@yankeeinlondon/claudine/dist/index.js

A simple library to help with Claude Code

import readline from "node:readline";
import { isNumber } from "inferred-types";
import { createKindError } from "@yankeeinlondon/kind-error";

//#region src/constants.ts
const SUCCESS = 0;
const ERROR = 1;
const BLOCKING_ERROR = 2;

//#endregion
//#region src/errors.ts
const Unexpected = createKindError("Unexpected", { library: "claudine" });

//#endregion
//#region src/createHook.ts
/**
* **createHook**(hook)
*
* A builder pattern for handing Claude Code hooks.
*
* - [Docs](https://docs.anthropic.com/en/docs/claude-code/hooks) for Claude Hooks
*/
function createHook(_hook) {
	return { handler(handler) {
		try {
			const readStdIn = async function readStdin() {
				const rl = readline.createInterface({ input: process.stdin });
				const lines = [];
				for await (const line of rl) lines.push(line);
				return lines.join("\n");
			};
			return { async handle() {
				const text = await readStdIn();
				const event = JSON.parse(text);
				const resp = await handler(event);
				if (isNumber(resp)) process.exit(resp);
				else console.log(JSON.stringify(resp));
			} };
		} catch (e) {
			throw Unexpected.proxy(e);
		}
	} };
}

//#endregion
export { BLOCKING_ERROR, ERROR, SUCCESS, Unexpected, createHook };