undefined_lint

'{0}' isn't a recognized lint rule.

The analyzer produces this diagnostic when an analysis options file attempts to enable a lint rule that is not defined.

The following code produces this diagnostic because implementation_import isn't a known lint:

// %uri="analysis_options.yaml"
linter:
  rules:
    - annotate_overrides
    - implementation_import

If the name of the lint was mistyped, then correct the name.

// %uri="analysis_options.yaml"
linter:
  rules:
    - annotate_overrides
    - implementation_imports

If there is no lint corresponding to the flagged entry, then remove the undefined lint:

// %uri="analysis_options.yaml"
linter:
  rules:
    - annotate_overrides