RunEvaluatorLike: ((props: DynamicRunEvaluatorParams, options: RunnableConfig) => Promise<EvaluationResult>) | ((props: DynamicRunEvaluatorParams, options: RunnableConfig) => EvaluationResult)

Type of a function that can be coerced into a RunEvaluator function. While we have the class-based RunEvaluator, it's often more convenient to directly pass a function to the runner. This type allows us to do that.

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