Issue with html.resolve "update is not a function"

[khrome]

Hey there, I'm just starting to use resolve and I'm hitting issues

const Header = {
  font: property(''),
  text: property(''),
  renderedText: ({ text }) => {
      return text;
  },
  render: ({ renderedText }) => {
      var promise = new Promise((resolve, reject) => {
          setTimeout(function(){
              resolve('This is an async thing')
          }, 500)
      })
      html`
      <span>${html.resolve(
      promise
        .then((value) => html`<div>${value}</div>`)
        .catch(() => html`<div>Error!</div>`),
      html`Loading...`,
    )}</span>
  `},
};

define('just-a-header', Header);

I'm sure it's my own user error, but it's unclear what the issue is.

Full harness here: https://gist.github.com/khrome/64a7027121b2608b2675aa4a908d457f

[smalluban]

Can I help here? :)

[khrome]

nope, figured out I was missing an explicit return :D Thanks though! and thanks for all the work on the library.