/**
 * Copyright (c) 2025, WSO2 LLC. (https://www.wso2.com).
 *
 * WSO2 LLC. licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except
 * in compliance with 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.
 */
/**
 * Processes OpenID scopes to ensure they are in the correct format.
 * If the input is a string, it returns it as is.
 * If the input is an array, it joins the elements into a single string separated by spaces.
 * If the input is neither, it throws an error.
 *
 * Default scopes are only injected when no scopes are configured (undefined, empty string,
 * or empty array). If the caller explicitly provides scopes, those are used as-is.
 *
 * @param scopes - The OpenID scopes to process, which can be a string, an array of strings,
 *   or undefined/null when not configured.
 * @returns A string of OpenID scopes separated by spaces.
 *
 * @example
 * ```typescript
 * processOpenIDScopes("openid profile email"); // returns "openid profile email"
 * processOpenIDScopes(["openid", "profile", "email"]); // returns "openid profile email"
 * processOpenIDScopes(undefined); // returns default scopes
 * processOpenIDScopes(123); // throws AsgardeoRuntimeError
 * processOpenIDScopes({}); // throws AsgardeoRuntimeError
 * ```
 */
declare const processOpenIDScopes: (scopes: string | string[] | undefined | null) => string;
export default processOpenIDScopes;
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