export declare const PAGESPEED_CONFIG: {
    API_BASE_URL: string;
    DEFAULT_TIMEOUT: number;
    HEAD_REQUEST_TIMEOUT: number;
    SITEMAP_FETCH_TIMEOUT: number;
    MAX_CONCURRENT_REQUESTS: number;
    BATCH_DELAY_MS: number;
    DEFAULT_MAX_URLS: number;
    DEFAULT_RETRY_ATTEMPTS: number;
    RETRY_DELAY_BASE: number;
    RETRY_DELAY_MAX: number;
    XML_EXTENSIONS: string[];
    XML_PATHS: string[];
    HTML_CONTENT_TYPE: string;
    PERFORMANCE_THRESHOLDS: {
        GOOD: number;
        NEEDS_IMPROVEMENT: number;
        POOR: number;
    };
    SIGNIFICANT_SCORE_CHANGE: number;
    CORE_WEB_VITALS: {
        FCP_GOOD: number;
        FCP_POOR: number;
        LCP_GOOD: number;
        LCP_POOR: number;
        FID_GOOD: number;
        FID_POOR: number;
        CLS_GOOD: number;
        CLS_POOR: number;
        TTI_GOOD: number;
        TTI_POOR: number;
        TBT_GOOD: number;
        TBT_POOR: number;
    };
};
export declare const SUPPORTED_LOCALES: {
    name: string;
    value: string;
}[];
export declare const STRATEGY_OPTIONS: {
    name: string;
    value: string;
    description: string;
}[];
export declare const CATEGORY_OPTIONS: {
    name: string;
    value: string;
    description: string;
}[];
export declare const OUTPUT_FORMAT_OPTIONS: {
    name: string;
    value: string;
    description: string;
}[];
export declare const ERROR_TYPES: {
    INVALID_URL: string;
    INVALID_CONTENT_TYPE: string;
    NOT_HTML: string;
    API_ERROR: string;
    TIMEOUT: string;
    RATE_LIMITED: string;
    NETWORK_ERROR: string;
    AUTHENTICATION_ERROR: string;
    QUOTA_EXCEEDED: string;
    UNKNOWN: string;
};
export declare const USER_FRIENDLY_ERROR_MESSAGES: {
    [key: string]: string;
};
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