/**
 * Keeps our on-page dev UI (HMR indicator, source-overlay tooltip) clear of the
 * Vite DevTools edge panel so they don't sit on top of it.
 *
 * The panel is `#devframes-edge-panel` inside the open shadow root of the
 * `<devframes-dock-embedded>` host (`#vite-devtools-edge-panel` in
 * `<vite-devtools-dock-embedded>` before Vite DevTools moved onto devframes),
 * and only exists while the dock is docked to an edge (it can be
 * moved/resized). We report the inset, in px, that the panel occupies on each
 * viewport edge it touches — plus a small gap — so callers can offset
 * themselves.
 */
export interface EdgeInsets {
    top: number;
    right: number;
    bottom: number;
    left: number;
}
/**
 * Calls `onChange` with the current insets and again whenever they change — the
 * panel being docked/resized/moved, the window resizing, or the devtools
 * mounting after us. Returns a disposer.
 */
export declare const observeEdgeInsets: (onChange: (insets: EdgeInsets) => void) => (() => void);
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