export interface RuleCodeShadowSummary {
    observed: number;
    matched: number;
    wouldBlock: number;
    wouldAllow: number;
    requireApproval: number;
    autoCorrect: number;
    errors: number;
    neutralControl: number;
    firstObservedAt: string | null;
    lastObservedAt: string | null;
}
export declare function summarizeRuleCodeShadowEvents(entries: readonly unknown[], activationId: string): RuleCodeShadowSummary;
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