feat: name anonymous function expressions from assignment and object context

[github-actions]

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Summary

Task 5 — Coding Improvement: When a function_expression or generator_function has no internal name, the analyzer now infers a human-readable name from the parent AST context instead of always falling back to (anonymous).

New name inference rules

Pattern	Before	After
{ getData: function() {} }	(anonymous)	getData
{ getStream: function*() {} }	(anonymous)	getStream
exports.bar = function() {}	(anonymous)	bar
obj.method = function() {}	(anonymous)	method
handler = function() {}	(anonymous)	handler
(function() {})() (IIFE)	(anonymous)	(anonymous) ✅ unchanged
{ getData: function inner() {} }	inner	inner ✅ unchanged

This mirrors the existing behaviour for arrow_function, which already resolves names via variable_declarator and pair parent nodes. The change makes CodeLens output consistent regardless of whether a developer uses arrow syntax or the function keyword in object literals and CommonJS module patterns.

Implementation

In jsLikeAnalyzer.ts, after childForFieldName("name") returns null for anonymous function_expression/generator_function, the code now checks:

1. pair parent ({ key: function() {} }): use the key if it is a property_identifier or identifier
2. assignment_expression parent (x = function() {}): use the property name for member_expression left-hand side, or the identifier name for a simple identifier

Test Status

npm run compile  ✅  (0 errors)
npm run lint     ✅  (0 warnings)
npm run test:unit → 207 passing (was 203), 0 failing

Adds 4 new tests covering all new naming cases. Coverage: jsLikeAnalyzer.ts 100% statements, 97.41% branches (was 98.14%).

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[askpt]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Merge conflicts resolved in commit 0c5ee01. The conflict in jsLikeAnalyzer.ts was between the comment style — main had the pair handling with a slightly different comment, while this PR added the assignment_expression block. The resolved version keeps both the updated comment and the assignment_expression logic.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.76%. Comparing base (f24d2a8) to head (6f801ad).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #515      +/-   ##
==========================================
+ Coverage   81.68%   81.76%   +0.07%     
==========================================
  Files          13       13              
  Lines        4367     4386      +19     
  Branches      445      449       +4     
==========================================
+ Hits         3567     3586      +19     
  Misses        799      799              
  Partials        1        1              

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[Copilot]

Pull request overview

Adds contextual naming for anonymous JavaScript/TypeScript function and generator expressions.

Changes:

• Infers names from object properties and assignment targets.
• Adds unit tests for contextual naming scenarios.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
src/metricsAnalyzer/languages/jsLikeAnalyzer.ts	Adds assignment-based name inference.
src/unit/unit.test.ts	Adds naming behavior tests.

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