/**
 * Folds fields using a regex
 *
 * See: https://vega.github.io/vega/docs/transforms/fold/
 */
export default class RegexFoldTransform extends Transform {
    /**
     * @param {import("../../spec/transform.js").RegexFoldParams} params
     */
    constructor(params: import("../../spec/transform.js").RegexFoldParams);
    params: import("../../spec/transform.js").RegexFoldParams;
    handle: (datum: any) => void;
}
import Transform from "./transform.js";
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