borisyankov/DefinitelyTyped — pull request #2586 by bomiller (2014-07-30 03:55:23+00:00)
Title:  Underscore.js: Fix for chained calls to first()

Updated chained calls to first() so that they return a _ChainSingle instead of _Chain. This causes a future call to value() to return a single T rather than an array of T which matches underscore's behavior.