import { Tree } from '@nx/devkit';
/**
 * For gatsby app, replace gatsby-image with gatsby-plugin-image.
 * It updates the package names in package.json.
 * It uses gatsby-codemods to update imports.
 * It also add gatsby-plugin-image to project app's package.json and gatsby-config.js.
 */
export default function update(tree: Tree): Promise<import("@nx/devkit").GeneratorCallback>;