From 9384f5399da39e53855beb8e7f8ded1aa56bf72e Mon Sep 17 00:00:00 2001 From: syuilo Date: Tue, 27 Dec 2022 14:36:33 +0900 Subject: rename: client -> frontend --- packages/frontend/src/scripts/time.ts | 39 +++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 packages/frontend/src/scripts/time.ts (limited to 'packages/frontend/src/scripts/time.ts') diff --git a/packages/frontend/src/scripts/time.ts b/packages/frontend/src/scripts/time.ts new file mode 100644 index 0000000000..34e8b6b17c --- /dev/null +++ b/packages/frontend/src/scripts/time.ts @@ -0,0 +1,39 @@ +const dateTimeIntervals = { + 'day': 86400000, + 'hour': 3600000, + 'ms': 1, +}; + +export function dateUTC(time: number[]): Date { + const d = time.length === 2 ? Date.UTC(time[0], time[1]) + : time.length === 3 ? Date.UTC(time[0], time[1], time[2]) + : time.length === 4 ? Date.UTC(time[0], time[1], time[2], time[3]) + : time.length === 5 ? Date.UTC(time[0], time[1], time[2], time[3], time[4]) + : time.length === 6 ? Date.UTC(time[0], time[1], time[2], time[3], time[4], time[5]) + : time.length === 7 ? Date.UTC(time[0], time[1], time[2], time[3], time[4], time[5], time[6]) + : null; + + if (!d) throw 'wrong number of arguments'; + + return new Date(d); +} + +export function isTimeSame(a: Date, b: Date): boolean { + return a.getTime() === b.getTime(); +} + +export function isTimeBefore(a: Date, b: Date): boolean { + return (a.getTime() - b.getTime()) < 0; +} + +export function isTimeAfter(a: Date, b: Date): boolean { + return (a.getTime() - b.getTime()) > 0; +} + +export function addTime(x: Date, value: number, span: keyof typeof dateTimeIntervals = 'ms'): Date { + return new Date(x.getTime() + (value * dateTimeIntervals[span])); +} + +export function subtractTime(x: Date, value: number, span: keyof typeof dateTimeIntervals = 'ms'): Date { + return new Date(x.getTime() - (value * dateTimeIntervals[span])); +} -- cgit v1.2.3-freya