LICENSE.test.js

import { AssertionError } from 'node:assert'
import { fileURLToPath }  from 'url'
import path               from 'path'
import { readFile }       from 'fs/promises'

const __filename = fileURLToPath(import.meta.url)
const __dirname  = path.dirname(__filename)
const yearRegExp = /2013\u2013(?<year>\d{4})/u

describe(`LICENSE`, function() {

  it(`has the correct year`, async function() {

    const licensePath = path.join(__dirname, `./LICENSE.md`)
    const text        = await readFile(licensePath, `utf8`)
    const { year }    = yearRegExp.exec(text).groups
    const currentYear = new Date().getFullYear().toString()

    if (year !== currentYear) {
      throw new AssertionError({
        actual:   currentYear,
        expected: year,
        message:  `Incorrect year in license.`,
        operator: `=`,
      })
    }

  })

})