Server-side coverage not reported when using next.js

使用链接的 proof-of-concept 运行 npm install、npm run dev 和 Cypress 命令来复现报告，然后检查 pages/index.tsx 和 no-coverage-here/some-file.ts。比较 npm run see-cy-coverage 之后生成的 coverage 输出；完成的标准是，被调用的 server-side 文件报告的是其已执行的 coverage，而不是 0/0。

Proof of concept repository: https://github.com/romandecker/next-ts-with-cypress-coverage

Steps to reproduce:

1. npm install
2. npm run dev
3. In another terminal: DEBUG=code-coverage npm run cypress run
4. npm run see-cy-coverage and verify that getServerSideProps() in pages/index.tsx was called and coverage was tracked successfully, but the function it calls, in no-coverage-here/some-file.ts still shows up as having 0% coverage, even though it was clearly executed.

Logs and screenshots

> [email protected] cypress
> cypress "run"

Missing baseUrl in compilerOptions. tsconfig-paths will be skipped
  code-coverage combined NYC options { 'report-dir': 'cypress-coverage', reporter: [ 'json', 'lcov' ], extension: [ '.js', '.jsx', '.ts', '.tsx' ], excludeAfterRemap: false, extends: './.nycrc.json', include: [ 'pages/**/*', 'no-coverage-here/**/*' ], exclude: [ 'pages/api/__coverage__.js' ], all: true, sourceMap: true, instrument: true } +0ms

====================================================================================================

  (Run Starting)

  ┌────────────────────────────────────────────────────────────────────────────────────────────────┐
  │ Cypress:        5.3.0                                                                          │
  │ Browser:        Electron 83 (headless)                                                         │
  │ Node Version:   v16.14.0 (/Users/romande/.nvm/versions/node/v16.14.0/bin/node)                 │
  │ Specs:          2 found (about.spec.ts, index.spec.ts)                                         │
  └────────────────────────────────────────────────────────────────────────────────────────────────┘


────────────────────────────────────────────────────────────────────────────────────────────────────

  Running:  about.spec.ts                                                                   (1 of 2)


  app
  code-coverage parsed sent coverage +0ms
  code-coverage wrote coverage file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json +7ms
  code-coverage parsed sent coverage +174ms
  code-coverage wrote coverage file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json +3ms
  code-coverage NYC file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json has 3 key(s) +6s
  code-coverage 1 key /Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx file path /Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx +0ms
  code-coverage 2 key /Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx file path /Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx +0ms
  code-coverage 3 key /Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx file path /Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx +0ms
  code-coverage in file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json all files are not found? false +1ms
  code-coverage NYC file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json has 3 key(s) +0ms
  code-coverage nyc needs to report on all included files +18ms
  code-coverage include all files options: { all: true, include: [ 'pages/**/*', 'no-coverage-here/**/*' ], exclude: [ 'pages/api/__coverage__.js' ], extension: [ '.js', '.jsx', '.ts', '.tsx' ] } +1ms
  code-coverage searching files to include using patterns [ 'pages/**/*', 'no-coverage-here/**/*', '!pages/api/__coverage__.js', '!**/node_modules/**' ] +0ms
  code-coverage found 4 file(s) +10ms
/Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/no-coverage-here/some-file.ts
  code-coverage coverage has 3 record(s) +9ms
coverage has the following first paths
/Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx
  code-coverage adding empty coverage for file /Users/romande/projects/next-ts-with-cypress-coverage/no-coverage-here/some-file.ts +0ms
  code-coverage includeAllFiles saving updated file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json +0ms
  code-coverage there are 4 keys in the file +0ms
  code-coverage calling NYC reporter with options { 'report-dir': '/Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage', reporter: [ 'json', 'lcov' ], extension: [ '.js', '.jsx', '.ts', '.tsx' ], excludeAfterRemap: false, extends: './.nycrc.json', include: [ 'pages/**/*', 'no-coverage-here/**/*' ], exclude: [ 'pages/api/__coverage__.js' ], all: true, sourceMap: true, instrument: true, 'temp-dir': '/Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output', tempDir: '/Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output', reportDir: '/Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage' } +22ms
  code-coverage current working directory is /Users/romande/projects/next-ts-with-cypress-coverage +1ms
  code-coverage after reporting, returning the report folder name /Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage +988ms
  code-coverage Final coverage in /Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage/coverage-final.json +0ms
  code-coverage There are 4 key(s) in /Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage/coverage-final.json +1ms
  code-coverage ❓ /Users/romande/projects/next-ts-with-cypress-coverage/no-coverage-here/some-file.ts statements covered 0/0 +0ms
  code-coverage ✅ /Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx statements covered 1/1 +0ms
  code-coverage ✅ /Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx statements covered 8/8 +0ms
  code-coverage ✅ /Users/romande/projects/next-ts-with-cypress-coverage/pag    ✓ redirects to / (2070ms)


  1 passing (3s)

es/index.tsx statements covered 3/3 +0ms

  (Results)

  ┌────────────────────────────────────────────────────────────────────────────────────────────────┐
  │ Tests:        1                                                                                │
  │ Passing:      1                                                                                │
  │ Failing:      0                                                                                │
  │ Pending:      0                                                                                │
  │ Skipped:      0                                                                                │
  │ Screenshots:  0                                                                                │
  │ Video:        true                                                                             │
  │ Duration:     3 seconds                                                                        │
  │ Spec Ran:     about.spec.ts                                                                    │
  └────────────────────────────────────────────────────────────────────────────────────────────────┘


  (Video)

  -  Started processing:  Compressing to 32 CRF
  -  Finished processing: /Users/romande/projects/next-ts-with-cypress-coverage/cypre    (0 seconds)
                          ss/videos/about.spec.ts.mp4


