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"use strict";
exports.__esModule = true;
exports.default = exports.ObservableSet = void 0;
var _useForceUpdate = _interopRequireDefault(require("./useForceUpdate"));
var _useStableMemo = _interopRequireDefault(require("./useStableMemo"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
class ObservableSet extends Set {
constructor(listener, init) {
super(init);
this.listener = listener;
}
add(value) {
super.add(value);
// When initializing the Set, the base Set calls this.add() before the
// listener is assigned so it will be undefined
if (this.listener) this.listener(this);
return this;
}
delete(value) {
const result = super.delete(value);
this.listener(this);
return result;
}
clear() {
super.clear();
this.listener(this);
}
}
/**
* Create and return a [Set](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) that triggers rerenders when it's updated.
*
* ```ts
* const ids = useSet<number>([1,2,3,4]);
*
* return (
* <>
* {Array.from(ids, id => (
* <div>
* id: {id}. <button onClick={() => ids.delete(id)}>X</button>
* </div>
* )}
* </>
* )
* ```
*
* @param init initial Set values
*/
exports.ObservableSet = ObservableSet;
function useSet(init) {
const forceUpdate = (0, _useForceUpdate.default)();
return (0, _useStableMemo.default)(() => new ObservableSet(forceUpdate, init), []);
}
var _default = useSet;
exports.default = _default;