micro-mdx-parser/src/utils/find-inline-arrow-fn.js

A tiny parser to convert markdown or html into JSON

const OPEN_BRACKET = '◖'
const OPEN_BRACKET_PATTERN = /◖/g
const CLOSE_BRACKET = '◗'
const CLOSE_BRACKET_PATTERN = /◗/g

const ARROW_FN_REGEX = /([{ ])(?:async\s+)?\s?\(.*\)\s?=>\s?\{(?:(?:[^}{]+|\{(?:[^}{]+|\{[^}{]*\})*\})*\}(?:\s?\(.*\)\s?\)\s?)?)?(?:\;)?/gim

function findArrowFns(block) {

  let matches
  const fns = []
  while ((matches = ARROW_FN_REGEX.exec(block)) !== null) {
    if (matches.index === ARROW_FN_REGEX.lastIndex) {
      ARROW_FN_REGEX.lastIndex++ // avoid infinite loops with zero-width matches
    }
    // console.log('matches', matches)
    const [ _match, openChar ] = matches
    fns.push(_match.replace((openChar || ''), ''))
  }
  // console.log(fns.length)
  return fns
}

module.exports = {
  findArrowFns,
  OPEN_BRACKET,
  OPEN_BRACKET_PATTERN,
  CLOSE_BRACKET,
  CLOSE_BRACKET_PATTERN,
}