///
///
module Rx {
export interface Observable {
/**
* Matches when the observable sequence has an available value and projects the value.
*
* @param {Function} selector Selector that will be invoked for values in the source sequence.
* @returns {Plan} Plan that produces the projected values, to be fed (with other plans) to the when operator.
*/
thenDo(selector: (item1: T) => TR): Plan
;
}
}