/**
 * Options for `getExpressionsPartialPrompt`.
 *
 * @example
 * const options: ExpressionsPromptOptions = { maxLength: 500 };
 */
export type ExpressionsPromptOptions = {
    /** The evaluator's `maxSourceLength`: the longest expression, in characters. Default 1000. */
    maxLength?: number;
    /** Your text, appended verbatim as a trailing `## Note`. */
    note?: string;
};
/**
 * The `# JavaScript Expressions` block: the language's rules, its globals and a few idioms. The globals and the
 * default length come from `@uicast/expr` itself.
 *
 * @example
 * getExpressionsPartialPrompt();
 *
 * @example
 * getExpressionsPartialPrompt({ maxLength: 500 }); // with new Evaluator({ maxSourceLength: 500 })
 */
export declare function getExpressionsPartialPrompt({ maxLength, note, }?: ExpressionsPromptOptions): string;