@lynx-js/webpack-dev-transport/lib/client/socket.js

A webpack dev-server transport implementation for Lynx

// Copyright 2024 The Lynx Authors. All rights reserved.
// Licensed under the Apache License Version 2.0 that can be found in the
// LICENSE file in the root directory of this source tree.
import { log } from './log.js';
import { LynxTransportClient } from './transport.js';
// this LynxTransportClient is here as a default fallback, in case the client is not injected
const C = typeof __webpack_dev_server_client__ === 'undefined'
    ? LynxTransportClient
    : ('default' in __webpack_dev_server_client__
        ? __webpack_dev_server_client__.default
        : __webpack_dev_server_client__);
let retries = 0;
let maxRetries = 10;
// Initialized client is exported so external consumers can utilize the same instance
// It is mutable to enforce singleton
export let client = null;
const socket = function initSocket(url, handlers, reconnect) {
    client = new C(url);
    client.onOpen(() => {
        retries = 0;
        if (reconnect !== undefined) {
            maxRetries = reconnect;
        }
    });
    client.onClose(() => {
        if (retries === 0) {
            handlers['close']?.(void 0, void 0);
        }
        // Try to reconnect.
        client = null;
        // After 10 retries stop trying, to prevent log spam.
        if (retries < maxRetries) {
            // Exponentially increase timeout to reconnect.
            // Respectfully copied from the package `got`.
            const retryInMs = 1000 * Math.pow(2, retries) + Math.random() * 100;
            retries += 1;
            log.info('Trying to reconnect...');
            setTimeout(() => {
                socket(url, handlers, reconnect);
            }, retryInMs);
        }
        else {
            log.error('Unable to establish a connection after exceeding the maximum retry attempts.');
        }
    });
    client.onMessage((data) => {
        const message = JSON.parse(data);
        handlers[message.type]?.(message.data, message.params);
    });
};
export default socket;
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