index.js

'use strict'

const Client = require('./lib/dispatcher/client')
const Dispatcher = require('./lib/dispatcher/dispatcher')
const Pool = require('./lib/dispatcher/pool')
const Agent = require('./lib/dispatcher/agent')
const errors = require('./lib/core/errors')
const util = require('./lib/core/util')
const { InvalidArgumentError } = errors
const api = require('./lib/api')
const Readable = require('./lib/api/readable')
const buildConnector = require('./lib/core/connect')
const { getGlobalDispatcher, setGlobalDispatcher } = require('./lib/global')

Object.assign(Dispatcher.prototype, api)

module.exports.Dispatcher = Dispatcher
module.exports.Client = Client
module.exports.Pool = Pool
module.exports.Agent = Agent
module.exports.Readable = Readable

module.exports.cacheStores = {
  SqliteCacheStore: require('./lib/cache/sqlite-cache-store')
}

module.exports.buildConnector = buildConnector
module.exports.errors = errors
module.exports.util = {
  parseHeaders: util.parseHeaders,
  headerNameToString: util.headerNameToString,
  cache: require('./lib/util/cache')
}

function makeDispatcher (fn) {
  return (url, opts, handler) => {
    if (typeof opts === 'function') {
      handler = opts
      opts = null
    }

    if (!url || (typeof url !== 'string' && typeof url !== 'object' && !(url instanceof URL))) {
      throw new InvalidArgumentError('invalid url')
    }

    if (opts != null && typeof opts !== 'object') {
      throw new InvalidArgumentError('invalid opts')
    }

    if (opts && opts.path != null) {
      if (typeof opts.path !== 'string') {
        throw new InvalidArgumentError('invalid opts.path')
      }

      let path = opts.path
      if (!opts.path.startsWith('/')) {
        path = `/${path}`
      }

      url = new URL(util.parseOrigin(url).origin + path)
    } else {
      if (!opts) {
        opts = typeof url === 'object' ? url : {}
      }

      url = util.parseURL(url)
    }

    const { agent, dispatcher = getGlobalDispatcher() } = opts

    if (agent) {
      throw new InvalidArgumentError('unsupported opts.agent. Did you mean opts.client?')
    }

    return fn.call(dispatcher, {
      ...opts,
      origin: url.origin,
      path: url.search ? `${url.pathname}${url.search}` : url.pathname,
      method: opts.method || (opts.body ? 'PUT' : 'GET')
    }, handler)
  }
}

module.exports.setGlobalDispatcher = setGlobalDispatcher
module.exports.getGlobalDispatcher = getGlobalDispatcher

module.exports.request = makeDispatcher(api.request)