node-reiwa

今年は令和何年ですか？

What year of Reiwa is this?

install

% npm install node-reiwa

example

const reiwa = require('node-reiwa')
console.log(reiwa(new Date('2019-05-01')))
// 1

console.log(reiwa(new Date('2019-04-01')))
// null