import { MaybeRefOrGetter, Ref } from 'vue';
/**
 * Limite le nombre de messages à `max` éléments.
 * Retourne le tableau inchangé si `max` est undefined ou <= 0.
 */
export declare function limitMessages(messages: string[], max?: number): string[];
/**
 * Déduplique et filtre les messages vides, puis limite le nombre.
 */
export declare function normalizeMessages(messages: string[], max?: number): string[];
/**
 * Fusionne des messages externes et internes en filtrant les messages vides,
 * en dédupliquant puis en limitant.
 */
export declare function mergeMessages(externalMessages: string[] | null | undefined, internalMessages: string[], max?: number): string[];
/**
 * Options pour `useDisplayMessages`.
 */
export interface UseDisplayMessagesOptions {
    errors: Ref<string[]>;
    warnings: Ref<string[]>;
    successes: Ref<string[]>;
    externalErrors?: MaybeRefOrGetter<string[] | null | undefined>;
    externalWarnings?: MaybeRefOrGetter<string[] | null | undefined>;
    externalSuccesses?: MaybeRefOrGetter<string[] | null | undefined>;
    maxErrors?: MaybeRefOrGetter<number | undefined>;
    hasErrorProp?: MaybeRefOrGetter<boolean | undefined>;
    hasWarningProp?: MaybeRefOrGetter<boolean | undefined>;
    hasSuccessProp?: MaybeRefOrGetter<boolean | undefined>;
    internalHasSuccess?: Ref<boolean>;
    disableErrorHandling?: MaybeRefOrGetter<boolean | undefined>;
}
/**
 * Composable qui calcule les messages d'affichage et les flags de priorité
 * (erreur > avertissement > succès) à partir d'états internes et externes.
 */
export declare function useDisplayMessages(options: UseDisplayMessagesOptions): {
    displayErrors: import('vue').ComputedRef<string[]>;
    displayWarnings: import('vue').ComputedRef<string[]>;
    displaySuccesses: import('vue').ComputedRef<string[]>;
    displayHasError: import('vue').ComputedRef<boolean>;
    displayHasWarning: import('vue').ComputedRef<boolean>;
    displayHasSuccess: import('vue').ComputedRef<boolean>;
};