@aspnet/signalr/dist/esm/HubConnectionBuilder.js

ASP.NET Core SignalR Client

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
import { HttpConnection } from "./HttpConnection";
import { HubConnection } from "./HubConnection";
import { JsonHubProtocol } from "./JsonHubProtocol";
import { NullLogger } from "./Loggers";
import { Arg, ConsoleLogger } from "./Utils";
/** A builder for configuring {@link @aspnet/signalr.HubConnection} instances. */
var HubConnectionBuilder = /** @class */ (function () {
    function HubConnectionBuilder() {
    }
    HubConnectionBuilder.prototype.configureLogging = function (logging) {
        Arg.isRequired(logging, "logging");
        if (isLogger(logging)) {
            this.logger = logging;
        }
        else {
            this.logger = new ConsoleLogger(logging);
        }
        return this;
    };
    HubConnectionBuilder.prototype.withUrl = function (url, transportTypeOrOptions) {
        Arg.isRequired(url, "url");
        this.url = url;
        // Flow-typing knows where it's at. Since HttpTransportType is a number and IHttpConnectionOptions is guaranteed
        // to be an object, we know (as does TypeScript) this comparison is all we need to figure out which overload was called.
        if (typeof transportTypeOrOptions === "object") {
            this.httpConnectionOptions = transportTypeOrOptions;
        }
        else {
            this.httpConnectionOptions = {
                transport: transportTypeOrOptions,
            };
        }
        return this;
    };
    /** Configures the {@link @aspnet/signalr.HubConnection} to use the specified Hub Protocol.
     *
     * @param {IHubProtocol} protocol The {@link @aspnet/signalr.IHubProtocol} implementation to use.
     */
    HubConnectionBuilder.prototype.withHubProtocol = function (protocol) {
        Arg.isRequired(protocol, "protocol");
        this.protocol = protocol;
        return this;
    };
    /** Creates a {@link @aspnet/signalr.HubConnection} from the configuration options specified in this builder.
     *
     * @returns {HubConnection} The configured {@link @aspnet/signalr.HubConnection}.
     */
    HubConnectionBuilder.prototype.build = function () {
        // If httpConnectionOptions has a logger, use it. Otherwise, override it with the one
        // provided to configureLogger
        var httpConnectionOptions = this.httpConnectionOptions || {};
        // If it's 'null', the user **explicitly** asked for null, don't mess with it.
        if (httpConnectionOptions.logger === undefined) {
            // If our logger is undefined or null, that's OK, the HttpConnection constructor will handle it.
            httpConnectionOptions.logger = this.logger;
        }
        // Now create the connection
        if (!this.url) {
            throw new Error("The 'HubConnectionBuilder.withUrl' method must be called before building the connection.");
        }
        var connection = new HttpConnection(this.url, httpConnectionOptions);
        return HubConnection.create(connection, this.logger || NullLogger.instance, this.protocol || new JsonHubProtocol());
    };
    return HubConnectionBuilder;
}());
export { HubConnectionBuilder };
function isLogger(logger) {
    return logger.log !== undefined;
}
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