import _objectIs from "./internal/_objectIs.js"; /** * Returns true if its arguments are identical, false otherwise. Values are * identical if they reference the same memory. `NaN` is identical to `NaN`; * `0` and `-0` are not identical. * * Note this is merely a curried version of ES6 `Object.is`. * * `identical` does not support the `__` placeholder. * * @func * @memberOf R * @since v0.15.0 * @category Relation * @sig a -> a -> Boolean * @param {*} a * @param {*} b * @return {Boolean} * @example * * const o = {}; * R.identical(o, o); //=> true * R.identical(1, 1); //=> true * R.identical(1, '1'); //=> false * R.identical([], []); //=> false * R.identical(0, -0); //=> false * R.identical(NaN, NaN); //=> true */ var identical = function (a, b) { switch (arguments.length) { case 0: return identical; case 1: return function () { return function unaryIdentical(_b) { switch (arguments.length) { case 0: return unaryIdentical; default: return _objectIs(a, _b); } }; }(); default: return _objectIs(a, b); } }; // In order to support Cross-origin Window objects as arguments to identical, // it cannot be implemented as _curry2(_objectIs). // The reason is that _curry2 checks if a function argument is the placeholder __ // by accessing a paritcular property. However, across URL origins access // to most properties of Window is forbidden. export default identical;