function toArray(obj) {
	  var length = obj.length;

	  // Some browsers builtin objects can report typeof 'function' (e.g. NodeList
	  // in old versions of Safari).
	  !(!Array.isArray(obj) && (typeof obj === 'object' || typeof obj === 'function')) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Array-like object expected') : invariant(false) : void 0;

	  !(typeof length === 'number') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Object needs a length property') : invariant(false) : void 0;

	  !(length === 0 || length - 1 in obj) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Object should have keys for indices') : invariant(false) : void 0;

	  !(typeof obj.callee !== 'function') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Object can\'t be `arguments`. Use rest params ' + '(function(...args) {}) or Array.from() instead.') : invariant(false) : void 0;

	  // Old IE doesn't give collections access to hasOwnProperty. Assume inputs
	  // without method will throw during the slice call and skip straight to the
	  // fallback.
	  if (obj.hasOwnProperty) {
	    try {
	      return Array.prototype.slice.call(obj);
	    } catch (e) {
	      // IE < 9 does not support Array#slice on collections objects
	    }
	  }

	  // Fall back to copying key by key. This assumes all keys have a value,
	  // so will not preserve sparsely populated inputs.
	  var ret = Array(length);
	  for (var ii = 0; ii < length; ii++) {
	    ret[ii] = obj[ii];
	  }
	  return ret;
	}
Convert array-like objects to arrays.

This API assumes the caller knows the contents of the data type. For less
well defined inputs use createArrayFromMixed.

@param {object|function|filelist} obj
@return {array}