Function parseDuration

tests/eventsource.js:689–695

(value, def)

  var MAXIMUM_DURATION = 18000000;

  var parseDuration = function (value, def) {
    var n = value == null ? def : parseInt(value, 10);
    if (n !== n) {
      n = def;
    }
    return clampDuration(n);
  };
  var clampDuration = function (n) {
    return Math.min(Math.max(n, MINIMUM_DURATION), MAXIMUM_DURATION);
  };