import { xLuceneTypeConfig } from '@terascope/types';
import BaseType from '../base-type.js';
import { GraphQLType, TypeESMapping, DuckDBTypeConfig } from '../../interfaces.js';
/**
 * A nested JSON object.
 *
 * - **ES/OpenSearch mapping:** `{ type: 'object' }`, or `{ type: 'nested' }`
 *   when `array: true`. The `nested` type preserves the independence of each
 *   array element for querying (an `object` array flattens its values). When
 *   `indexed: false` the object is disabled via `enabled: false` (not
 *   `index: false`).
 * - **GraphQL:** a `JSONObject` custom scalar (the `scalar JSONObject`
 *   definition is emitted alongside the field).
 * - **xLucene:** `Object`.
 *
 * @example
 * const config: DataTypeConfig = {
 *     version: 1,
 *     fields: { metadata: { type: 'Object' } }
 * };
 */
export default class ObjectType extends BaseType {
    toESMapping(): TypeESMapping;
    toGraphQL(): GraphQLType;
    toXlucene(): xLuceneTypeConfig;
    /**
     * The DuckDB column type for this field.
     * JSON, because an Object with no declared children has no known shape. An Object
     * with declared children becomes a GroupType, which maps to a STRUCT instead.
     */
    toDuckDB(): DuckDBTypeConfig;
}
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