[Existenceblinks]

I found some clue on the docs' TEXTS section.

> if the format is hardcoded, the name of the component in which the text resides would be the title

So it's component based tracking, though inside-component is hard to form context (e.g. line/column tracking won't work) even if you have AST of javascript. When code changes, AST changes (tree nodes tracking won't work either).

Interesting approach not to use hole like `{{ }}`.