type MapOptions = {
    /**
     * Automatically trim all string values
     * (default=false)
     * eg: join([' hello   ', ' world '], {valtrim: true}) -> 'hello world'
     */
    valtrim?: boolean;
    /**
     * Automatically round all numeric values
     * (default=false)
     * eg: mapPrimitive([5.432, 5.4, 5.43, 4.2, 4.1], {valround: true}) -> {'5.432': 5, '5.4': 5, '5.43': 5, '4.2': 4, '4.1': 4}
     * eg: mapPrimitive([5.432, 5.43, 4.21, 4.1], {valround: 1}) -> {'5.432': 5.4, '5.43': 5.4, '4.21': 4.2, '4.1': 4.1}
     */
    valround?: boolean | number;
    /**
     * Automaticaly round all keys from numeric values
     * (default=false)
     * eg: mapPrimitive([5.432, 5.4, 5.43, 4.2, 4.1], {keyround: true}) -> {5: 5.43, 4: 4.1}
     */
    keyround?: boolean;
    /**
     * Pass a custom filter function which will be run in O(n) while iterating
     */
    filter_fn?: (el: unknown) => boolean;
};
type mapReturn = Record<string, string | number>;
/**
 * Map an array of primitive values (numbers/strings) into a kv-object
 * non-numeric and non-string values will be filtered out
 *
 * Example:
 *  mapPrimitive(['hello', 'hello', 'foo', 'bar']);
 * Output:
 *  {hello: 'hello', foo: 'foo', bar: 'bar'}
 *
 * @param {unknown[]} val - Array to map
 * @param {MapOptions?} opts - Options object to override built-in defaults
 */
declare function mapPrimitive(arr: unknown[], opts?: MapOptions): mapReturn;
export { mapPrimitive, mapPrimitive as default };