import { Serializable } from "../load/serializable.js";
import type { Example } from "../prompts/base.js";
/**
 * Base class for example selectors.
 */
export declare abstract class BaseExampleSelector extends Serializable {
    lc_namespace: string[];
    /**
     * Adds an example to the example selector.
     * @param example The example to add to the example selector.
     * @returns A Promise that resolves to void or a string.
     */
    abstract addExample(example: Example): Promise<void | string>;
    /**
     * Selects examples from the example selector given the input variables.
     * @param input_variables The input variables to select examples with.
     * @returns A Promise that resolves to an array of selected examples.
     */
    abstract selectExamples(input_variables: Example): Promise<Example[]>;
}