feat (WIP): support Next.js 16 within component testing

[AtofStryker]

• Closes Support Next.js 16 for Component Testing #32857

Additional details

Adds component testing support for Next.js 16 (still needs tests). Based on the feedback in #32857, the underlying webpack implementation has changed slightly, where as an init() function no longer exists but invokes what we need on require().

Steps to test

How has the user experience changed?

PR Tasks

• Have tests been added/updated (WIP)?
• Has a PR for user-facing changes been opened in cypress-documentation?
• Have API changes been updated in the type definitions?

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Note

Adds Next.js 16 component testing support, updates scaffolding/docs, and adjusts CI filters.

• Component Testing (Webpack Dev Server):
  • Add Next.js 16 support in npm/webpack-dev-server/src/helpers/nextHandler.ts.
  • Handle Next ≥16 by skipping webpackModule.init() (init now runs on require) via semver check.
  • Normalize Webpack detection to v5 and adjust hasReactRoot check.
  • Refresh Next base webpack config option typing/comments for v14–v16.
• Scaffolding:
  • Include Next.js 16 in supported versions in packages/scaffold-config/README.md.
  • Extend WIZARD_DEPENDENCY_NEXT.minVersion to include ^16.0.0 in packages/scaffold-config/src/dependencies.ts.
• CLI Changelog:
  • Bump to 15.7.0 and note Next.js 16 component testing support in cli/CHANGELOG.md.
• CI:
  • Add branch filter feat/support_next_16 and artifact persistence handling in .circleci/src/pipeline/@pipeline.yml and workflows/@main.yml.

^{Written by Cursor Bugbot for commit cb3758a. This will update automatically on new commits. Configure here.}

[cursor]

Bug: Boolean Logic Fails with Undefined React Version

The hasReactRoot property is set to undefined when getReactVersion fails to find React, rather than false. The expression reactVersion && reactVersion >= 18 evaluates to undefined when reactVersion is undefined, which may cause unexpected behavior in Next.js webpack configuration that expects a boolean value. This should explicitly coerce to boolean using Boolean(reactVersion && reactVersion >= 18) or reactVersion ? reactVersion >= 18 : false.

 

[cypress]

cypress    Run #67360

Run Properties:   Failed #67360  •  cb3758a724: feat: support Next.js 16 inside component testing

Project	cypress
Branch Review	feat/support_next_16
Run status	Failed #67360
Run duration	21m 32s
Commit	cb3758a724: feat: support Next.js 16 inside component testing
Committer	Bill Glesias
View all properties for this run ↗︎

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Test results
Failures	2
Flaky	0
Pending	28
Skipped	0
Passing	793
View all changes introduced in this branch ↗︎

UI Coverage  61.84%
Untested elements	27
Tested elements	47

Accessibility  99%
Failed rules	0 critical   3 serious   1 moderate   0 minor
Failed elements	19

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Tests for review

  cypress\e2e\runner\ct-framework-errors.cy.ts • 2 failed tests • app-e2e

View Output

Test		Artifacts
Angular 18 > error conditions		Test Replay Screenshots
Angular 19 > error conditions		Test Replay Screenshots