[JavaScript] v9

[lforst]

Topics for this major:

• Little actual breakage
• API cleanup
• Behavior cleanup

The items for this major can be found in #14224 (pre-work), #14225 (main work), #14288 (pre-release tasks) and #14226 (post-release tasks).

Stretch Goals

We also include some stretch goals that may get pulled into the major if we deem it valuable:

Stretch Goals

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1. Removing SyncPromise
2. Node stack filenames should be relative to app root #9072
   Meta: Breaking Type: Improvement +2
3. Look into using TS flag --isolatedDeclarations #13885
   +0
4. Update max. breadcrumb handling on scope #12399
   Migrated +1
5. Replace sucrase with swc
6. requestDataIntegration improvements
7. Replace instances of PromiseLike with Promise
8. Default attachStackTrace to true and add option to disable stack trace attachment for individual capture*() calls
9. Simplify multiplexed transport API (micro-frontends/module metadata) #11230
   Package: browser +1

Project Status

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Update 0 (Nov 4, 2024)

• Planning and pre-work has started

Update 1 (Dec 6, 2024)

• Pre-work is complete except for 1 small task.
• Last planned stable release coming early next week
• v9 branch opened and work has started
• Any stretch goals will likely not tackled
• OTEL has thrown in a wrench by planning to release a v2 major in Feb 2025, which means that we will delay some of the tasks until they have settled on certain decisions wrt version support. This may or may not push back the release timeline.

Update 2 (Jan 9, 2024)

• Pre-work complete
• Main work close to being finished
• Alpha release incoming either this week (Friday Jan 10, 2024) or early next week
• Movements with regards to Trace-Links and Trace Sampling have introduced extra work that is non-trivial. May push back the deadline.

Update 3 (Jan 22, 2024)

• Unplanned work for Prisma v6 and Deno have pushed back the deadline for the main work.
• Released first alpha.
• Next step is going to be dogfooding the alpha and writing migration docs and changelog.

[mydea]

Bump minimum Node.js version to 16+

IMHO we can also look into going to 18+. Lots of stuff depends on 18+ 🤔

[AbhiPrasad]

We should re-evaluate our current session code (both server-side with request mode sessions and client-side).

I think we have the opportunity to extract these into integrations to make it more modular, and allow for users to tree-shake out the logic if they don't want it (should save decent bundle size on browser).