import { NullableDevkitMigration, UpgradeData } from '@angular/cdk/schematics';
import { Rule } from '@angular-devkit/schematics';
/** Upgrade data that will be used for the Angular Material ng-update schematic. */
export declare const upgradeData: UpgradeData;
export declare const customMigrations: NullableDevkitMigration[];
export default function (): Rule;