import { Transition } from 'd3-transition';
import { BaseType, Selection } from 'd3-selection';
import { ValueFn } from 'd3';
import { StyleDeclaration } from '../types/style';

export declare function smartTransition<Element extends BaseType, Datum, ParentElement extends BaseType, ParentDatum>(selection: Selection<Element, Datum, ParentElement, ParentDatum>, duration?: number, easing?: (normalizedTime: number) => number): Selection$Transition<Element, Datum, ParentElement, ParentDatum>;
/** Applies an object of inline styles to every node of a selection, converting camelCase keys
 * to kebab-case. Keys applied on a previous call but absent from the current object (or set
 * to `null`/`undefined`) are removed, so per-datum styles clean up after themselves.
 * Keys listed in `skipKeys` are ignored — useful when a component manages some of them itself. */
export declare function applyInlineStyles<GElement extends BaseType, Datum, PElement extends BaseType, PDatum>(selection: Selection<GElement, Datum, PElement, PDatum>, getStyles: (d: Datum, i: number) => StyleDeclaration | null | undefined, skipKeys?: ReadonlySet<string>): void;
export interface VisAttrStylePatch<GElement extends BaseType, Datum, PElement extends BaseType, PDatum> {
    attr(name: string, value: null | string | number | boolean): this;
    attr(name: string, value: ValueFn<GElement, Datum, string | number | boolean | null>): this;
    style(name: string, value: null): this;
    style(name: string, value: string | number | boolean, priority?: null | 'important'): this;
    style(name: string, value: ValueFn<GElement, Datum, string | number | boolean | null>, priority?: null | 'important'): this;
}
export type Selection$Transition<Element extends BaseType, Datum, ParentElement extends BaseType, ParentDatum> = (Transition<Element, Datum, ParentElement, ParentDatum> | Selection<Element, Datum, ParentElement, ParentDatum>) & VisAttrStylePatch<Element, Datum, ParentElement, ParentDatum>;