WIP: Update playground dependencies to v0.9.X

[sejas]

What?

Let's update Playground dependencies to the latest version.

We may need to update other projects like Playground Plugin.

Why?

It will fix WBEP images, support curl and other fixes features introduced in these versions.

How?

• We need to update the dependencies and adapt the breaking changes to use the new functions.

Testing Instructions

• Run npx nx build wp-now && node dist/packages/wp-now/cli.js start
• Observe Playground opens correctly in the browser.

[swissspidy]

Would love to be able to use the new version via wp-now 😊

[eliot-akira]

I wanted to contribute to this pull request, and have started looking at what's needed to update Playground dependencies from 0.6.16 (current) to 0.9.31 (newest). I can try working on this if you could advise/review? @sejas @adamziel

---

After installing the new versions, there are 29 failing tests. From the error messages and studying the code/tests of PHP-WASM modules, I learned a few things.

• Use PHP class from @php-wasm/universal instead of NodePHP from @php-wasm/node, which no longer exists. Breaking: PHP: Remove NodePHP and WebPHP classes in favor of a single "PHP" class wordpress-playground#1457
• Use PHPRequestHandler and let it manage PHP instances
• Use createNodeFsMountHandler to mount the file system with Node-specific adaptor

My fork of this PR branch shows the progress so far.

update/playground-dependencies...eliot-akira:playground-tools:update/playground-dependencies

(I wasn't sure if I should create a new pull request, or if this current PR can have multiple authors. I'm guessing the latter is not possible since I don't have write access to the PR branch, update/playground-dependencies.)

---

The tests run a little further now (25 fails) but php.mount() is not working yet. It throws:

ErrnoError {
  name: 'ErrnoError',
  errno: 44,
  stack: '<generic error, no stack>'
}

One thing I noticed is, the php.mount() method is async (defined here in @php-wasm/universal) and I'm awaiting it - but elsewhere it's being used, like in this test for @php-wasm/node, it's always called without await.

---

There are a couple places where the code was previously applying a callback to all PHP instances, but the new PHPRequestHandler.processManager doesn't provide access to them. PHPProcessManager.allInstances is a private property, probably for a good reason - maybe it's no longer necessary (or possible) to manage the instances manually.

---

During the process I learned about Playground CLI (WordPress/wordpress-playground#1289) and the new Boot Protocol (WordPress/wordpress-playground#1390). I can see these are generalizing and modularizing some features of wp-now, as well as parts of the build process for the Playground itself.

The @wp-playground/cli module and bootWordPress() are good up-to-date references of how to use the PHP class properly. I'm comparing it with wp-now to understand what needs to be updated.

[adamziel]

@eliot-akira AFAIR you got all the major changes right. Here's a major non-breaking change that could help with managing workers:

WordPress/wordpress-playground#1669

[eliot-akira]

Thank you, I'll keep chipping away at this. I've continued studying the source of @php-wasm/node, universal, and @wp-playground/wordpress. I think I can eventually figure out how to update wp-now and pass all existing tests.

[eliot-akira]

OK, I got it down to 3 failing tests.

I created a new pull request from my forked branch, since the scope is narrower than this one (update wp-now only instead of all packages in playground-tools) and I wanted to show the test error messages.

• wp-now: Update Playground and PHP WASM dependencies #350

[sejas]

Great work @eliot-akira ! 🙌 , thanks for helping on this. I'm back from holidays and catching up. I'll review the PR in the next days.
The team has also updated the dependencies for Studio: Automattic/studio#491