/*! @azure/msal-common v15.2.1 2025-03-11 */
'use strict';
import { createClientAuthError } from '../error/ClientAuthError.mjs';
import { hashNotDeserialized } from '../error/ClientAuthErrorCodes.mjs';

/*
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
/**
 * Parses hash string from given string. Returns empty string if no hash symbol is found.
 * @param hashString
 */
function stripLeadingHashOrQuery(responseString) {
    if (responseString.startsWith("#/")) {
        return responseString.substring(2);
    }
    else if (responseString.startsWith("#") ||
        responseString.startsWith("?")) {
        return responseString.substring(1);
    }
    return responseString;
}
/**
 * Returns URL hash as server auth code response object.
 */
function getDeserializedResponse(responseString) {
    // Check if given hash is empty
    if (!responseString || responseString.indexOf("=") < 0) {
        return null;
    }
    try {
        // Strip the # or ? symbol if present
        const normalizedResponse = stripLeadingHashOrQuery(responseString);
        // If # symbol was not present, above will return empty string, so give original hash value
        const deserializedHash = Object.fromEntries(new URLSearchParams(normalizedResponse));
        // Check for known response properties
        if (deserializedHash.code ||
            deserializedHash.error ||
            deserializedHash.error_description ||
            deserializedHash.state) {
            return deserializedHash;
        }
    }
    catch (e) {
        throw createClientAuthError(hashNotDeserialized);
    }
    return null;
}

export { getDeserializedResponse, stripLeadingHashOrQuery };
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