import type { ViewportRect, ViewportTransform } from './viewport.types.js';
export interface ViewportClientRect {
    readonly height: number;
    readonly left: number;
    readonly top: number;
    readonly width: number;
}
interface ViewportClientFrame {
    readonly left: number;
    readonly top: number;
}
export interface ViewportFitOptions {
    readonly inset?: number;
    readonly scale?: number;
}
/** Converts measurable client-space rectangles into their single content-space union. */
export declare function contentBoundsFromClientRects(clientRects: Iterable<ViewportClientRect>, viewportFrame: ViewportClientFrame, transform: ViewportTransform): ViewportRect | undefined;
/** Calculates the viewport transform that centers or fits a content-space region. */
export declare function revealTarget(region: {
    x: number;
    y: number;
    width?: number;
    height?: number;
}, configuration: {
    options: ViewportFitOptions;
    scaleRange: {
        min: number;
        max: number;
    };
    transform: ViewportTransform;
    viewport: {
        width: number;
        height: number;
    };
}): ViewportTransform;
export {};