/**
 * Constants for validation and false positive prevention
 * Contains test data, example patterns, and exclusion lists
 */
export declare const TEST_CREDIT_CARDS: Set<string>;
export declare const NORMALIZED_TEST_CREDIT_CARDS: Set<string>;
export declare const CREDIT_CARD_BRANDS: {
    visa: {
        pattern: RegExp;
        lengths: readonly number[];
    };
    mastercard: {
        pattern: RegExp;
        lengths: readonly number[];
    };
    amex: {
        pattern: RegExp;
        lengths: readonly number[];
    };
    discover: {
        pattern: RegExp;
        lengths: readonly number[];
    };
    jcb: {
        pattern: RegExp;
        lengths: readonly number[];
    };
    dinersclub: {
        pattern: RegExp;
        lengths: readonly number[];
    };
    maestro: {
        pattern: RegExp;
        lengths: readonly number[];
    };
};
export declare const EXAMPLE_DOMAINS: Set<string>;
export declare const NON_PII_EMAIL_PREFIXES: Set<string>;
export declare const CONTEXT_KEYWORDS: {
    readonly email: Set<string>;
    readonly credit_card: Set<string>;
};
export declare const NEGATIVE_CONTEXT_KEYWORDS: Set<string>;
export declare const STRICTNESS_LEVELS: {
    readonly fast: {
        readonly description: "Maximum performance, minimal false positive filtering";
        readonly contextRequired: false;
        readonly excludeTestData: false;
        readonly excludePrivateNetworks: false;
        readonly brandValidation: false;
    };
    readonly balanced: {
        readonly description: "Good balance of performance and accuracy";
        readonly contextRequired: false;
        readonly excludeTestData: true;
        readonly excludePrivateNetworks: false;
        readonly brandValidation: true;
    };
    readonly strict: {
        readonly description: "Maximum accuracy, stricter validation";
        readonly contextRequired: true;
        readonly excludeTestData: true;
        readonly excludePrivateNetworks: true;
        readonly brandValidation: true;
    };
};
export type StrictnessLevel = keyof typeof STRICTNESS_LEVELS;
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