import { Environment } from '@marcbachmann/cel-js';
export interface CelFunctionParam {
    name: string;
    description?: string;
}
export interface CelFunctionRegistration {
    /** cel-js signature string, e.g. 'assetJson(string): dyn' */
    signature: string;
    handler: (...args: never[]) => unknown;
    description?: string;
    /** Parameter metadata surfaced by env.getDefinitions() (e.g. for UI palettes). */
    params?: CelFunctionParam[];
}
export interface EvaluateCelOptions {
    /** Extra functions registered for this evaluation only. */
    functions?: CelFunctionRegistration[];
}
/**
 * A fresh, extensible clone of the shared base CEL environment (trim, slice,
 * random, randomSample). Consumers may register additional functions on it.
 * Note: `exists()` is only available through `evaluateCel`, because it must
 * be bound to the evaluation's variables.
 */
export declare function createCelEnvironment(): Environment;
/**
 * Canonical CEL evaluation entry point shared by the backend, frontend,
 * and MCP server. Registers `exists(name)` bound to `variables`, plus any
 * per-call extra functions, then evaluates.
 *
 * If a registered handler is async, cel-js returns a Promise — use
 * `await evaluateCel<Promise<T>>(...)` in that case.
 *
 * `options.functions` must not redeclare a base function (trim, slice,
 * random, randomSample) or `exists` — cel-js throws on overlapping
 * signatures rather than overriding.
 */
export declare function evaluateCel<T = unknown>(expression: string, variables?: Record<string, unknown>, options?: EvaluateCelOptions): T;
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