librepl

librepl - Interactive REPL utilities. Repl class creates command-line interfaces with custom commands, state persistence, and terminal formatting. Supports dependency injection for testability. Use for building CLI tools, interactive debugging interfaces, and developer utilities.

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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/librepl

SKILL.md

librepl Skill

When to Use

Building interactive CLI tools
Creating debug and exploration interfaces
Adding REPL functionality to applications
Prototyping with persistent state

Key Concepts

Repl: Interactive command-line interface with custom commands, history, and state management.

Usage Patterns

Pattern 1: Create custom REPL

javascript

import { Repl } from "@copilot-ld/librepl";

const repl = new Repl({
  prompt: "agent> ",
  commands: {
    search: async (query) => {
      const results = await searchIndex(query);
      return JSON.stringify(results, null, 2);
    },
    help: () => "Commands: search <query>, help, exit",
  },
});

await repl.start();

Pattern 2: State persistence