Language Server WebSocket Bridge

Overview

This script provides a WebSocket bridge to interface multiple Language Servers (e.g., svelte-language-server, pylsp, gopls, clangd, etc.) with clients via a single WebSocket connection. It supports various language servers concurrently and handles language-specific file extensions and initialization parameters.

Features

• Supports multiple language servers concurrently.
• Easy language server configuration and initialization parameter modification.
• Error handling and logging for language server processes.
• Utilizes vscode-jsonrpc for LSP message handling.
• Support for IPC and stdio communication with language servers.
• Automatic file URI translation between server and client paths.
• Temporary file creation for textDocument/didOpen events.

Usage

1. Install Node.js and the required language servers.
2. Configure the desired language servers in defaultServers.js.
3. Run the script: node index.js.
4. Connect to the WebSocket server on ws://localhost:3030/<language_endpoint>.
5. Transmit LSP messages via the WebSocket connection.

Configuration

Add or modify language server configurations in defaultServers.js:

exports.servers = [
   {
       endpointName: "language_endpoint", // WebSocket endpoint name
       args: ['executable_path', ['arg1', 'arg2', ...]],
       nameEndsWith: ".file_extension",
       connectionType: "ipc" | "stdio", // Communication type
       relativePath: true | false, // Whether to use relative paths
       serverFileNameReplacePattern: { // Server file name regex replacements
           from: /pattern/,
           to: "replacement"
       },
       clientFileNameReplacePattern: { // Client file name regex replacements
           from: /pattern/,
           to: "replacement"
       }
   }
   // Add more language server configurations here
];