import { Filter } from '@judo/model-api';
import { GridColType } from '@mui/x-data-grid';
/**
 * MUI X DataGrid built-in operator tokens used by this codebase.
 *
 * NOTE: These are NOT model values — they belong to the rendering layer
 * (`@mui/x-data-grid`'s `getGridDefaultColumnTypes()`). They cannot be
 * derived from `@judo/model-api`. The local union exists so a typo in
 * the operator-mapping table fails compilation instead of silently
 * producing a string DataGrid will reject at runtime.
 */
export type DataGridOperator = "contains" | "equals" | "is" | "not" | "=" | "!=" | "<" | "<=" | ">" | ">=" | "before" | "onOrBefore" | "after" | "onOrAfter" | "isEmpty" | "isNotEmpty";
/**
 * Gets the MUI DataGrid column type for a Filter element.
 *
 * The underlying model may represent data types either with the bare name
 * (`NumericType`) or the prefixed EMF form (`data:NumericType`); both are
 * accepted and produce the same result.
 *
 * Same logic as getColumnType() in table-column-utils.ts, but operates on
 * Filter.attributeType instead of Column.attributeType.
 */
export declare function getFilterColumnType(filter: Filter): GridColType;
/**
 * Maps a model Filter's defaultOperation + data type to the MUI DataGrid
 * operator string used in GridFilterItem.
 *
 * The returned operator flows through the existing table-filter-utils.ts →
 * build-query-customizer.ts pipeline unchanged.
 */
export declare function getFilterDataGridOperator(filter: Filter): DataGridOperator;
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