TSC does not run when adding plugin and rule to .eslintrc.js about eslint-plugin-tsc HOT 3 OPEN

I know this is an old thread but in 2021 I had this issue, too; eslint should have errored for us but instead passed eslint and allowed commit. This also meant CI/CD also passed. We used the same configuration in the README.

"tsc/config": [1, {
    configFile: "tsconfig.json"
}]

Manually running yarn eslint ... on the problem file output (instead of through lint-staged on pre-commit) output warnings which allowed linting to pass.

After changing the config rule to error (or, as I recently discovered 2 = error, 1 = warn) , eslint now fails as expected and now fails both pre-commit and CI/CD linting:

"tsc/config": ["error", {
    configFile: "tsconfig.json"
}]

from eslint-plugin-tsc.

Interesting.
Cannot tell what is reason of such behavior.
Can you show your tsconfig?

from eslint-plugin-tsc.

for typescript files you need to explicitly pass the extensions
eslint . --ext .js,.jsx,.ts,.tsx

from eslint-plugin-tsc.