/*!
 * Copyright (c) 2026-present, Okta, Inc. and/or its affiliates. All rights reserved.
 * The Okta software accompanied by this notice is provided pursuant to the Apache License, Version 2.0 (the "License.")
 *
 * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 * See the License for the specific language governing permissions and limitations under the License.
 */
/**
 * Checks that a value is a plain object, so its properties can be read and checked one at a time.
 */
export declare const isRecord: (value: unknown) => value is Record<string, unknown>;
/**
 * Checks that a value is a string or `undefined`, for optional message fields.
 */
export declare const isOptionalString: (value: unknown) => value is string | undefined;
/**
 * Creates a check that a value is one of a fixed list, such as a banner's severity.
 */
export declare const createIsOneOf: <Value extends string>(values: readonly Value[]) => (value: unknown) => value is Value;
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