index.js

import { EventEmitter } from 'events';
import path from 'path'
import { execFile } from 'child_process';
import {fileURLToPath} from 'node:url';
const __dirname = path.dirname(fileURLToPath(import.meta.url))

class ClipboardEventListener extends EventEmitter {
  constructor() {
    super();
    this.child = null;
  }

  startListening() {

    const { platform } = process;
    if (platform === 'win32') {
      this.child = execFile(path.join(__dirname,'platform/clipboard-event-handler-win32.exe'));
    }
    else if (platform === 'linux') {
      this.child = execFile(path.join(__dirname,'platform/clipboard-event-handler-linux'));
    }
    else if (platform === 'darwin') {
      this.child = execFile(path.join(__dirname,'platform/clipboard-event-handler-mac'));
    }
    else {
      throw 'Not yet supported';
    }

    this.child.stdout.on('data', (data) => {
      if (data.trim() === 'CLIPBOARD_CHANGE') {
        this.emit('change');
      }
    });

  }

  stopListening() {
    const res = this.child.kill();
    return res;
  }
}

export default new ClipboardEventListener();

// Sample usage
/*
import clipboardListener from 'clipboard-event'

// To start listening
clipboardListener.startListening();

clipboardListener.on('change', () => {
  console.log('Clipboard changed');
});

// To stop listening
clipboardListener.stopListening();
*/