import type { FilterSchema } from '../types';
/**
 * Safe deep retrieval of values from an object
 * similar to lodash.get
 *
 * @example
 * ```typescript
 * const obj = { a: { b: { c: 1 } } };
 * const val = get(obj, 'a.b.c'); // 1
 * const val2 = get(obj, ['a', 'b', 'c']); // 1
 * const missing = get(obj, 'a.b.x', 'default'); // 'default'
 * ```
 */
export declare function get<T = any>(obj: any, path: string | string[], defaultValue?: T): T;
/**
 * Generic pick function
 * Creates an object composed of the picked object properties
 */
export declare function pick<T extends object, K extends keyof T>(obj: T, keys: K[]): Pick<T, K>;
/**
 * Generic omit function
 * Creates an object composed of the object properties that are not omitted
 */
/**
 * Generic omit function
 * Creates an object composed of the object properties that are not omitted
 * Optimized to avoid 'delete' which de-optimizes object shape in V8
 */
export declare function omit<T extends object, K extends keyof T>(obj: T, keys: K[]): Omit<T, K>;
/**
 * Pick specific fields from a schema
 * Useful for exposing a subset of the schema to the frontend
 *
 * @example
 * ```typescript
 * const publicSchema = pickSchemaFields(fullSchema, ['id', 'name']);
 * ```
 */
export declare function pickSchemaFields(schema: FilterSchema, fieldsToPick: string[]): FilterSchema;
/**
 * Omit specific fields from a schema
 * Useful for hiding sensitive or internal fields from the frontend
 *
 * @example
 * ```typescript
 * const publicSchema = omitSchemaFields(fullSchema, ['secret']);
 * ```
 */
export declare function omitSchemaFields(schema: FilterSchema, fieldsToOmit: string[]): FilterSchema;
/**
 * Default internal fields to omit when sending schema to frontend
 */
export declare const DEFAULT_INTERNAL_FIELDS: string[];
/**
 * Get a public version of the schema for the frontend
 * Automatically omits internal DB mappings and sensitive fields
 *
 * @example
 * ```typescript
 * // Use defaults
 * const publicSchema = getPublicSchema(fullSchema);
 *
 * // Custom omits (overrides defaults)
 * const customSchema = getPublicSchema(fullSchema, ['secret']);
 *
 * // Extend defaults
 * const extendedSchema = getPublicSchema(fullSchema, [...DEFAULT_INTERNAL_FIELDS, 'custom_field']);
 * ```
 */
export declare function getPublicSchema(schema: FilterSchema, omits?: string[]): FilterSchema;
//# sourceMappingURL=schema-filter.d.ts.map