import { type UniversalTestContext } from './universal-test-context.js';
/**
 * An error that is thrown from {@link assertSnapshot} when the snapshot comparison fails due to the
 * snapshot expectation file simply not existing.
 *
 * @category Test : Util
 * @category Package : @augment-vir/test
 * @package [`@augment-vir/test`](https://www.npmjs.com/package/@augment-vir/test)
 */
export declare class SnapshotFileMissingError extends Error {
    constructor(testName: string);
}
/**
 * Assert that the given snapshot data matches already-saved snapshot file's expectations. Note that
 * the given data will be serialized into a JSON string if it is not already a string. This works in
 * both Node and web tests.
 *
 * Web tests require a web-test-runner config with the `snapshotPlugin` plugin from
 * `@virmator/test/dist/web-snapshot-plugin/web-snapshot-plugin.js` in order to work.
 *
 * @category Test
 * @category Package : @augment-vir/test
 * @package [`@augment-vir/test`](https://www.npmjs.com/package/@augment-vir/test)
 */
export declare function assertSnapshot(this: void, testContext: UniversalTestContext, data: unknown): Promise<void>;