proxyHeaders.js

function getProperty(target, prop) {
    if (typeof prop === "string") {
        for (const [name, value] of Object.entries(target)) {
            if (prop.toLowerCase() === name.toLowerCase()) {
                return value;
            }
        }
    }
    return undefined;
}
export const proxyHeaders = (object) => new Proxy(object, {
    get: (target, prop) => getProperty(target, prop),
    has: (target, prop) => getProperty(target, prop) !== undefined
});