Optional ReadonlycontainerWhere the popover is appended. Must be a positioned ancestor of the editing surface, or share its offset parent. Defaults to the surface's own parent.
Optional ReadonlygapGap between the link and the popover, in px. Defaults to 8.
Optional ReadonlyopenOpen a URL. Defaults to a new tab with noopener,noreferrer. A link in
a document is untrusted content, and the opener reference is what lets a
hostile page rewrite the one that opened it.
The link editor, as a popover at the link instead of a modal over the page.
A modal is the right shape for creating a link. There is nothing to point at yet. It is the wrong shape for editing one: the dialog covers the sentence the link sits in, and the thing you are checking is whether the href matches the words around it.