fix code coverage

[cenfun]

Fixed code coverage report for node test runner with mcr

NOTE: Please help to Adding the Codecov token for reporting coverage to Codecov. @jonathanong

Following reports will be generated after running npm run test:coverage

• console-details

  [MCR] Koa Coverage Report
  ┌────────────────────┬──────────┬────────────┬──────────┬───────────┬──────────┬─────────────────┐
  │ Name               │    Bytes │ Statements │ Branches │ Functions │    Lines │ Uncovered Lines │
  ├────────────────────┼──────────┼────────────┼──────────┼───────────┼──────────┼─────────────────┤
  │ lib                │          │            │          │           │          │                 │
  │ ├ application.js   │  99.81 % │   100.00 % │  97.67 % │  100.00 % │  99.38 % │ 239             │
  │ ├ context.js       │  99.11 % │   100.00 % │  63.33 % │  100.00 % │  97.58 % │ 141-143         │
  │ ├ only.js          │ 100.00 % │   100.00 % │ 100.00 % │  100.00 % │ 100.00 % │                 │
  │ ├ request.js       │ 100.00 % │   100.00 % │  70.24 % │  100.00 % │ 100.00 % │                 │
  │ ├ response.js      │ 100.00 % │   100.00 % │  57.60 % │  100.00 % │ 100.00 % │                 │
  │ └ search-params.js │ 100.00 % │   100.00 % │ 100.00 % │  100.00 % │ 100.00 % │                 │
  ├────────────────────┼──────────┼────────────┼──────────┼───────────┼──────────┼─────────────────┤
  │ Summary            │  99.85 % │   100.00 % │  72.84 % │  100.00 % │  99.57 % │                 │
  └────────────────────┴──────────┴────────────┴──────────┴───────────┴──────────┴─────────────────┘

• v8 see html report coverage-reports/index.html
• v8-json review file coverage with VScode extension directly.
• codecov generate native Codecov coverage data file (will upload to Codecov)

see coverage config mcr.config.js

Checklist

• [x] I have ensured my pull request is not behind the main or master branch of the original repository.
• [x] I have rebased all commits where necessary so that reviewing this pull request can be done without having to merge it first.
• [x] I have written a commit message that passes commitlint linting.
• [x] I have ensured that my code changes pass linting tests.
• [x] I have ensured that my code changes pass unit tests.
• [x] I have described my pull request and the reasons for code changes along with context if necessary.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.56%. Comparing base (b89e19a) to head (8bebae3). Report is 22 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1847 +/- ## ========================================== - Coverage 99.61% 99.56% -0.05% ========================================== Files 5 6 +1 Lines 520 928 +408 Branches 147 2 -145 ========================================== + Hits 518 924 +406 Misses 2 2 - Partials 0 2 +2 ```

:umbrella: View full report in Codecov by Sentry.
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