export type PackageJSON = Record<string, unknown> & {
    config?: {
        forge?: Record<string, unknown>;
    };
    dependencies?: Record<string, string>;
    devDependencies?: Record<string, string>;
};
export declare function runNPMInstall(dir: string, ...args: string[]): Promise<void>;
export declare function ensureModulesInstalled(dir: string, deps: string[], devDeps: string[]): Promise<void>;
export declare function ensureTestDirIsNonexistent(): Promise<string>;
export declare function expectLintToPass(dir: string): Promise<void>;
/**
 * Helper function to mock CommonJS `require` calls with Vitest.
 *
 * @see https://github.com/vitest-dev/vitest/discussions/3134
 * @param mockedUri - mocked module URI
 * @param stub - stub function to assign to mock
 */
export declare function mockRequire(mockedUri: string, stub: any): Promise<void>;
/**
 * Mutates the `package.json` file in a directory.
 * Use the return value to later restore the original `package.json` value
 * in a subsequent call of this function.
 *
 * @param dir - The target directory containing the `package.json` file
 * @param callback - A callback function that returns the value of the new `package.json` to be applied
 * @returns The original `package.json` prior to mutation
 */
export declare function updatePackageJSON(dir: string, callback: (packageJSON: PackageJSON) => Promise<PackageJSON>): Promise<any>;
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