@mark01/express-utils/lib/util/extract-header.js

npm package that contains utilities for express.js

import { z } from 'zod';
export const extractHeader = (request, headerName) => {
    const headerValue = request.headers[headerName];
    const validatedHeader = z.string().safeParse(headerValue);
    if (validatedHeader.success) {
        return validatedHeader.data;
    }
    return undefined;
};
export default extractHeader;