/**
 * Drift Detector
 *
 * Detects schema drift between expected schema (from entities) and
 * actual database schema.
 */
import type { SchemaAST } from '../../schema/schemaAST.js';
import type { DriftReport } from '../../schema/types.js';
import type { Dialect } from '../../type/index.js';
/**
 * Options for drift detection.
 */
export interface DriftDetectorOptions {
    /** Include column type mismatches */
    checkTypes?: boolean;
    /** Include nullable mismatches */
    checkNullable?: boolean;
    /** Include index differences */
    checkIndexes?: boolean;
    /** Include foreign key differences */
    checkForeignKeys?: boolean;
    /** Include default value differences */
    checkDefaults?: boolean;
    /** SQL dialect for type formatting */
    dialect?: Dialect;
}
/**
 * Detects drift between expected and actual database schemas.
 */
export declare class DriftDetector {
    private readonly expectedAST;
    private readonly actualAST;
    private readonly options;
    private readonly dialect;
    constructor(expectedAST: SchemaAST, actualAST: SchemaAST, options?: DriftDetectorOptions);
    /**
     * Detect all schema drift.
     */
    detect(): DriftReport;
    /**
     * Detect table-level drifts (missing/unexpected tables).
     */
    private detectTableDrifts;
    /**
     * Detect column-level drifts.
     */
    private detectColumnDrifts;
    /**
     * Add drifts for column alterations (type/nullable mismatches).
     */
    private addAlterColumnDrifts;
    /**
     * Detect index drifts.
     */
    private detectIndexDrifts;
    /**
     * Detect relationship/FK drifts.
     */
    private detectRelationshipDrifts;
    /**
     * Calculate overall status based on drifts.
     */
    private calculateStatus;
    /**
     * Create a summary of drifts by severity.
     */
    private createSummary;
    /**
     * Format type for display.
     */
    private formatType;
}
/**
 * Create a DriftDetector for comparing expected vs actual schemas.
 */
export declare function createDriftDetector(expectedAST: SchemaAST, actualAST: SchemaAST, options?: DriftDetectorOptions): DriftDetector;
/**
 * Quick check for schema drift.
 */
export declare function detectDrift(expectedAST: SchemaAST, actualAST: SchemaAST, options?: DriftDetectorOptions): DriftReport;
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