Fix version detection to support all semver formats and remove unused variable

[Copilot]

The dependencyAnalyzer tool used fragile .startsWith('^') checks that only detected caret-prefixed versions, missing ~4.0.0, >=4.0.0, 4.46.0, and other valid semver formats.

Changes

• Version detection: Replaced string prefix checks with regex-based getMajorVersion() helper that extracts major version from any semver format (^, ~, >=, >, <, exact, wildcards)
• Cleanup: Removed unused content variable in go.mod detection block
• Test coverage: Added 6 comprehensive tests for getMajorVersion() function to verify extraction from all semver formats and edge cases

// Before: Only matches ^4.x.x
if (deps['webpack'] && deps['webpack'].startsWith('^4')) {
  findings.push('Webpack 4 detected - consider upgrading to Webpack 5');
}

// After: Matches ^4.0.0, ~4.0.0, >=4.0.0, 4.46.0, 4.x, etc.
const getMajorVersion = (version) => {
  if (!version) return null;
  const match = version.match(/^[~^>=<]*(\d+)/);
  return match ? parseInt(match[1], 10) : null;
};

const webpackMajor = getMajorVersion(deps['webpack']);
if (webpackMajor === 4) {
  findings.push('Webpack 4 detected - consider upgrading to Webpack 5');
}

Testing

• ✅ All 31 functional tests pass (6 new version detection tests added)
• ✅ Tests verify correct extraction from caret ranges, tilde ranges, comparison operators, exact versions, and wildcards
• ✅ Tests verify null returns for invalid inputs
• ✅ All unit tests pass
• ✅ Validation scripts pass

The changes are minimal and focused, improving the robustness of version detection while ensuring comprehensive test coverage.

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[Copilot]

Pull request overview

This PR improves version detection in the dependencyAnalyzer tool to support all valid semver formats instead of only caret-prefixed versions. It also removes an unused variable.

Changes:

• Introduced a getMajorVersion() helper function using regex to extract major versions from any semver format (^, ~, >=, >, <, exact versions, wildcards)
• Refactored webpack and React version detection to use the new helper instead of .startsWith('^') checks
• Removed unused content variable in go.mod detection block

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[mdaashir]

@copilot apply changes based on the comments in this thread

[Copilot]

@copilot apply changes based on the comments in this thread

Applied all changes from the review thread:

1. Fixed regex (caa6777): Removed unnecessary escape for caret character
2. Added test coverage (caa6777, ed3eee5): Created 6 comprehensive tests for getMajorVersion() covering all semver formats and edge cases

All 31 functional tests now passing.