Async/Await Class Constructor

At the moment, I'm attempting to use async/await within a class constructor function. This is so that I can get a custom e-mail tag for an Electron project I'm working on.

customElements.define('e-mail', class extends HTMLElement {
  async constructor() {
    super()

    let uid = this.getAttribute('data-uid')
    let message = await grabUID(uid)

    const shadowRoot = this.attachShadow({mode: 'open'})
    shadowRoot.innerHTML = `
      <div id="email">A random email message has appeared. ${message}</div>
    `
  }
})

At the moment however, the project does not work, with the following error:

Class constructor may not be an async method

Is there a way to circumvent this so that I can use async/await within this? Instead of requiring callbacks or .then()?

via Popey Gilbert