The interview process was similar to all that were mentioned here. The basic JS questions and algo + data structures. Just study JavaScript and try to find and solve various questions, followed by optimization.
NDA.
The following metrics were computed from 4 interview experiences for the Meta Front End Engineer role in London, United Kingdom.
Meta's interview process for their Front End Engineer roles in London, the United Kingdom is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Meta's Front End Engineer interview process in London, United Kingdom.