export interface JsPsychExtensionInfo {
    name: string;
}
export interface JsPsychExtension {
    /**
     * Called once at the start of the experiment to initialize the extension
     */
    initialize(params?: Record<string, any>): Promise<void>;
    /**
     * Called at the start of a trial, prior to invoking the plugin's trial method.
     */
    on_start(params?: Record<string, any>): void;
    /**
     * Called during a trial, after the plugin makes initial changes to the DOM.
     */
    on_load(params?: Record<string, any>): void;
    /**
     * Called at the end of the trial.
     * @returns Data to append to the trial's data object.
     */
    on_finish(params?: Record<string, any>): Record<string, any> | Promise<Record<string, any>>;
}