import { Theme } from '@mui/material/styles';
/**
 * Theme factory and getters for ChartPie options tests.
 */
/**
 * Creates a theme-like object for ECharts options tests.
 */
export declare function createTheme(overrides?: Record<string, unknown>): {
    vars: {
        palette: {
            text: {
                primary: string;
                disabled: string;
                contrastText: string;
            };
            background: {
                base: string;
                default: string;
                neutral: string;
            };
            border: {
                disabled: string;
            };
        };
    };
};
/**
 * Theme ready to pass to generateOptions (typed for tests).
 */
export declare function getThemeForOptions(overrides?: Record<string, unknown>): Theme;
/**
 * Empty theme for testing theme fallbacks in generateOptions.
 */
export declare const emptyTheme: Theme;
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