import "./funnel.css";
import type * as React from "react";
import { useRender } from "@base-ui/react/use-render";
import { type StyleProps } from "./style_props";
export interface FunnelStage {
    /** The React key and the `onSelect` value. */
    key: string;
    /** Top of funnel first. */
    label: string;
    /** Expected non-increasing. */
    value: number;
}
export interface FunnelProps extends StyleProps {
    /** Each bar is `value ÷ stages[0].value`, so the drop-off is the shape. */
    stages: FunnelStage[];
    /**
     * `vertical` (default): even columns, height ∝ value capped at `size`. `horizontal`: stacked
     * rows, width ∝ value.
     */
    orientation?: "vertical" | "horizontal";
    /** One accent: one cohort narrowing. Defaults to the sheet's neutral ink. */
    color?: string;
    /** Default `toLocaleString`. */
    formatValue?: (n: number) => string;
    /** Value ÷ the stage above. Default `"NN%"`; `null` hides it. */
    formatRate?: (rate: number) => string | null;
    /**
     * Pressing selects, pressing again clears; pair with `selectedKey`. The drill content is the
     * caller's.
     */
    onSelect?: (key: string | null) => void;
    /** The drilled stage, whose words take the accent. */
    selectedKey?: string | null;
    /** Omit inside a band that already names it. */
    title?: string;
    /** Defaults 160 (vertical height cap) / 28 (horizontal thickness). */
    size?: number;
    /** Passing one gives the block `role="group"`. */
    accessibilityLabel?: string;
    testID?: string;
    ref?: React.Ref<HTMLElement>;
    render?: useRender.RenderProp;
}
/**
 * Conversion funnel: bars sized against the top stage with each step's rate, so drop-off reads at a
 * glance. Nested shrinking cohorts, unlike a split `Progress` (a whole distributed across stages).
 * A drillable stage — its rate, its bar, its figure and name — is one toggle (`aria-pressed`).
 */
export declare function Funnel(props: FunnelProps): React.ReactElement<unknown, string | React.JSXElementConstructor<any>>;