export function convertResponseHeaders(headers) {
    const output = {};
    for (const key of headers.keys()) {
        output[key] = headers.get(key);
    }
    return output;
}
export function mergeHeaders(...headerPayloads) {
    if (headerPayloads.length === 0)
        return {};
    const headerKeys = {};
    return headerPayloads.reduce((output, headers) => {
        Object.keys(headers).forEach(header => {
            const lowerHeader = header.toLowerCase();
            if (headerKeys.hasOwnProperty(lowerHeader)) {
                output[headerKeys[lowerHeader]] = headers[header];
            }
            else {
                headerKeys[lowerHeader] = header;
                output[header] = headers[header];
            }
        });
        return output;
    }, {});
}