Mikhail A.

import open from 'open';
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app.on('web-contents-created', (_event, contents) => {
  contents.on('new-window', (e, urlLink) => {
    e.preventDefault();
    open(urlLink);
  });
  contents.on('will-navigate', (e, urlLink) => {
    if (urlLink !== contents.getURL()) {
      e.preventDefault();
      open(urlLink);
    }
  });
});