Accessing a custom element in both shadow and light DOM

[nolanlawson]

#4219 proposes adding a new property on LightningElement that allows programmatic access to the underlying HTMLElement.

Currently you can do this with:

• this.template.host in shadow DOM
• this.firstChild.parentNode in light DOM

However, it's cumbersome to have two conventions for doing the same thing. So let's create a new property that does both:

• this.foo – works in both shadow and light DOM

What should we name foo? Vote in the poll!

[nolanlawson]

Closing the poll, with hostElement as the clear winner. Thanks for voting!

See also: #4259