export declare const AUDIT_CATEGORIES: readonly ["accessibility", "performance", "seo", "best-practices"];
export type AuditCategory = (typeof AUDIT_CATEGORIES)[number];
export declare function isAuditCategory(value: string): value is AuditCategory;
export type ImpactLevel = "critical" | "serious" | "moderate" | "minor";
/**
 * The parts of a Lighthouse result this project reads. Declared structurally
 * rather than imported so the extractor can be unit-tested without Lighthouse.
 */
export interface LighthouseAuditLike {
    id?: string;
    title?: string;
    description?: string;
    score: number | null;
    scoreDisplayMode?: string;
    numericValue?: number;
    numericUnit?: string;
    displayValue?: string;
    details?: {
        type?: string;
        items?: unknown[];
        [key: string]: unknown;
    };
}
export interface LighthouseCategoryLike {
    id?: string;
    title?: string;
    score: number | null;
    auditRefs?: Array<{
        id: string;
        weight?: number;
        group?: string;
    }>;
}
export interface LighthouseResultLike {
    lighthouseVersion?: string;
    fetchTime?: string;
    requestedUrl?: string;
    finalDisplayedUrl?: string;
    categories?: Record<string, LighthouseCategoryLike>;
    audits?: Record<string, LighthouseAuditLike>;
}
export interface AuditIssueDetails {
    type?: string;
    items: unknown[];
    /** How many items were dropped to keep the report small. */
    omittedItems: number;
}
export interface AuditIssue {
    id: string;
    title: string;
    description: string;
    score: number | null;
    weight: number;
    impact: ImpactLevel;
    displayValue?: string;
    details?: AuditIssueDetails;
}
export interface AuditMetric {
    value: number;
    score: number | null;
    displayValue?: string;
    unit?: string;
}
export interface AuditReport {
    category: string;
    metadata: {
        url: string;
        timestamp: string;
        device: string;
        lighthouseVersion: string;
    };
    /** 0-100, or null when the category is missing from the result. */
    score: number | null;
    summary: {
        failed: number;
        passed: number;
        manual: number;
        informative: number;
        notApplicable: number;
    };
    issues: AuditIssue[];
    groups?: Record<string, {
        issues: number;
    }>;
    metrics?: Record<string, AuditMetric>;
    /** Identifier of the stored unabridged report, when one was kept. */
    reportId?: string;
}