import * as libCoverage from 'istanbul-lib-coverage';
import type { InjectedSinks, BundleOptions, WorkerOptions } from '@temporalio/worker';
import type { CoverageSinks } from './sinks';
type WebpackConfigType = ReturnType<NonNullable<BundleOptions['webpackConfigHook']>>;
export declare class WorkflowCoverage {
    coverageMapsData: libCoverage.CoverageMapData[];
    private hasCoverageGlobal;
    /**
     * Add all necessary coverage-specific logic to Worker config:
     * interceptors, sinks, and Webpack config hook.
     */
    augmentWorkerOptions(workerOptions: WorkerOptions & {
        workflowsPath: NonNullable<WorkerOptions['workflowsPath']>;
    }): WorkerOptions;
    /**
     * Add all necessary coverage-specific logic to bundle config:
     * interceptors and Webpack config hook.
     * The end user is still responsible for adding sinks to the worker options!
     */
    augmentBundleOptions(bundleOptions: BundleOptions & {
        workflowsPath: NonNullable<WorkerOptions['workflowsPath']>;
    }): BundleOptions;
    /**
     * Add sinks to Worker options. Use this method if you are passing a pre-built
     * bundle that was built with `augmentBundleOptions()`.
     */
    augmentWorkerOptionsWithBundle(workerOptions: WorkerOptions & {
        workflowBundle: NonNullable<WorkerOptions['workflowBundle']>;
    }): WorkerOptions;
    /**
     * Interceptor to inject into `WorkerOptions.interceptors.workflowModules`
     */
    get interceptorModule(): string;
    /**
     * Contains sinks that allow Workflows to gather coverage data.
     */
    get sinks(): InjectedSinks<CoverageSinks>;
    /**
     * Modify the given Worker config to auto instrument Workflows
     */
    addInstrumenterRule(config: WebpackConfigType): WebpackConfigType;
    /**
     * Merge this WorkflowCoverage's coverage map into the global coverage
     * map data `global.__coverage__`.
     */
    mergeIntoGlobalCoverage(): void;
}
export {};