import * as d3 from "d3";
/**
 * Coerce possibly external d3 instance into our own instance of d3 so we can use d3-selection-multi.
 * See https://github.com/d3/d3-selection-multi/issues/11 for why we have to do this.
 *
 * Any public facing API that accepts a d3 selection should first pass that user-supplied selection
 * through here - this ensures all selection objects that go through the Plottable codebase are "vetted".
 */
export declare function coerceExternalD3<S extends d3.Selection<any, any, any, any>>(externalD3Selection: S): S;