mock-http/lib/append.js

mock http request response

'use strict'

/**
 * @module lib/append
 * @copyright 2014-present commenthol
 * @license MIT
 */

/**
 * Append a buffer/ string to an buffer
 *
 * @param {Buffer} buffer - buffer to append to
 * @param {Buffer|String} data - data to append
 * @param {String} [encoding] - encoding to use. Default='utf8'
 * @return {Buffer}
 */
function append (buffer, data, encoding) {
  if (data === undefined) {
    return buffer
  }
  return Buffer.concat([
    buffer || Buffer.from(''),
    (data instanceof Buffer ? data : Buffer.from(data.toString(encoding || 'utf8')))
  ])
}

module.exports = append