import type { CypherEnvironment } from "../../Environment";
import type { CypherCompilable, Expr } from "../../types";
/** @inline */
type LabelSource = string | LabelExpr | Expr;
/** @group Patterns */
export type LabelOperator = "&" | "|" | "!" | "%";
/**
 * Label Expression to be used as part of a Pattern
 * @see {@link https://neo4j.com/docs/cypher-manual/current/syntax/expressions/#label-expressions | Cypher Documentation}
 * @group Patterns
 */
export declare abstract class LabelExpr implements CypherCompilable {
    protected operator: LabelOperator;
    constructor(operator: LabelOperator);
    /**
     * @internal
     */
    abstract getCypher(env: CypherEnvironment): string;
    protected compileLabel(expr: LabelSource, env: CypherEnvironment): string;
}
/** Generates an `&` operator between labels or types
 * @see {@link https://neo4j.com/docs/cypher-manual/current/syntax/expressions/#label-expressions | Cypher Documentation}
 * @group Expressions
 * @category Operators
 */
declare function labelAnd(...labels: Array<LabelSource>): LabelExpr;
/** Generates an `|` operator between labels or types
 * @see {@link https://neo4j.com/docs/cypher-manual/current/syntax/expressions/#label-expressions | Cypher Documentation}
 * @group Expressions
 * @category Operators
 */
declare function labelOr(...labels: Array<LabelSource>): LabelExpr;
/** Generates an `!` operator for a label or type
 * @see {@link https://neo4j.com/docs/cypher-manual/current/syntax/expressions/#label-expressions | Cypher Documentation}
 * @group Expressions
 * @category Operators
 */
declare function labelNot(label: LabelSource): LabelExpr;
export declare const labelExpr: {
    and: typeof labelAnd;
    or: typeof labelOr;
    not: typeof labelNot;
    wildcard: LabelExpr;
};
export {};