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var re = require('gfm-code-block-regex')()

function gfm (str) {
  var arr = []
  var match = null

  while (match = re.exec(str)) { // eslint-disable-line no-cond-assign
    arr.push({
      start: match.index,
      end: match.index + match[1].length,
      lang: match[3],
      code: match[5],
      block: match[1]
    })
  }
  return arr
}
gfm('abc\n```bash\nbar\n```\nxyz')
//=> [ { start: 4,
//    end: 19,
//    lang: 'bash',
//    code: 'bar',
//    block: '```bash\nbar\n```' } ]