electron/lib/renderer/api/clipboard.ts

import { IPC_MESSAGES } from '@electron/internal/common/ipc-messages';
import * as ipcRendererUtils from '@electron/internal/renderer/ipc-renderer-internal-utils';

const clipboard = process._linkedBinding('electron_common_clipboard');

const makeRemoteMethod = function (method: keyof Electron.Clipboard): any {
  return (...args: any[]) => ipcRendererUtils.invokeSync(IPC_MESSAGES.BROWSER_CLIPBOARD_SYNC, method, ...args);
};

if (process.platform === 'linux') {
  // On Linux we could not access clipboard in renderer process.
  for (const method of Object.keys(clipboard) as (keyof Electron.Clipboard)[]) {
    clipboard[method] = makeRemoteMethod(method);
  }
} else if (process.platform === 'darwin') {
  // Read/write to find pasteboard over IPC since only main process is notified of changes
  clipboard.readFindText = makeRemoteMethod('readFindText');
  clipboard.writeFindText = makeRemoteMethod('writeFindText');
}

export default clipboard;