import type { ProgramNode } from "./ast.js";
export type JsonValue = boolean | null | number | string | JsonValue[] | {
    [key: string]: JsonValue;
};
export type PathSegment = number | string;
export type QueryPath = PathSegment[];
export interface QueryEntry {
    value: JsonValue;
    path: QueryPath | null;
}
export interface EvaluationOptions {
    functions?: Record<string, AsterQLFunction>;
    params?: Record<string, unknown>;
    reducers?: Record<string, AsterQLReducer>;
}
export type AsterQLFunction = (args: JsonValue[], context: FunctionContext) => JsonValue;
export type AsterQLReducer = (values: Iterable<JsonValue>, context: ReducerContext) => JsonValue;
export interface FunctionContext {
    current: JsonValue;
    params: Record<string, unknown>;
    root: JsonValue;
}
export interface ReducerContext {
    args: JsonValue[];
    params: Record<string, unknown>;
}
export interface CompiledQuery {
    ast: ProgramNode;
    evaluate(data: unknown, options?: EvaluationOptions): JsonValue;
    query(data: unknown, options?: EvaluationOptions): Iterable<QueryEntry>;
}
export declare function query(data: unknown, queryOrAst: ProgramNode | string, options?: EvaluationOptions): Iterable<QueryEntry>;
export declare function evaluate(data: unknown, queryOrAst: ProgramNode | string, options?: EvaluationOptions): JsonValue;
export declare function compile(source: string): CompiledQuery;
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