atom.js
function () {
				var keys = [];
				for (var key in props) {
					if (hasOwn.call(props, key)) {
						keys.push(key);
					}
				}
				return keys;
			}
function () {
				var keys = [];
				for (var key in props) {
					if (hasOwn.call(props, key)) {
						keys.push(key);
					}
				}
				return keys;
			}
function ( ) { var keys = [ ] ; for ( var key in props ) { if ( hasOwn . call ( props , key ) ) { keys . push ( key ) ; } } return keys ; }
Return a list of all keys.
Return a list of all keys .