/**
 * JSON Schema Default Value Extraction
 *
 * Utilities to recursively extract default values from JSON Schema definitions.
 * Priority order:
 * 1. Explicit `default` property (highest)
 * 2. First item of `examples` array
 * 3. `const` value
 * 4. First `enum` value
 * 5. Smart type-based defaults (computed)
 */
import type { JSONSchemaDefinition } from './schema-types';
/**
 * Extract default values from a JSON Schema definition.
 *
 * Recursively walks the schema and builds an object containing all defined defaults.
 * For object types, extracts defaults only for required properties.
 * For nullable types (union with null), returns null.
 * For arrays with minItems, generates the minimum required items.
 *
 * @param schema - The JSON Schema to extract defaults from
 * @returns The extracted default value, or undefined if none found
 *
 * @example
 * ```typescript
 * const schema = {
 *   type: 'object',
 *   properties: {
 *     name: { type: 'string' },
 *     age: { type: 'integer', minimum: 0, maximum: 120 },
 *     active: { type: 'boolean' }
 *   },
 *   required: ['name', 'age']
 * }
 * const defaults = extractSchemaDefaults(schema)
 * // { name: '', age: 60 }  // only required props, smart defaults
 * ```
 */
export declare function extractSchemaDefaults(schema: JSONSchemaDefinition): unknown;