@nrwl/workspace/src/utilities/executor-options-utils.d.ts

import { Tree } from '@nrwl/devkit';
/**
 * Calls a function for each different options that an executor is configured with
 */
export declare function forEachExecutorOptions<Options>(tree: Tree, 
/**
 * Name of the executor to update options for
 */
executorName: string, 
/**
 * Callback that is called for each options configured for a builder
 */
callback: (currentValue: Options, project: string, target: string, configuration?: string) => void): void;