import { createRegExp, exactly, oneOrMore, digit, char } from 'magic-regexp'
createRegExp(
  oneOrMore(digit)
    .groupedAs('major')
    .and('.')
    .and(oneOrMore(digit).groupedAs('minor'))
    .and(exactly('.').and(oneOrMore(char).groupedAs('patch')).optionally())
)
// /(?<major>\d+)\.(?<minor>\d+)(?:\.(?<patch>.+))?/

import assert from 'node:assert'
import { createRegExp, wordChar, char, oneOrMore } from 'magic-regexp'
const TENET_RE = createRegExp(
  wordChar
    .groupedAs('firstChar')
    .and(wordChar.groupedAs('secondChar'))
    .and(oneOrMore(char))
    .and.referenceTo('secondChar')
    .and.referenceTo('firstChar')
)
// /(?<firstChar>\w)(?<secondChar>\w).+\k<secondChar>\k<firstChar>/
assert.equal(TENET_RE.test('TEN<==O==>NET'), true)