27 lines
892 B
TypeScript
27 lines
892 B
TypeScript
export function isValidIso(iso: string): boolean {
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if (!/^\d{4}-\d{2}-\d{2}$/.test(iso)) return false
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const [y, m, d] = iso.split('-').map(Number)
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const date = new Date(y, m - 1, d)
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return date.getFullYear() === y && date.getMonth() === m - 1 && date.getDate() === d
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}
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export function formatIsoToDisplay(iso: string | null): string {
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if (!iso || !isValidIso(iso)) return ''
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const [y, m, d] = iso.split('-')
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return `${d}/${m}/${y}`
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}
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export function parseDisplayToIso(display: string): string | null {
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const match = /^(\d{2})\/(\d{2})\/(\d{4})$/.exec(display.trim())
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if (!match) return null
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const [, dd, mm, yyyy] = match
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const iso = `${yyyy}-${mm}-${dd}`
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return isValidIso(iso) ? iso : null
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}
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export function isDateInRange(iso: string, min?: string, max?: string): boolean {
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if (min && iso < min) return false
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if (max && iso > max) return false
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return true
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}
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