doesn't find ReferenceErrors?

[TimKraemer]

Hi I'm using biome and biome-vscode for the first time today. Setup was straight forward, so far so good - but I noticed, while showing linting errors, it doesn't show obvious ReferenceErrors?

here you can see, while it's showing me that forEach should be replaced by for...of it does not show me, that thisShouldBeAnError is not existing and therefor will throw a ReferenceError.

This is my biome.json

{
  "$schema": "https://biomejs.dev/schemas/1.7.1/schema.json",
  "organizeImports": {
    "enabled": true
  },
  "linter": {
    "enabled": true,
    "rules": {
      "recommended": true
    }
  },
  "formatter": {
    "indentStyle": "space"
  },
  "javascript": {
    "formatter": {
      "semicolons": "asNeeded"
    }
  }
}

Did I miss something? Or will I still need eslint for those errors?

[TimKraemer]

found it myself... the rule is called no-undeclared-variables and it's not one of the recommended ones - wild!

this is my updated config - probably should have posted this into the main biomejs discussion, since it's not the extensions fault. Maybe someone can move it?

{
  "$schema": "https://biomejs.dev/schemas/1.7.1/schema.json",
  "organizeImports": {
    "enabled": true
  },
  "linter": {
    "enabled": true,
    "rules": {
      "recommended": true,
      "correctness": { "noUndeclaredVariables": "error" }
    }
  },
  "formatter": {
    "indentStyle": "space"
  },
  "javascript": {
    "formatter": {
      "semicolons": "asNeeded"
    }
  }
}