Function parseRawHeaders

lib/core/util.js:470–512

* @param {Buffer[] | string[] | Record | null | undefined} headers * @returns {string[]}

(headers)

 * @returns {string[]}
 */
function parseRawHeaders (headers) {
  if (headers == null) {
    return []
  }

  if (!Array.isArray(headers)) {
    const rawHeaders = []

    for (const [name, value] of Object.entries(headers)) {
      if (Array.isArray(value)) {
        for (const entry of value) {
          rawHeaders.push(name, `${entry}`)
        }
      } else {
        rawHeaders.push(name, `${value}`)
      }
    }

    return rawHeaders
  }

  const headersLength = headers.length
  /**
   * @type {string[]}
   */
  const ret = new Array(headersLength)

  let key
  let val

  for (let n = 0; n < headersLength; n += 2) {
    key = headers[n]
    val = headers[n + 1]

    typeof key !== 'string' && (key = key.toString())
    typeof val !== 'string' && (val = val.toString('latin1'))

    ret[n] = key
    ret[n + 1] = val
  }

  return ret
}

/**
 * @param {Record<string, string | string[]>} headers