/**
 * Group: ES6 shims
 * Target Browsers: `IE11`
 * Object.is support
 * Blatantly stolen from ES6 specs. Kept here for reference.
 * http://wiki.ecmascript.org/doku.php?id=harmony:egal
 */ if ( ! Object . is ) { Object . defineProperty ( Object , 'is' , { value ( x , y ) { return ( x === y ) ? ( x !== 0 || 1 / x === 1 / y ) : ( x !== x && y !== y ) ; } , enumerable : false } ) ; }