I spent way too long figuring out why Prettier was not working in VSCode.
Timo Ernst had the answer here
This is what Tim says:
First, press shift + cmd + p (Mac), enter “settings” and choose “Preferences: Open Settings (JSON)”. Then add the following:
"[typescript]": { "editor.defaultFormatter": "esbenp.prettier-vscode" },
"[typescriptreact]": { "editor.defaultFormatter": "esbenp.prettier-vscode" }
Make sure you have set “editor.formatOnSave”: true