fix: update to support hapi 17 (graphql#396)

* fix: update to support hapi 17

Updated plugin definition to support hapi 17. Please see the following for more information on the changes between hap 16 and 17:

https://futurestud.io/tutorials/hapi-v17-upgrade-guide-your-move-to-async-await
https://hapijs.com/api#plugins

Updated the example project to use hapi 17, including dependencies.

* v2.0.1

* v2.0.2

* v2.0.3

* v2.0.4

* v2.0.5

* wip: hapi-17-update fixes

Work in progress commit for review + feedback.

* refactor: get middleware version from package.json, example use local

Made changes requested by @timsuchanek

Plugin now uses key `playgroundVersion` in `package.json` to get middleware version from jsdelivr.

Examples/basic now uses the local version of the middleware as built with `yarn build` located in `dist`. Removed dependency from example `package.json`, as it is no longer used.

Set example version to `2.0.0` as it now uses Hapi 17.

Updated middleware dependencies to reflect those of the current version. Middleware version number will need to be bumped to a new major version for the next release, as it will not be backwards compatible with Hapi 16.

TODO: Update readme to direct users to use the last stable version supporting Hapi 16 if they don't wish to upgrade.

Author: Drake Costa

packages/graphql-playground-middleware-hapi/examples/basic/README.md

@@ -1,5 +1,7 @@
 # GraphQL Playground Hapi Example
 
+> Note: `graphql-playground-middleware-hapi` @^2.0.0 requires `hapi` 17, for `hapi` 16 please use @^1.3.6
+
 ```sh
 $ yarn
 $ node index.js

packages/graphql-playground-middleware-hapi/examples/basic/index.js

@@ -1,13 +1,17 @@
 const hapi = require('hapi')
 const { graphqlHapi } = require('apollo-server-hapi')
-const hapiPlayground = require('../../src/index').default
+const hapiPlayground = require('../../dist').default
 const { makeExecutableSchema } = require('graphql-tools')
 
-const server = new hapi.Server({ debug: { request: '*' } })
-
 const HOST = 'localhost'
 const PORT = 4000
 
+const server = new hapi.Server({
+  host: HOST,
+  port: PORT,
+  debug: { request: '*' }
+})
+
 const schema = makeExecutableSchema({
   typeDefs: `
     type Query {
@@ -24,13 +28,8 @@ const schema = makeExecutableSchema({
   },
 })
 
-server.connection({
-  host: HOST,
-  port: PORT,
-})
-
-server.register({
-  register: graphqlHapi,
+const api = {
+  plugin: graphqlHapi,
   options: {
     path: '/graphql',
     graphqlOptions: {
@@ -40,19 +39,30 @@ server.register({
       cors: true,
     },
   },
-})
+}
 
-server.register({
-  register: hapiPlayground,
+const playground = {
+  plugin: hapiPlayground,
   options: {
     path: '/playground',
     endpoint: '/graphql',
   },
-})
+}
 
-server.start(err => {
-  if (err) {
-    throw err
+const plugins = [
+  api,
+  playground,
+]
+
+async function start() {
+  console.log(`Setting up server...`)
+  try {
+    await server.register(plugins)
+    await server.start()
+    console.log(`Server running at: ${server.info.uri}`)
+  } catch (err) {
+    console.log(`Failed to start server!`, err)
   }
-  console.log(`Server running at: ${server.info.uri}`)
-})
+}
+
+start()