export declare const readYaml: (path: string) => any;
export declare const groupByAndPluckFirst: <T>(arr: T[], fn: (item: T) => string) => {
    [key: string]: T;
};
export declare const flattenKeyToProp: <T, U>(obj: {
    [key: string]: T;
} | undefined, prop: string) => U[];
export declare const addOneIndexedOrder: <T>(arr: T[]) => (T & {
    order: number;
})[];
/**
 * Convert an Error instance to a plain object, including all its non-iterable properties.
 * @param err Error to convert to Object
 * @returns Object representation of the error
 */
export declare const errToObj: (err: any) => any;