Function getContentType

server/wrapResponse.js:1–11

(headers)

function getContentType(headers) {
  if(!headers) {
    return;
  }

  for(let key in headers) {
    if(key.toLowerCase() === "content-type") {
      return headers[key];
    }
  }
}

// Inspired by `resp-modifier` https://github.com/shakyShane/resp-modifier/blob/4a000203c9db630bcfc3b6bb8ea2abc090ae0139/index.js
function wrapResponse(resp, transformHtml) {