/**
 * PostgreSQL JSONB Tools - Read Operations
 *
 * Read-only JSONB tools: extract, contains, pathQuery.
 * Also exports shared utilities: toJsonString, resolveJsonbTable, parseSelectAlias.
 */
import type { PostgresAdapter } from "../../postgres-adapter.js";
import type { ToolDefinition } from "../../../../types/index.js";
/**
 * Convert value to a valid JSON string for PostgreSQL's ::jsonb cast
 * If the value is a string that looks like a JSON object or array, it is parsed and
 * validated to support raw JSON literals, throwing a ValidationError if malformed.
 */
export declare function toJsonString(value: unknown): string;
/**
 * Resolve table and schema for JSONB tools.
 * Validates schema existence when non-public, returns schema-qualified table name.
 * Returns [qualifiedTable, null] on success, or [null, errorResponse] on failure.
 */
export declare function resolveJsonbTable(adapter: PostgresAdapter, table: string, schema?: string): Promise<[string, null] | [null, {
    success: false;
    error: string;
}]>;
export declare function createJsonbExtractTool(adapter: PostgresAdapter): ToolDefinition;
export declare function createJsonbContainsTool(adapter: PostgresAdapter): ToolDefinition;
export declare function createJsonbPathQueryTool(adapter: PostgresAdapter): ToolDefinition;
/**
 * Parse a select expression and extract the alias if present.
 * Handles: "column", "expression AS alias", "expression as alias"
 * Returns: { expr: string, alias: string }
 */
export declare function parseSelectAlias(selectItem: string): {
    expr: string;
    alias: string;
};
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