import { Edge } from '../types/Edge';
import { Link } from '../renderables/Link';
import { Labeller } from './Labeller';
declare type LabelPlacement = 'center' | 'join' | 'spread';
declare class LinkLabeller extends Labeller {
    private _linkMap;
    private _placement;
    constructor();
    getPlacement(): LabelPlacement;
    setLinkMap(links: Map<Link, Edge[]>): void;
    setPlacement(placement: LabelPlacement): void;
    update(): void;
    _bezierBounds(np: number): [number, number];
    _buildCenterLabels(): void;
    _buildJoinLabels(): void;
    _buildSpreadLabels(): void;
}
export { LabelPlacement, LinkLabeller };