Autocomplete

return c.resAutocomplete(
  new Autocomplete(c.focused?.value).choices(
    { name: 'world', value: 'world!!!' },
    { name: 'hi', value: 'hi!' },
  ),
)

The initialization argument is the word to search for.
The .choices() argument contains all choices.
Autocomplete returns only those choices that partially match the search word.