You will be asked questions straight out of "Cracking the Coding Interview." Do a lot of LeetCode problems, and I mean a lot. They will ask many of those. Just be ready for technical questions.
About previous projects I've done.
The following metrics were computed from 7 interview experiences for the Meta Software Developer role in Canada.
Meta's interview process for their Software Developer roles in Canada is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Meta's Software Developer interview process in Canada.