rxdeep
Version:
RxJS deep state management
42 lines • 1.99 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.persistent = exports.PersistentState = void 0;
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
var state_1 = require("./state");
var PersistentState = /** @class */ (function (_super) {
__extends(PersistentState, _super);
function PersistentState(state, storage, transform) {
var _this = _super.call(this, state.value, rxjs_1.merge(state.downstream, state.downstream.pipe(operators_1.filter(function (change) { return _this._received !== change.value; }), transform || (function (_) { return _; }), operators_1.tap(function (change) {
_this._received = change.value;
storage.save(change.value);
}), operators_1.filter(function () { return false; })), storage.load().pipe(operators_1.tap(function (value) {
_this._received = value;
_this.next(value);
}), operators_1.filter(function () { return false; }))), state.upstream) || this;
_this.state = state;
_this.storage = storage;
_this.transform = transform;
return _this;
}
return PersistentState;
}(state_1.State));
exports.PersistentState = PersistentState;
function persistent(state, storage) {
return new PersistentState(state, storage);
}
exports.persistent = persistent;
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