@rxx/worker/lib/development/worker.js

React MVI micro framework.

"use strict";
/**
 * @fileoverview
 * @author Taketoshi Aono
 */
Object.defineProperty(exports, "__esModule", { value: true });
var rxjs_1 = require("rxjs");
var WorkerPostEventType;
(function (WorkerPostEventType) {
    WorkerPostEventType["INITIALIZED"] = "INITIALIZED";
    WorkerPostEventType["DISPATCHED"] = "DISPATCHED";
    WorkerPostEventType["UPDATE"] = "UPDATE";
})(WorkerPostEventType = exports.WorkerPostEventType || (exports.WorkerPostEventType = {}));
var WorkerReceiveEventType;
(function (WorkerReceiveEventType) {
    WorkerReceiveEventType["DISPATCH"] = "DISPATCH";
    WorkerReceiveEventType["INITIALIZE"] = "INITIALIZE";
    WorkerReceiveEventType["EXIT"] = "EXIT";
})(WorkerReceiveEventType = exports.WorkerReceiveEventType || (exports.WorkerReceiveEventType = {}));
exports.initWorker = function (provisioning) {
    var subject = new rxjs_1.Subject();
    var subscription = new rxjs_1.Subscription();
    var post = process.env.RMVI_TEST
        ? function (_a) {
            var type = _a.type, payload = _a.payload;
            global['RECEIVE_WORKER_MESSAGE']({ type: type, payload: payload });
        }
        : typeof postMessage === 'function'
            ? function (_a) {
                var type = _a.type, payload = _a.payload;
                postMessage({ type: type, payload: payload });
            }
            : function () { };
    if (typeof Worker === 'function') {
        onmessage = function (e) {
            var data = e.data;
            subject.next(data);
        };
    }
    var publisher = provisioning.getPublisher();
    subscription.add(subject.subscribe(function (_a) {
        var type = _a.type, payload = _a.payload;
        switch (type) {
            case WorkerReceiveEventType.DISPATCH:
                publisher(payload.type, payload.payload);
                provisioning.emitAsync(function () {
                    return post({ type: WorkerPostEventType.DISPATCHED, payload: payload });
                });
                break;
            case WorkerReceiveEventType.INITIALIZE:
                provisioning.prepare(payload);
                provisioning.subscribe(function (state, isInitial) {
                    if (isInitial) {
                        post({
                            type: WorkerPostEventType.INITIALIZED,
                            payload: state.view,
                        });
                    }
                    else {
                        post({ type: WorkerPostEventType.UPDATE, payload: state.view });
                    }
                }, true);
                break;
            case WorkerReceiveEventType.EXIT:
                publisher.unsubscribe();
                provisioning.dispose();
                subscription.unsubscribe();
                break;
            default:
                return;
        }
    }));
    return subject;
};
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