@whook/whook/dist/services/repl.js

Build strong and efficient REST web services.

import { autoProvider, name, location, } from 'knifecycle';
import { identity, noop } from '../libs/utils.js';
import repl from 'node:repl';
export default location(name('repl', autoProvider(initREPL)), import.meta.url);
const REPL_BANNER = `
    _      ____             __     ___  _______  __ 
    | | /| / / /  ___  ___  / /__  / _ \\/ __/ _ \\/ / 
    | |/ |/ / _ \\/ _ \\/ _ \\/  '_/ / , _/ _// ___/ /__
    |__/|__/_//_/\\___/\\___/_/\\_\\ /_/|_/___/_/  /____/

           Inject services with \`.inject\`.
           > .inject log
           > log('info', '👋 - Hello REPL!'); 
`;
async function initREPL({ $injector, $dispose, log = noop, stdin = process.stdin, stdout = process.stdout, }) {
    log('debug', '🖵 - Initializing the REPL service!');
    stdout.write(REPL_BANNER);
    const loop = repl.start({
        prompt: 'whook> ',
        ignoreUndefined: true,
        breakEvalOnSigint: true,
        input: stdin,
        output: stdout,
    });
    loop.defineCommand('inject', {
        help: 'Inject services.',
        async action(name) {
            this.clearBufferedCommand();
            const services = await $injector(name.split(/\s/g).filter(identity));
            Object.keys(services).forEach((key) => {
                loop.context[key] = services[key];
            });
            this.displayPrompt();
        },
    });
    loop.on('exit', async () => {
        await $dispose();
    });
    return {
        service: undefined,
        dispose: async () => {
            loop.close();
        },
    };
}
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