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@burglekitt/gmt

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Temporal-based date and time utilities with timezone support and polyfill integration

github.com/burglekitt/gmt

burglekitt/gmt

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/** * Return the last day of the quarter for a given ISO date. * * - Returns the last day of the quarter containing the input date. * - Q1 ends on "03-31", Q2 ends on "06-30", Q3 ends on "09-30", Q4 ends on "12-31". * - Validates input using isValidDate. * * @param value ISO PlainDate string * @returns ISO PlainDate string for the last day of the quarter, or "" on invalid input * * @example endOfQuarterForDate("2024-03-15") // "2024-03-31" * @example endOfQuarterForDate("2024-06-15") // "2024-06-30" * @example endOfQuarterForDate("2024-09-15") // "2024-09-30" * @example endOfQuarterForDate("2024-12-15") // "2024-12-31" * @example endOfQuarterForDate("invalid") // "" */ export declare function endOfQuarterForDate(value: string): string;