import type { CdkTestAppOptions } from './cdk-test-app';
import type { Diagnostic, DestructiveChange, SnapshotVerificationOptions } from '../workers/common';
type RunnerOptions = Omit<CdkTestAppOptions, 'outputDirectoryNameTemplate' | 'region'> & {
    /**
     * Only used for testing
     */
    readonly TESTING_compareAgainstDirectory?: string;
};
export type SnapshotResult = {
    type: 'no-shapshot';
} | {
    type: 'did-compare';
    diagnostics: Diagnostic[];
    destructiveChanges: DestructiveChange[];
};
/**
 * Runner for snapshot tests. This handles orchestrating
 * the validation of the integration test snapshots
 */
export declare class IntegSnapshotRunner {
    private readonly options;
    private readonly test;
    constructor(options: RunnerOptions);
    /**
     * Synth the CDK app and compare the templates to the existing snapshot.
     *
     * @returns any diagnostics and any destructive changes
     */
    testSnapshot(options?: SnapshotVerificationOptions): Promise<SnapshotResult>;
    /**
     * For a given stack return all resource types that are allowed to be destroyed
     * as part of a stack update
     *
     * @param stackId - the stack id
     * @returns a list of resource types or undefined if none are found
     */
    private getAllowedDestroyTypesForStack;
    /**
     * Find any differences between the existing and expected snapshots
     *
     * @param existing - the existing (expected) snapshot
     * @param actual - the new (actual) snapshot
     * @returns any diagnostics and any destructive changes
     */
    private diffAssembly;
    /**
     * Reduce template to a normal form where asset references have been normalized
     *
     * This makes it possible to compare templates if all that's different between
     * them is the hashes of the asset values.
     */
    private canonicalizeTemplate;
}
export {};
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