import type { DisplayConfig } from './types';
declare const zero_line_keys: ("x_zero_line" | "y_zero_line" | "x2_zero_line" | "y2_zero_line")[];
type CategoryAxis = `x` | `y` | null;
type CategoryZeroKey = (typeof zero_line_keys)[number];
type CategoryZeroSyncState = {
    axis: CategoryAxis;
    disabled_keys: readonly CategoryZeroKey[];
    display?: DisplayConfig;
};
export declare const resolve_plot_display: (display: DisplayConfig, defaults: DisplayConfig, category_axis?: CategoryAxis) => DisplayConfig;
export declare const sync_category_zero_display: (display: DisplayConfig, defaults: DisplayConfig, category_axis: CategoryAxis, previous: CategoryZeroSyncState) => CategoryZeroSyncState;
export declare function create_category_display(display: () => DisplayConfig, category_axis: () => CategoryAxis): {
    readonly resolved: DisplayConfig;
};
export {};