mobx-fetch-observable/lib/src/fetch-observable.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FetchObservable = void 0;
var mobx_1 = require("mobx");
var FetchObservable = /** @class */ (function () {
    function FetchObservable(initialFetch) {
        if (initialFetch === void 0) { initialFetch = undefined; }
        Object.defineProperty(this, "_started", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        Object.defineProperty(this, "_fetch", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        Object.defineProperty(this, "_pending", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        Object.defineProperty(this, "value", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: void 0
        });
        this._started = false;
        this._fetch = initialFetch;
        this.value = mobx_1.observable.box(undefined, { deep: false });
        this._pending = mobx_1.observable.box(false);
    }
    Object.defineProperty(FetchObservable.prototype, "current", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function () {
            var _this = this;
            if (this._fetch !== undefined && !this._started) {
                this._started = true;
                mobx_1._allowStateChanges(true, function () {
                    _this._pending.set(true);
                });
                this._fetch(function (newValue) {
                    mobx_1._allowStateChanges(true, function () {
                        _this.value.set(newValue);
                        _this._pending.set(false);
                    });
                });
            }
            return this.value.get();
        }
    });
    Object.defineProperty(FetchObservable.prototype, "fetch", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function () {
            if (this._started)
                this._started = false;
            return this.current();
        }
    });
    Object.defineProperty(FetchObservable.prototype, "set", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function (newValue) {
            var _this = this;
            mobx_1.runInAction(function () {
                _this.value.set(newValue);
                _this._pending.set(false);
            });
            return this.value.get();
        }
    });
    Object.defineProperty(FetchObservable.prototype, "setFetch", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function (newFetch) {
            this._fetch = newFetch;
            return this.value.get();
        }
    });
    Object.defineProperty(FetchObservable.prototype, "pending", {
        get: function () {
            return this._pending.get();
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(FetchObservable.prototype, "started", {
        get: function () {
            return this._started && this._fetch !== undefined;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(FetchObservable.prototype, "fulfilled", {
        get: function () {
            return this.value.get() !== undefined;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(FetchObservable.prototype, "forEach", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function (run) {
            var _this = this;
            mobx_1.reaction(function () { return _this.current(); }, function (newValue) {
                if (newValue !== undefined)
                    run(newValue);
            }, { fireImmediately: true, name: "fetchObservable-forEach" });
        }
    });
    Object.defineProperty(FetchObservable.prototype, "map", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function (fn) {
            var _this = this;
            return new FetchObservable(function (sink) {
                _this.forEach(function (newValue) {
                    sink(fn(newValue));
                });
            });
        }
    });
    Object.defineProperty(FetchObservable.prototype, "flatMap", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function (fn) {
            var _this = this;
            return new FetchObservable(function (sink) {
                _this.forEach(function (newValue) {
                    fn(newValue).forEach(sink);
                });
            });
        }
    });
    Object.defineProperty(FetchObservable.prototype, "then", {
        enumerable: false,
        configurable: true,
        writable: true,
        value: function (fn) {
            var _this = this;
            return new FetchObservable(function (sink) {
                _this.forEach(function (newValue) {
                    var maybeObs = fn(newValue);
                    if (maybeObs instanceof FetchObservable)
                        maybeObs.forEach(sink);
                    else
                        // @ts-ignore
                        sink(maybeObs);
                });
            });
        }
    });
    return FetchObservable;
}());
exports.FetchObservable = FetchObservable;