import type { SimpleFilterFieldComparisonOperatorNode, SimpleFilterFieldExistsOperatorNode, SimpleFilterFieldGroupNode, SimpleFilterFieldInclusionOperatorNode, SimpleFilterFieldLeafNode, SimpleFilterFieldSearchOperatorNode, SimpleFilterFieldStatementNode } from '../../types/conversion-tree-nodes.js';
/** @internal */
export declare const DURATION_REGEX: RegExp;
/** @internal */
export declare const VARIABLE_REGEX: RegExp;
/** @internal */
export type NewOperatorNode = SimpleFilterFieldComparisonOperatorNode | SimpleFilterFieldInclusionOperatorNode | SimpleFilterFieldExistsOperatorNode | SimpleFilterFieldSearchOperatorNode;
/** @internal */
export type Polarity = 'positive' | 'negative' | 'none';
/** @internal */
export type OperatorDescriptor = {
    node: NewOperatorNode;
    polarity: Polarity;
};
/** @internal */
export declare const OPERATOR_MAP: Partial<Record<string, OperatorDescriptor>>;
/** @internal */
export declare function mapInputOperator(operator: string | undefined): OperatorDescriptor;
/** @internal */
export declare function statementPolarity(statement: SimpleFilterFieldStatementNode): Polarity;
/** @internal */
export declare function leafEquals(leaf: SimpleFilterFieldLeafNode, value: string | number | boolean): boolean;
/** @internal */
export declare function findSearchStatement(group: SimpleFilterFieldGroupNode, value: string | number | boolean): SimpleFilterFieldStatementNode | undefined;
/** @internal */
export declare function findIdenticalStatement(group: SimpleFilterFieldGroupNode, key: string, operatorNode: NewOperatorNode, value: string | number | boolean | undefined): SimpleFilterFieldStatementNode | undefined;