24 lines
749 B
TypeScript
24 lines
749 B
TypeScript
import { utcToZonedTime, zonedTimeToUtc } from "date-fns-tz";
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export const TERMS = ["winter", "spring", "fall"] as const;
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export type Term = typeof TERMS[number];
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export const DATE_FORMAT = "MMMM dd yyyy HH:mm";
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// https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates
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export function isTerm(x: string): x is Term {
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return TERMS.some((term) => x === term);
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}
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export function capitalize(str: string) {
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return str.slice(0, 1).toUpperCase() + str.slice(1);
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}
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// Converts a date to local time
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export function getLocalDateFromEST(date: Date): Date {
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return utcToZonedTime(
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// The date parameter is in EST
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zonedTimeToUtc(date, "America/Toronto"),
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Intl.DateTimeFormat().resolvedOptions().timeZone
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);
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}
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