Troubleshoot
Why is my Typescript intellisense slow?
You'll need to enable strict in your tsconfig.json:
"compilerOptions": {
...
"strict": true
}
If you're using a monorepo, make sure this is applied at the project level. Example:
./apps/some-app/tsconfig.json
^ make sure strict is true here
If you cannot use strict entirely, you'll need to at least enable strictNullChecks.