@graphql-mesh/plugin-serialize-headers/esm/index.js

export default function useMeshSerializeHeaders(options) {
    const map = {};
    for (const headerName of options.names) {
        map[headerName.toLowerCase()] = headerName;
    }
    function headersSerializer(headers) {
        const headersObj = {};
        for (const [key, value] of headers) {
            const finalKey = map[key] ?? key;
            headersObj[finalKey] = value;
        }
        return headersObj;
    }
    return {
        onFetch({ options }) {
            options.headersSerializer = headersSerializer;
        },
    };
}