warn function

void warn(String message, { bool deprecation = false, })

Prints a warning message associated with the current @import or function call.

If deprecation is true, the warning is emitted as a deprecation warning.

This may only be called within a custom function or importer callback.

Implementation

void warn(String message, {bool deprecation = false}) =>
    switch (EvaluationContext.currentOrNull) {
      var context? => context.warn(
          message,
          deprecation ? Deprecation.userAuthored : null,
        ),
      _ when deprecation => Logger.defaultLogger.warnForDeprecation(
          Deprecation.userAuthored,
          message,
        ),
      _ => Logger.defaultLogger.warn(message),
    };