parseEraYear関数

The era year a text names, or null when it does not name one.

元年, "first year", is spelled out rather than numbered on anything official, so it is read as the 1 it means. Everything else is a plain number, half-width or full, with or without the 年 that usually follows it. Latin names may be spelled with a long-vowel macron (Shōwa) or without.

import { parseEraYear } from "@johnmorrisdotca/hikidashi/wareki";

function parseEraYear(raw: string): EraYear | null

import { parseEraYear } from "@johnmorrisdotca/hikidashi/wareki";

console.log(parseEraYear("令和6年")?.westernYear);
console.log(parseEraYear("Heisei 3")?.westernYear, parseEraYear("昭和元年")?.westernYear);
console.log(parseEraYear("昭和65年"), parseEraYear("令和"));

2024
1991 1926
null null