import { FeatureLayerFieldFormatted } from '../../types';
/**
 * Determines if a field alias is valid based on the following criteria:
 * - `alias` must be present and non-empty.
 * - The trimmed, lowercased `alias` must not be empty.
 * - The trimmed, lowercased `alias` must not be identical to the trimmed, lowercased `name`.
 *
 * @param fieldInfo - The field information object containing `alias` and `name` properties.
 * @returns `true` if the alias is valid, otherwise `false`.
 */
export declare const isValidFieldAlias: (fieldInfo: FeatureLayerFieldFormatted) => boolean;
/**
 * Calculates the percentage of fields that have a valid alias.
 *
 * @param fields - An array of formatted feature layer fields to check.
 * @returns The percentage (as a number between 0 and 1) of fields with a valid alias.
 *          Returns 0 if the input array is empty, not an array, or undefined.
 */
export declare const getPercentOfValidFieldAliases: (fields: FeatureLayerFieldFormatted[]) => number;