A way to create persistent "wired" fragments that can be moved around when diffed through µdomdiff.

import {diffable, persistent} from 'uwire';

const wire = persistent(fragment);
diffable(wire, 1);  // repopulate all nodes, if gone, returns the fragment
diffable(wire, 0);  // return the initial fragment firstChild
diffable(wire, -0); // return the initial fragment lastChild
diffable(wire, -1); // remove all nodes and return the firstChild

If the fragment has only one child node, the diffable will always return that child node instead, making it a no-op.

It's like attaching, via strings (wires), the behavior of a fragment that cannot be used to obtain the same result.

A wire is not really a fragment per se, but it carries with it all it's needed to reuse, move, remove, re-append, such fragment.

      ┌--------▶[fragment]
◀---[wire]        |
        ├--------▶├ firstChild
        |         ├ ...
        └--------▶└ lastChild