import { LayoutRectangle } from "react-native";
export type TabLayoutMetrics = Record<number, Pick<LayoutRectangle, "x" | "width">>;
type TabLayouts = Map<number, LayoutRectangle> | TabLayoutMetrics;
type TabIdentity = {
    key?: string | number;
    id?: string | number;
};
export declare const getTabItemKey: (item: TabIdentity, index: number) => string;
export declare const serializeTopTabLayouts: (layouts: Map<number, LayoutRectangle>) => TabLayoutMetrics;
export declare const getLeftOffset: (index: number, layouts: TabLayouts, indicatorWidth: number, progressPercentage?: number) => number;
export {};
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