export interface ValidationResult {
    valid: boolean;
    error?: string;
    sanitized?: string;
}
export interface ValidateInputOptions {
    strict?: boolean;
    allowEmpty?: boolean;
    maxLength?: number;
}
export declare function validateInput(value: unknown, options?: ValidateInputOptions): ValidationResult;
export declare function assertValidInput(value: unknown, context: string, strict?: boolean): asserts value is string;
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