old_contents: var fs = require('fs');
  var parallelStream = require('pelias-parallel-stream');
  
  var maxInFlight = 10;
  
  module.exports.create = function create_json_parse_stream(dataDirectory) {
    return parallelStream(maxInFlight, function(record, enc, next) {
      fs.readFile(dataDirectory + record.path, function(err, data) {
        if (err) {
          console.error('exception reading file ' + record.path);
          next(err);
        } else {
          try {
            var object = JSON.parse(data);
            next(null, object);
          } catch (parse_err) {
            console.error('exception on %s:', record.path, parse_err);
            console.error('Inability to parse JSON usually means that WOF has been cloned ' +
                          'without using git-lfs, please see instructions here: ' +
                          'https://github.com/whosonfirst/whosonfirst-data#git-and-large-files');
            next(parse_err);
          }
        }
      });
    });
  };
  
new_contents: var fs = require('fs');
  var parallelStream = require('pelias-parallel-stream');
  
  var maxInFlight = 10;
  
  module.exports.create = function create_json_parse_stream(dataDirectory) {
    return parallelStream(maxInFlight, function(record, enc, next) {
      fs.readFile(dataDirectory + record.path, function(err, data) {
        if (err) {
          console.error('exception reading file ' + record.path);
          next(err);
        } else {
          try {
            var object = JSON.parse(data);
            next(null, object);
          } catch (parse_err) {
            console.error('exception parsing JSON in file %s:', record.path, parse_err);
            console.error('Inability to parse JSON usually means that WOF has been cloned ' +
                          'without using git-lfs, please see instructions here: ' +
                          'https://github.com/whosonfirst/whosonfirst-data#git-and-large-files');
            next(parse_err);
          }
        }
      });
    });
  };
  
subject: Improve JSON parsing error message