ngx-stateful/dist/index.js

Be obnoxiously clear about which of your Angular components own state

"use strict";
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.StatefulComponent = void 0;
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
var StatefulComponent = /** @class */ (function () {
    function StatefulComponent(_state) {
        this._state = new rxjs_1.BehaviorSubject(null);
        this.state$ = this._state.asObservable();
        this.setState(_state);
    }
    Object.defineProperty(StatefulComponent.prototype, "state", {
        get: function () {
            return this._state.value;
        },
        enumerable: false,
        configurable: true
    });
    StatefulComponent.prototype.select = function (selector) {
        return this.state$.pipe(operators_1.map(selector), operators_1.distinctUntilChanged());
    };
    StatefulComponent.prototype.selectKey = function (key) {
        return this.select(function (state) { return state[key]; });
    };
    StatefulComponent.prototype.onChange = function (selector) {
        return this.select(selector).pipe(operators_1.pairwise());
    };
    StatefulComponent.prototype.onKeyChange = function (key) {
        return this.onChange(function (state) { return state[key]; });
    };
    StatefulComponent.prototype.setState = function (state) {
        this._state.next(typeof state === 'function' ?
            state(this._state.value) :
            (__assign(__assign({}, this._state.value), state)));
    };
    return StatefulComponent;
}());
exports.StatefulComponent = StatefulComponent;