/**
 * Base error class for pg-query-composer
 */
export declare class QueryComposerError extends Error {
    constructor(message: string);
}
/**
 * Error thrown when an invalid column is used
 */
export declare class InvalidColumnError extends QueryComposerError {
    constructor(column: string, allowed: readonly string[]);
}
/**
 * Error thrown when an invalid operator is used
 */
export declare class InvalidOperatorError extends QueryComposerError {
    constructor(operator: string);
}
/**
 * Error thrown when relation is not found
 */
export declare class RelationNotFoundError extends QueryComposerError {
    constructor(relation: string, model: string);
}
/**
 * Error thrown when subquery fails to build
 */
export declare class SubqueryError extends QueryComposerError {
    constructor(message: string);
}
/**
 * Error thrown when type mismatch occurs
 */
export declare class TypeMismatchError extends QueryComposerError {
    constructor(field: string, expected: string, received: string);
}
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