bbo/truncate.js

bbo is a utility library of zero dependencies for javascript.

'use strict';

require('./get_tag.js');
require('./is_array.js');
require('./is_string.js');
require('./is_map.js');
require('./is_set.js');
var size = require('./size.js');

/**
 * Truncates a string up to a specified length.
 * The default length is 3, and the truncated symbol defaults '...'
 */

var truncate = function (str) {
  var num = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 3;
  var len = size(str);
  return len > num ? str.slice(0, num > 3 ? num - 3 : num) + '...' : str;
};

module.exports = truncate;