import type { PackageJson } from "type-fest";
export declare function isV1Addon(packageJson: EmberPackageJson): boolean;
export declare function isV2Addon(packageJson: EmberPackageJson): boolean;
export declare function readPackageJson<ReturnType = PackageJson>(packagePath: string): Promise<ReturnType>;
export type EmberPackageJson = PackageJson & {
    "ember-addon"?: {
        version?: 1 | 2;
    };
};
export type { PackageJson };