type versionArr = number[]; export const checkVersionIsLow = (cur: versionArr, old: versionArr) => { if (cur[0] < old[0]) { return false; } else if (cur[0] > old[0]) { return true; } if (cur[1] < old[1]) { return false; } else if (cur[1] > old[1]) { return true; } if (cur[2] <= old[2]) { return false; } return true; };