54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
|
var _curry1 =
|
||
|
/*#__PURE__*/
|
||
|
require("./internal/_curry1");
|
||
|
|
||
|
var _isArguments =
|
||
|
/*#__PURE__*/
|
||
|
require("./internal/_isArguments");
|
||
|
|
||
|
var _isArray =
|
||
|
/*#__PURE__*/
|
||
|
require("./internal/_isArray");
|
||
|
|
||
|
var _isObject =
|
||
|
/*#__PURE__*/
|
||
|
require("./internal/_isObject");
|
||
|
|
||
|
var _isString =
|
||
|
/*#__PURE__*/
|
||
|
require("./internal/_isString");
|
||
|
/**
|
||
|
* Returns the empty value of its argument's type. Ramda defines the empty
|
||
|
* value of Array (`[]`), Object (`{}`), String (`''`), and Arguments. Other
|
||
|
* types are supported if they define `<Type>.empty`,
|
||
|
* `<Type>.prototype.empty` or implement the
|
||
|
* [FantasyLand Monoid spec](https://github.com/fantasyland/fantasy-land#monoid).
|
||
|
*
|
||
|
* Dispatches to the `empty` method of the first argument, if present.
|
||
|
*
|
||
|
* @func
|
||
|
* @memberOf R
|
||
|
* @since v0.3.0
|
||
|
* @category Function
|
||
|
* @sig a -> a
|
||
|
* @param {*} x
|
||
|
* @return {*}
|
||
|
* @example
|
||
|
*
|
||
|
* R.empty(Just(42)); //=> Nothing()
|
||
|
* R.empty([1, 2, 3]); //=> []
|
||
|
* R.empty('unicorns'); //=> ''
|
||
|
* R.empty({x: 1, y: 2}); //=> {}
|
||
|
*/
|
||
|
|
||
|
|
||
|
var empty =
|
||
|
/*#__PURE__*/
|
||
|
_curry1(function empty(x) {
|
||
|
return x != null && typeof x['fantasy-land/empty'] === 'function' ? x['fantasy-land/empty']() : x != null && x.constructor != null && typeof x.constructor['fantasy-land/empty'] === 'function' ? x.constructor['fantasy-land/empty']() : x != null && typeof x.empty === 'function' ? x.empty() : x != null && x.constructor != null && typeof x.constructor.empty === 'function' ? x.constructor.empty() : _isArray(x) ? [] : _isString(x) ? '' : _isObject(x) ? {} : _isArguments(x) ? function () {
|
||
|
return arguments;
|
||
|
}() : void 0 // else
|
||
|
;
|
||
|
});
|
||
|
|
||
|
module.exports = empty;
|