import { vi } from 'vitest';
import { ECharts, EChartsOption } from 'echarts';
import { WidgetState, WidgetStoreApi } from './stores';
export interface MockChartHandlers {
    finished?: () => void;
    rendered?: () => void;
    click?: (params: unknown) => void;
    globalcursortaken?: (params: unknown) => void;
    datazoom?: (params: unknown) => void;
    brushselected?: (params: unknown) => void;
    brushend?: (params: unknown) => void;
    [key: string]: ((params?: unknown) => void) | undefined;
}
export interface MockChart {
    dispatchAction: ReturnType<typeof vi.fn>;
    setOption: ReturnType<typeof vi.fn>;
    getOption: ReturnType<typeof vi.fn>;
    resize: ReturnType<typeof vi.fn>;
    clear: ReturnType<typeof vi.fn>;
    dispose: ReturnType<typeof vi.fn>;
    isDisposed: ReturnType<typeof vi.fn>;
    getWidth: ReturnType<typeof vi.fn>;
    getHeight: ReturnType<typeof vi.fn>;
    getDom: ReturnType<typeof vi.fn>;
    on: (event: string, callback: (params?: unknown) => void) => void;
    off: (event: string, callback?: (params?: unknown) => void) => void;
    __handlers: MockChartHandlers;
    __emit: (event: keyof MockChartHandlers, params?: unknown) => void;
}
/**
 * Returns a duck-typed `ECharts` instance suitable for tests. The instance
 * captures `on()` handlers in `__handlers` so tests can `__emit('finished')`
 * directly, and all imperative methods (`dispatchAction`, `setOption`,
 * `resize`, …) are `vi.fn()` spies.
 */
export declare function createMockChart(): MockChart;
/** Convenience cast for tests that need an `ECharts`-typed reference. */
export declare const asEcharts: (chart: MockChart) => ECharts;
/**
 * Returns a `vi.fn()` option factory. The factory takes the standard
 * `(option, data, ctx)` signature and returns the supplied `output` unchanged.
 * Useful when the test only cares about how the bridge wires the factory in.
 */
export declare function createMockOptionFactory(output?: EChartsOption): import('vitest').Mock<() => EChartsOption>;
/**
 * Typed re-export of `getWidgetStore(id).getState()` — the verbose form
 * shows up dozens of times across the suite. Tests that need the store
 * api itself (`setState`, `subscribe`) still call `getWidgetStore(id)`.
 */
export declare function getState(id: string): WidgetState;
/** Typed re-export of `getWidgetStore(id)` for tests that need the api. */
export declare function getStore(id: string): WidgetStoreApi;