test(use-cache): avoid bound capture ordering assumption

[james-elicx]

Summary

• fix the nested callable-cache production test that failed after feat(use-cache): support callable cached functions with rsc plugin api #2156 was squash-merged
• stop assuming the first encrypted binding in streamed Flight HTML belongs to the first rendered form
• resolve the expected captured value across both encrypted bindings before asserting its cache hit

Root cause

The runtime behavior is correct. The test rendered two differently bound cached functions but paired the first encrypted envelope with the first fixture value positionally. The squash merge changed generated module/reference ordering, so the first envelope decoded to the second fixture value and the assertion failed.

Failed main run: https://github.com/cloudflare/vinext/actions/runs/31342961567/job/93319976210

Validation

• vp test run tests/app-router-production-server.test.ts -t "resolves nested 'use cache' functions passed as props"
• vp check tests/app-router-production-server.test.ts

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@vinext/cloudflare@2845

npm i https://pkg.pr.new/create-vinext-app@2845

npm i https://pkg.pr.new/@vinext/types@2845

npm i https://pkg.pr.new/vinext@2845

commit: 96d4dcf

[github-actions]

Example	Preview	Production	Original
app-router-cloudflare	preview	production
pages-router-cloudflare	preview	production
app-router-playground	preview	production	original
realworld-api-rest	preview	production
nextra-docs-template	preview	production
benchmarks	preview	production
hackernews	preview	production	original
workers-cache	preview	production
web	preview	production

[github-actions]

Performance benchmarks

Compared 96d4dcf against base 373e826 using alternating same-runner rounds. Next.js was unchanged and skipped.

0 improved · 0 regressed · 6 within ±1.5%

Scenario	Framework	Baseline	Current	Change
Client bundle size (gzip)	vinext	134.7 KB	134.7 KB	⚫ -0.0%
Client entry size (gzip)	vinext	122.2 KB	122.2 KB	⚫ -0.0%
Dev server cold start	vinext	2.98 s	3.00 s	⚫ +0.7%
Production build time	vinext	3.27 s	3.28 s	⚫ +0.2%
RSC entry closure size (gzip)	vinext	114.3 KB	114.3 KB	⚫ -0.0%
Server bundle size (gzip)	vinext	191.9 KB	191.9 KB	⚫ -0.0%

View detailed results and traces

_{🟢 improvement · 🔴 regression · ⚫ change below 1.5% · paired base/head}