Function headersArrayToObject

lib/common.js:192–204

* Converts an array of raw headers to an object, using the same rules as Nodes `http.IncomingMessage.headers`. * * Header names/keys are lower-cased.

(rawHeaders)

 * Header names/keys are lower-cased.
 */
function headersArrayToObject(rawHeaders) {
  if (!Array.isArray(rawHeaders)) {
    throw Error('Expected a header array')
  }

  const accumulator = {}

  forEachHeader(rawHeaders, (value, fieldName) => {
    addHeaderLine(accumulator, fieldName, value)
  })

  return accumulator
}

const noDuplicatesHeaders = new Set([
  'age',