/**
 * PostgreSQL pgvector - Data Operations
 *
 * Write tools: extension, addColumn.
 * Also exports shared utilities: parseVector, truncateVector, checkTableAndColumn.
 */
import type { PostgresAdapter } from "../../postgres-adapter.js";
import type { ToolDefinition } from "../../../../types/index.js";
/**
 * Parse a PostgreSQL vector string to a number array.
 * Handles formats like "[0.1,0.2,0.3]" or "(0.1,0.2,0.3)"
 */
export declare function parseVector(vecStr: unknown): number[] | null;
/**
 * Truncate a vector for display, showing first/last N values.
 * For vectors <= maxDisplay, returns the full vector.
 */
export declare function truncateVector(vec: number[] | null | undefined, maxDisplay?: number): {
    preview: number[] | null;
    dimensions: number;
    truncated: boolean;
};
/**
 * Two-step existence check: table first, then column.
 * Returns null if both exist, or {error, suggestion} if either is missing.
 */
export declare function checkTableAndColumn(adapter: PostgresAdapter, table: string, column: string, schema: string, transactionId?: string): Promise<{
    error: string;
    code: string;
    category: string;
    suggestion: string;
} | null>;
export declare function createVectorExtensionTool(adapter: PostgresAdapter): ToolDefinition;
export declare function createVectorAddColumnTool(adapter: PostgresAdapter): ToolDefinition;
//# sourceMappingURL=data.d.ts.map