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MIGRATION-V5.md

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Migration from v5

LeagueConnect version 6 has changed a lot of the core APIs available, causing backwards incompatability which requires us to bump the version to 6.

Migrating from fetch to node http

v6 removes the external dependency of node-fetch, and makes use of node's own http and http2 libraries. This means the response type returned from the request methods have changed.

For backwards compatability, we have preserved ok, status, redirected fields and the json() method on the Http1Response and Http2Response classes.

request() has been renamed and migrated to createHttp1Request, but the options are the same. Insted of returning an augmented Fetch response, this function now returns a Http1Response.

If you do not wish to/don't have time to rewrite code to use createHttp1Request, you can access DEPRECATED_request until version 7.0.0

// previously
const credentials = await authenticate()
const response = await request({
  method: 'GET',
  url: '/lol-summoner/v1/current-summoner'
}, credentials)
const json = await response.json()

// now, using createHttp1Request
const credentials = await authenticate()
const response = await createHttp1Request({
  method: 'GET',
  url: '/lol-summoner/v1/current-summoner'
}, credentials)
const json = response.json() // notice the no await here

Accessing headers is now done through response.message.headers as this is a delegation to Node.js http headers.

HTTP 2

Version 6 also features requests through HTTP/2.0. This is done with the createHttp2Request and createHttpSession functions.

const credentials = await authenticate()
const session = createHttpSession(credentials)
const response = createHttp2Request({
  method: 'GET',
  url: '/lol-summoner/v1/current-summoner'
}, session, credentials)
// remember to always close the session
session.close()

Automatic re-try attempts for WebSocket connection

The WebSocket connect() function has been replaced with the new createWebSocketConnection function which allows the user to have the library re-try to connect to the WebSocket. This was done to resolve issue junlarsen#56

The connect function no longer requires the user to provide credentials, as this was unnecessary and reported in junlarsen#55. Instead, the user must pass in authentication options that the createWebSocketConnection function will use to connnect (re-try connection with).

// previously
const credentials = await authenticate()
const ws = await connect(credentials)

ws.on('message', message => {
  // Subscribe to any websocket event
})

// now, with createWebSocketConnection
const ws = createWebSocketConnection({
  authenticationOptions: {}
})

ws.on('message', message => {
  // Subscribe to any websocket event
})