@okta/okta-auth-js/esm/browser/oidc/decodeToken.js

The Okta Auth SDK

/*!
 * Copyright (c) 2015-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.
 */

import AuthSdkError from '../errors/AuthSdkError.js';
import '../errors/WWWAuthError.js';
import { base64UrlToString } from '../crypto/base64.js';

function decodeToken(token) {
    var jwt = token.split('.');
    var decodedToken;
    try {
        decodedToken = {
            header: JSON.parse(base64UrlToString(jwt[0])),
            payload: JSON.parse(base64UrlToString(jwt[1])),
            signature: jwt[2]
        };
    }
    catch (e) {
        throw new AuthSdkError('Malformed token');
    }
    return decodedToken;
}

export { decodeToken };
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