {
    return null
  }
  return {
    major: parts[ 0 ],
    minor: parts[ 1 ],
    patch: parts[ 2 ]
  }
}

export const toString = (version: SemVer): string => {
  const { major, minor, patch } = version
  return `${major}.${minor}.${patch}`
}

export const equals = (a: SemVer, b: SemVer): boolean => {
  return a.major === b.major
    && a.minor === b.minor
    && a.patch === b.patch
}

export const isSmallerThan = (a: SemVer, b: SemVer): boolean => {
  if (a.major != b.major) return a.major < b.major
  if (a.minor != b.minor) return a.minor < b.minor
  return a.patch < b.patch
}

export const isBiggerThan = (a: SemVer, b: SemVer): boolean => {
  return isSmallerThan(b, a)
}

export function isBiggerThanOrEqualTo(a: SemVer, b: SemVer): boolean {
  return isSmallerThan(b, a) || equals(a, b)
}