unsupported_value

Details about the 'unsupported_value' diagnostic produced by the Dart analyzer.

The value '{0}' isn't supported by '{1}'.

The analyzer produces this diagnostic when an analysis options file contains a valid option and the value of that option is not a valid value.

The following code produces this diagnostic because fatal isn't a valid severity:

yaml

// %uri="analysis_options.yaml"
analyzer:
  errors:
    dead_code: fatal

If a valid value specifies the intended behavior, then replace the unsupported value with it:

yaml

// %uri="analysis_options.yaml"
analyzer:
  errors:
    dead_code: error

If there is no valid value to use, then remove the option:

yaml

// %uri="analysis_options.yaml"
analyzer:
  errors:

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