text: import "../selection/each";
  import "transition";
  
  d3_transitionPrototype.delay = function(value) {
    var id = this.id;
    if (arguments.length < 1) return this.node().__transition__[id].delay;
    return d3_selection_each(this, typeof value === "function"
        ? function(node, i, j) { node.__transition__[id].delay = +value.call(node, node.__data__, i, j); }
        : (value = +value, function(node) { node.__transition__[id].delay = value; }));
  };
  