47 lines
1.5 KiB
TypeScript
47 lines
1.5 KiB
TypeScript
const DT_SEPARATOR = /t|\s/i
|
|
const DATE = /^(\d\d\d\d)-(\d\d)-(\d\d)$/
|
|
const TIME = /^(\d\d):(\d\d):(\d\d)(?:\.\d+)?(?:z|([+-]\d\d)(?::?(\d\d))?)$/i
|
|
const DAYS = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
|
|
|
|
export default function validTimestamp(str: string, allowDate: boolean): boolean {
|
|
// http://tools.ietf.org/html/rfc3339#section-5.6
|
|
const dt: string[] = str.split(DT_SEPARATOR)
|
|
return (
|
|
(dt.length === 2 && validDate(dt[0]) && validTime(dt[1])) ||
|
|
(allowDate && dt.length === 1 && validDate(dt[0]))
|
|
)
|
|
}
|
|
|
|
function validDate(str: string): boolean {
|
|
const matches: string[] | null = DATE.exec(str)
|
|
if (!matches) return false
|
|
const y: number = +matches[1]
|
|
const m: number = +matches[2]
|
|
const d: number = +matches[3]
|
|
return (
|
|
m >= 1 &&
|
|
m <= 12 &&
|
|
d >= 1 &&
|
|
(d <= DAYS[m] ||
|
|
// leap year: https://tools.ietf.org/html/rfc3339#appendix-C
|
|
(m === 2 && d === 29 && (y % 100 === 0 ? y % 400 === 0 : y % 4 === 0)))
|
|
)
|
|
}
|
|
|
|
function validTime(str: string): boolean {
|
|
const matches: string[] | null = TIME.exec(str)
|
|
if (!matches) return false
|
|
const hr: number = +matches[1]
|
|
const min: number = +matches[2]
|
|
const sec: number = +matches[3]
|
|
const tzH: number = +(matches[4] || 0)
|
|
const tzM: number = +(matches[5] || 0)
|
|
return (
|
|
(hr <= 23 && min <= 59 && sec <= 59) ||
|
|
// leap second
|
|
(hr - tzH === 23 && min - tzM === 59 && sec === 60)
|
|
)
|
|
}
|
|
|
|
validTimestamp.code = 'require("ajv/dist/runtime/timestamp").default'
|