har-to-k6/src/render/header.js

Convert LI-HAR to k6 script

const note = require('./note/items')
const text = require('./text')

function header(name, items) {
  items = [...items]
  return {
    name,
    value: value(items),
    comment: note(items),
  }
}

function value(items) {
  /*
   * Concatenate values comma separated
   *
   * Supports multivalue headers through the k6 single value interface.
   * Responsibility of the user to only specify multiple values where valid.
   *
   * Per RFC 2616:
   * https://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
   * It MUST be possible to combine the multiple header fields into one
   * "field-name: field-value" pair, without changing the semantics of the
   * message, by appending each subsequent field-value to the first, each
   * separated by a comma.
   */
  const values = items.map((item) => item.value || '')
  return text(values, ',')
}

module.exports = header