After a (slightly more than) cursory skimming through the code, AutoComplete appears to be an auto complete library without fuzzy searching (i.e. searching 'comptuer' would not match 'computer') that has a built in approach for showing why the library matched the results (i.e. searching 'comp' would show 'computer' as a result with the 'comp' part highlighted).

Fuse.js is purely just a fuzzy searching library. It's entirely up to the developer to do the front end (including the highlighting).

Based on AutoComplete.js's roadmap [0], it's pretty clear OP intends for this to become Fuse.js but with a front end component added on top.

[0] Primarily item 'Sort rendered results': https://tarekraafat.github.io/autoComplete.js/#/?id=_6-roadm...