export declare function createTextualDifferenceScorer(): import("@mastra/core/evals").MastraScorer<"textual-difference-scorer", import("@mastra/core/evals").ScorerRunInputForAgent, import("@mastra/core/evals").ScorerRunOutputForAgent, Record<"preprocessStepResult", {
    ratio: number;
    confidence: number;
    changes: number;
    lengthDiff: number;
}> & Record<"generateScoreStepResult", number>>;
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