import { ApiNode } from "./apiNode";
import { Interval } from "./scale/interval";
import { Position } from "./styles";
export interface ComputePositionArguments {
    node: ApiNode;
    initial: Position;
    i: number;
}
export type ComputePosition = (args: ComputePositionArguments) => Position;
export type ComputeValues<T> = () => T[];
export type ComputeChannelValues<K, V> = (key: K) => V[];
export declare class Channel<T extends number> {
    private computeValues;
    constructor(computeValues: ComputeValues<T>);
    get domain(): Interval;
    get values(): T[];
}
export type DynamicChannels<K extends string, V extends number> = Record<K, Channel<V>>;
/**
 * Lazy channels are properties of a LayoutContext which are computed on demand.
 * Layouts can optionally use these to fetch initial positions or values of properties.
 */
export declare function lazyChannels<K extends string, V extends number>(values: ComputeChannelValues<K, V>): DynamicChannels<K, V>;