10.0.0-alpha.1 - Component overwrites property/method at `t` key

I have components that look roughly like this:

class MyComponent extends Component {
  t (input) {
    return translated(input);
  }

  render () {
    return <div>${this.t('whatever')}</div>;
  }
}

After upgrading to 10.0.0-alpha.1, they all started failing to render. I checked the value of this.t and found that it was false instead of a reference to the method. I have not looked into where/how it was set, or if there are any other properties overwrites I didn’t expect. I was able to fix by renaming to tr.

Generally, if preact sets property keys on elements, I’d expect them to be a little more obfuscated. Or if there’s a list of reserved keys, that would help, I suppose–maybe make a rule of no one-letter methods? I guess this is likely from aggressive minification? If so, is that a possible conflict with aggressive minification of larger bundles? (Since they may perform the same operation to rename instance properties.)

I have a sandbox for this, but it seems to be having trouble fetching the 10.0.0-alpha.1 dep for me. https://codesandbox.io/s/lpqj1lw12m Hopefully it works later, or this is easy to test/repro.

[marvinhagemeister]

This is probably fixed with #1377 . My guess is that our minifier turned this._force into this.t because we set that to false on each state update.

[marvinhagemeister]

Alpha 2 is out 🎉