[Beta] fix(sandpack): revert minimal babel implementation

[danilowoz]

Unfortunately, I'm reverting the minimal babel implementation made on #5164, as it proves that unhandled custom plugins like dynamic imports and others we're not aware of. So, here's the plan:

1. Rollback immediately in order to fix the issues;
2. Sucrase: we've been playing with it a bit, and we're looking forward to implementing the missing pieces to replace Babel (which is huge) with Sucrase. We can't make any promises, but we're actively working on it, and we can expect something soon;

@gaearon, I think we should merge this asap.

Fix #5244, fix #5241

[github-actions]

Size Changes

📦 Next.js Bundle Analysis

This analysis was generated by the next.js bundle analysis action 🤖

🎉 Global Bundle Size Decreased

Page	Size (compressed)
global	89.02 KB (-1 B)

Details

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[gaearon]

Does this revert Babel alone, or also the caching improvements?

[danilowoz]

It only reverts the Babel configuration. All the cache optimization and other improvements are still working