repl-switcher v1.0.1

repl-switcher

Overview

The repl-switcher library provides a way to manage multiple REPL (Read-Eval-Print Loop) instances within a single application. It allows you to switch between different REPLs using a Tab key

REPLManager

A class that manages multiple REPL instances and allows switching between them.

Methods

• add(name: string, server: REPLServer): Adds a new Node.js REPLServer instance to the manager.

  • name: The name of the REPL instance., goes to prompt
  • server: The REPLServer instance.

Usage

import { REPLManager } from "./repl";
import * as repl from "node:repl";

// Create a manager
const manager = new REPLManager();

// Create a regular JavaScript REPL as usual
const jsRepl = repl.start({
  prompt: "js > ",
  terminal: true,
  useColors: true,
});

// Create a second REPL for LLM
const llmRepl = repl.start({
  prompt: "llm > ",
  terminal: true,
  useColors: true,
  eval: (cmd, context, filename, callback) => {
    const input = cmd.trim();
    if (!input or input === "(\n)") {
      callback(null, undefined);
      return;
    }

    // Simulate asynchronous processing
    Promise.resolve(`Processed by LLM: ${input}`)
      .then((result) => callback(null, result))
      .catch((err) => callback(err, undefined));
  },
});

// Add REPLs to the manager
manager.add("llm", llmRepl); // the first activates
manager.add("js", jsRepl);

License

This library is licensed under the MIT License.