Update to GraphQL Playground latest.

[abernix]

In addition to updating the @apollographql/graphql-playground-html fork,
which is necessary to avoid bundling graphql-config which had been
problematic in serverless environments, this updates the version number
which is served from the CDN.

I've just published @apollographql/graphql-playground-html@1.6.4.

Closes: #1746
Ref: apollographql/graphql-playground#2
Ref: apollographql/graphql-playground#1

Thanks for @javlund for kicking off some of this work!

[javlund]

@abernix Happy to help! :)

[abernix]

It's worth pointing out some subtle nuances in versioning between the various GraphQL Playground integrations (e.g. Electron, React, HTML) that might be interpreted incorrectly here. From best I can tell, this PR updates GraphQL Playground to the latest possible version for the needs of Apollo Server so I've updated the title of this PR accordingly. Here's a quick look at the graphql-playground repo's various versions:

$ ls -1 packages/*/package.json | xargs -tL1 jq .version
jq .version packages/graphql-playground-electron/package.json
"1.8.0"
jq .version packages/graphql-playground-html/package.json
"1.6.4"
jq .version packages/graphql-playground-middleware-express/package.json
"1.7.6"
jq .version packages/graphql-playground-middleware-hapi/package.json
"1.7.5"
jq .version packages/graphql-playground-middleware-koa/package.json
"1.6.6"
jq .version packages/graphql-playground-middleware-lambda/package.json
"1.7.6"
jq .version packages/graphql-playground-react/package.json
"1.7.8"

As noted above, we're using a fork of graphql-playground-html which removes the graphql-config dependency, but -html loads its assets from the graphql-playground-react version on jsDelivr's CDN, as seen in this code.

So the relevant versions from above are:

graphql-playground-html: 1.6.4

I published this as @apollographql/graphql-playground-html@1.6.4 yesterday.

graphql-playground-react: 1.7.8

This is the latest version, and this is loaded from the CDN based on the version we pass in from Apollo Server. This PR correctly changes that graphql-playground-react reference to 1.7.8:

apollo-server/packages/apollo-server-core/src/playground.ts

Line 12 in b08eb4a

const playgroundVersion = '1.7.8';

graphql-playground-electron: 1.8.0

This isn't actually relevant to Apollo Server at all, but I'm pointing it out because it's what their repository lists as the "latest" version on their releases page and it's worth demonstrating why the apparent version discrepancy exists, primarily for the sake of prosperity and the next person who updates this:

[abernix]

This should be released as 2.2.0-alpha.1! 🎉

[edarblanco]

My apologies in advance my native language is not english, I would like to know if it is possible or not to use offline playground, I did what I described here Apollo Offline and even then I do not get results, my apollo-server version is 2.3.1 and it was said that it would be for version 2.2 if I have skipped something, please light me, thank you