Array iterators and async

gistfile1.txt

var readPDFText = function (documentObject, options, cb) {
  if (!documentObject) throw new Error('No pdf provided')

  // For each page
  async.map(
    pdfjs.getDocument(documentObject).then(function (pdf) {
      // Get all of the apges
      async.times(pdf.numPages, function (pageNum, callback) {
        pdf.getPage(pageNum + 1).then(function (page) {
          // Get all of the strings on the page 
          page.getTextContent().then(function (textContent) {
            // Check for DOIS
            async.map(textContent.items, function (item, itemcb) {
              // TODO match[2] tracks .t001, .g001, etc. Capture these, they may be relevant
              // to research.
              var match = doiRegex.groups(item.str)

              if (match) {
                itemcb(null, match)
                // console.log('match', match)
                // callback(null, match[1])
                // if (options.modules.altmetrics) {
                //   altmetricsFromDoi(doi, cb)
                // }
              } else {
                itemcb(null)
              }
            }, function (err, result) {
              if (err) {
                callback(err)
              }

              callback(null, result)
            })
            //   cb('Failed to find a DOI.')
          })
        })
      }, function (err, results) {
        if (err) {
          cb('Error getting DOIs')
        }

        console.log('results', results)
        // cb(null, results)
      })
    })
  , function (arrayItem, mapIteratorCallback) {
    mapIteratorCallback('Hi mom!')
  }, function (err, finalResult) {
    if (err) { console.log('err', err)}
    console.log('hello')
  })
}