/**
 * Register the Stellar ECharts themes.
 * Call this once at application bootstrap (e.g., in a root provider or app initializer).
 *
 * Registers two themes:
 * - `stellar`      — light variant
 * - `stellar-dark` — dark variant
 */
export declare function registerStellarThemes(): void;
/**
 * Register ECharts themes for all color palettes (Stellar + non-Stellar).
 *
 * Non-Stellar palettes clone the Stellar light/dark base theme and only
 * replace the `color` array. This keeps axis, tooltip, and legend styling
 * consistent across all palettes.
 *
 * Theme naming convention:
 * - Light: `{paletteId}` (e.g., `spectrum`, `ocean`)
 * - Dark:  `{paletteId}-dark` (e.g., `spectrum-dark`, `ocean-dark`)
 */
export declare function registerAllPaletteThemes(): void;
/** Raw theme objects for testing or manual registration */
export declare const STELLAR_LIGHT_THEME: Record<string, unknown>;
export declare const STELLAR_DARK_THEME: Record<string, unknown>;