monex/dist/interactive/stdin.js

Execute one or multiple scripts, interactively or in daemon mode, and restart them whenever they crash or a watched file changes.

/* IMPORT */
import process from 'node:process';
import Events from './events.js';
/* MAIN */
class Stdin {
    /* CONSTRUCTOR */
    constructor() {
        /* LIFECYCLE */
        this.init = () => {
            process.stdin.on('data', this.onData);
        };
        this.destroy = () => {
            process.stdin.off('data', this.onData);
        };
        this.refresh = () => {
            const isListeningNext = !!this.events.get('restart').length;
            if (this.isListening === isListeningNext)
                return;
            this.isListening = isListeningNext;
            if (this.isListening) {
                this.init();
            }
            else {
                this.destroy();
            }
        };
        /* API */
        this.onData = (data) => {
            if (data.toString().trim().toLowerCase() !== 'rs')
                return;
            this.events.emit('restart');
        };
        this.onRestart = (listener) => {
            const disposer = this.events.on('restart', listener);
            this.refresh();
            return () => {
                disposer();
                this.refresh();
            };
        };
        this.events = new Events();
        this.isListening = false;
    }
}
/* EXPORT */
export default new Stdin();