/**
 * Humanize error objects with the following conditions:
 * - Keeps the output to a single line
 * - Maximum one level deep
 *
 * Example:
 * - Object `{ name: "Test" }` becomes string `name=Test` as all is the top level
 * - Object `{ one: { name: "Test" }}` becomes string `one={name=Test}` as one level deep is explored
 * - Object `{ one: { two: { name: "Test" }}}` becomes string `one={two=...}` as the max level deep is reached
 *
 * @param obj - input object to stringify
 * @param level - level of recursion, should start at 0
 * @returns a formatted String
 */
export declare function humanString(obj: any, level?: number): string;