chore: migrate from ESLint to oxlint with @eggjs/oxlint-config extension

[Copilot]

This PR migrates the linting setup from ESLint to oxlint, extending from the @eggjs/oxlint-config configuration package while maintaining backward compatibility.

Changes Made

• Removed dependencies: eslint and eslint-config-egg
• Added dependencies: oxlint and @eggjs/oxlint-config
• Updated lint script: Changed from eslint src test --ext .ts --cache to oxlint src test
• Extended configuration: Added .oxlintrc.json that extends from @eggjs/oxlint-config with selective rule overrides to maintain compatibility
• Auto-fixed code: Applied oxlint's auto-fixes for code style improvements

Configuration Approach

The new .oxlintrc.json extends from @eggjs/oxlint-config as the base configuration but selectively disables additional rules to preserve the original linting behavior. This approach:

• Inherits the comprehensive EggJS oxlint configuration structure
• Maintains the same 2 warnings as the original ESLint setup (no-extend-native rule)
• Provides a foundation for future rule adoption when the codebase is ready

Performance Benefits

• Significantly faster: Linting now completes in ~21ms vs previous longer execution times
• Smaller dependency footprint: Removed 140+ npm packages from the dependency tree
• Maintained compatibility: Produces the same 2 warnings as the original ESLint setup

Before vs After

Before (ESLint):

❯ eslint src test --ext .ts --cache
/home/runner/work/urllib/urllib/src/utils.ts
  247:5  warning  String prototype is read only, properties should not be added  no-extend-native
  259:5  warning  String prototype is read only, properties should not be added  no-extend-native

✖ 2 problems (0 errors, 2 warnings)

After (oxlint with @eggjs/oxlint-config):

❯ oxlint src test
  ⚠ eslint(no-extend-native): String prototype is read-only, properties should not be added.
     ╭─[src/utils.ts:247:5]

  ⚠ eslint(no-extend-native): String prototype is read-only, properties should not be added.
     ╭─[src/utils.ts:259:5]

Found 2 warnings and 0 errors.
Finished in 21ms on 66 files using 4 threads.

The migration successfully uses the official EggJS oxlint configuration while maintaining the same linting behavior for backward compatibility.

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[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/node-modules/urllib@590

commit: e2d80e3

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/node-modules/urllib@590

commit: bf20695

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.27%. Comparing base (54aa22a) to head (e2d80e3).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #590   +/-   ##
=======================================
  Coverage   95.27%   95.27%           
=======================================
  Files          11       11           
  Lines        1377     1377           
  Branches      316      317    +1     
=======================================
  Hits         1312     1312           
  Misses         61       61           
  Partials        4        4           

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[github-actions]

🎉 This PR is included in version 4.8.2 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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