/**
 * With two value axes on a chart the question is which series is read off
 * which one. An axis answers it with `keys`: the value fields (or series ids)
 * it carries. Everything unclaimed goes to the first axis that asked for
 * nothing in particular — so a single-axis chart never notices any of this.
 */
/** What the binding needs to know about a series. */
export interface BindableSeries {
    readonly id: string;
    axisKeys?(): string[];
}
/** What it needs to know about a value axis. */
export interface BindableAxis {
    readonly keys?: readonly string[];
}
/**
 * Maps series id → the value axis it is drawn against. Axes are matched in
 * declaration order; a series matching none of the `keys` falls back to the
 * first axis without keys, and failing that to the first axis at all.
 */
export declare function bindSeriesToValueAxes<S extends BindableSeries, A extends BindableAxis>(series: S[], axes: A[]): Map<string, A>;