export interface LabelCandidate {
    id: string | number;
    text: string;
    x: number;
    y: number;
    width: number;
    height: number;
    priority: number;
    collisionMode: "auto" | "always" | "hide";
    kind: "label" | "icon";
}
export interface LabelLayoutResult {
    visible: LabelCandidate[];
    hidden: LabelCandidate[];
}
/**
 * Viewport declutter shared by ObjectManager labels/icons.
 * Higher priority wins; ties use stable id order.
 */
export declare function layoutObjectLabels(candidates: LabelCandidate[], options?: {
    padding?: number;
    maxLabels?: number;
}): LabelLayoutResult;
export declare function measureLabelText(ctx: CanvasRenderingContext2D, text: string, font: string): {
    width: number;
    height: number;
};
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