@chezearth/string/lib/_splitLeft.js

This is a temporary package until I can open a pull request on the original. string contains methods that aren't included in the vanilla JavaScript string such as escaping html, decoding html entities, stripping tags, etc.

function splitLeft(self, sep, maxSplit, limit) {

  if (typeof maxSplit === 'undefined') {
    var maxSplit = -1;
  }

  var splitResult = self.split(sep);
  var splitPart1 = splitResult.slice(0, maxSplit);
  var splitPart2 = splitResult.slice(maxSplit);

  if (splitPart2.length === 0) {
    splitResult = splitPart1;
  } else {
    splitResult = splitPart1.concat(splitPart2.join(sep));
  }

  if (typeof limit === 'undefined') {
    return splitResult;
  } else if (limit < 0) {
    return splitResult.slice(limit);
  } else {
    return splitResult.slice(0, limit);
  }

}

module.exports = splitLeft;