import { Descriptor, Field, FieldType, ComputedFieldRef, MappingFieldRef, AttributeExpression, ComputedFieldExpression, Expression } from '../../state/index.js';
export declare function getGroups(descriptor: Descriptor): Array<Field>;
export declare function _groupIndexFinder(state: Descriptor, productId: string, name: string): number;
export declare function _groupIndexSelector(state: Descriptor, productId: string, name: string): number;
export declare function getFieldType(field: Field): FieldType;
export declare function getFieldProductId(field: MappingFieldRef): string;
export declare function getFieldAlias(field: MappingFieldRef): string;
export declare function getFieldComputedFieldId(field: ComputedFieldRef): string;
export declare const newMappingFieldRef: (from: string, on: string) => MappingFieldRef;
/** field is MappingFieldRef := any time isMappingFieldRef is called with some Variable
 * TypeScript will narrow that variable to that specific type if the original type is compatible
 * https://www.typescriptlang.org/docs/handbook/advanced-types.html#using-type-predicates
 */
export declare function isMappingFieldRef(field: Field): field is MappingFieldRef;
export declare const newComputedFieldRef: (computedFieldId: string) => ComputedFieldRef;
export declare function isComputedFieldRef(field: Field): field is ComputedFieldRef;
export declare const setFieldProductId: (field: MappingFieldRef, from: string) => MappingFieldRef;
export declare const setFieldAlias: (field: MappingFieldRef, on: string) => MappingFieldRef;
export declare const setFieldComputedFieldId: (field: ComputedFieldRef, computedFieldId: string) => ComputedFieldRef;
export declare function expressionToField(expression: Expression): Field;
export declare const fromAttributeExpression: (expression: AttributeExpression) => MappingFieldRef;
export declare const fromComputedFieldExpression: (expression: ComputedFieldExpression) => ComputedFieldRef;