────────────────────────────────────────────────────────────────────────────────────────────────────

  Running:  index.spec.ts                                                                   (2 of 2)


  landing
  code-coverage parsed sent coverage +4s
  code-coverage wrote coverage file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json +2ms
  code-coverage parsed sent coverage +31ms
  code-coverage wrote coverage file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json +1ms
  code-coverage NYC file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json has 3 key(s) +5s
  code-coverage 1 key /Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx file path /Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx +0ms
  code-coverage 2 key /Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx file path /Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx +0ms
  code-coverage 3 key /Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx file path /Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx +0ms
  code-coverage in file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json all files are not found? false +1ms
  code-coverage NYC file /Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output/out.json has 3 key(s) +0ms
  code-coverage nyc needs to report on all included files +17ms
  code-coverage include all files options: { all: true, include: [ 'pages/**/*', 'no-coverage-here/**/*' ], exclude: [ 'pages/api/__coverage__.js' ], extension: [ '.js', '.jsx', '.ts', '.tsx' ] } +0ms
  code-coverage searching files to include using patterns [ 'pages/**/*', 'no-coverage-here/**/*', '!pages/api/__coverage__.js', '!**/node_modules/**' ] +1ms
  code-coverage found 4 file(s) +18ms
/Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/no-coverage-here/some-file.ts
  code-coverage coverage has 3 record(s) +1ms
coverage has the following first paths
/Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx
/Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx
  code-coverage adding empty coverage for file /Users/romande/projects/next-ts-with-cypress-coverage/no-coverage-here/some-file.ts +0ms
  code-coverage includeAllFiles saving updated file /Users/romande/projects/next-t    ✓ should render (753ms)


  1 passing (888ms)

s-with-cypress-coverage/.nyc_output/out.json +0ms
  code-coverage there are 4 keys in the file +0ms
  code-coverage calling NYC reporter with options { 'report-dir': '/Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage', reporter: [ 'json', 'lcov' ], extension: [ '.js', '.jsx', '.ts', '.tsx' ], excludeAfterRemap: false, extends: './.nycrc.json', include: [ 'pages/**/*', 'no-coverage-here/**/*' ], exclude: [ 'pages/api/__coverage__.js' ], all: true, sourceMap: true, instrument: true, 'temp-dir': '/Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output', tempDir: '/Users/romande/projects/next-ts-with-cypress-coverage/.nyc_output', reportDir: '/Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage' } +20ms
  code-coverage current working directory is /Users/romande/projects/next-ts-with-cypress-coverage +0ms
  code-coverage after reporting, returning the report folder name /Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage +19ms
  code-coverage Final coverage in /Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage/coverage-final.json +0ms
  code-coverage There are 4 key(s) in /Users/romande/projects/next-ts-with-cypress-coverage/cypress-coverage/coverage-final.json +0ms
  code-coverage ❓ /Users/romande/projects/next-ts-with-cypress-coverage/no-coverage-here/some-file.ts statements covered 0/0 +0ms
  code-coverage ✅ /Users/romande/projects/next-ts-with-cypress-coverage/pages/_app.tsx statements covered 1/1 +0ms
  code-coverage ✅ /Users/romande/projects/next-ts-with-cypress-coverage/pages/about.tsx statements covered 8/8 +0ms
  code-coverage ✅ /Users/romande/projects/next-ts-with-cypress-coverage/pages/index.tsx statements covered 3/3 +0ms

  (Results)

  ┌────────────────────────────────────────────────────────────────────────────────────────────────┐
  │ Tests:        1                                                                                │
  │ Passing:      1                                                                                │
  │ Failing:      0                                                                                │
  │ Pending:      0                                                                                │
  │ Skipped:      0                                                                                │
  │ Screenshots:  0                                                                                │
  │ Video:        true                                                                             │
  │ Duration:     0 seconds                                                                        │
  │ Spec Ran:     index.spec.ts                                                                    │
  └────────────────────────────────────────────────────────────────────────────────────────────────┘


  (Video)

  -  Started processing:  Compressing to 32 CRF
  -  Finished processing: /Users/romande/projects/next-ts-with-cypress-coverage/cypre    (0 seconds)
                          ss/videos/index.spec.ts.mp4


====================================================================================================

  (Run Finished)


       Spec                                              Tests  Passing  Failing  Pending  Skipped
  ┌────────────────────────────────────────────────────────────────────────────────────────────────┐
  │ ✔  about.spec.ts                            00:03        1        1        -        -        - │
  ├────────────────────────────────────────────────────────────────────────────────────────────────┤
  │ ✔  index.spec.ts                            885ms        1        1        -        -        - │
  └────────────────────────────────────────────────────────────────────────────────────────────────┘
    ✔  All specs passed!                        00:04        2        2        -        -        -

Versions

• What is this plugin's version? 3.9.12
• What is Cypress version? 9.6.0
• What is your operating system? Mac OS
• What is the shell? zsh
• What is the Node version? v16.14.0
• What is the NPM version? v8.5.0
• How do you instrument your application? istanbul via the babel-plugin, see the example repo
• When running tests, if you open the web application in regular browser, and open DevTools, do you see window.__coverage__ object? yes
• Is there .nyc_output folder? Is there .nyc_output/out.json file. Is it empty? Can you paste at least part of it so we can see the keys and file paths? yes, it just doesn't cover certainly included files
• Do you run Cypress tests in a Docker container? no

Describe the bug

Coverage is being measured correctly, but ONLY for the pages folder. Anything outside the pages folder (e.g. no-coverage-here) always remains uncovered, despite being called.

Link to the repo
https://github.com/romandecker/next-ts-with-cypress-coverage

Originally found this issue here: https://github.com/kylemh/next-ts-with-cypress-coverage/issues/3