Feature/xor-operator-enum-functions-enhanced

[andreasnicolaou]

feat: add support for 'xor' operator and enhance constant function

• Added 'xor' operator to the lexer and parser with appropriate precedence.
• Enhanced the constant function to support PHP-style class constants and improved error handling.
• Updated tests for the constant function to cover various scenarios including class constants and global properties.
• Introduced enum function to handle TypeScript-style enums and added comprehensive tests for validation.
• Refactored ArrayNode and BinaryNode to improve evaluation logic and added support for new operators.
• Updated documentation to reflect new features and changes in functionality.
• bump @rollup/plugin-node-resolve from 16.0.1 to 16.0.2
• bump @types/node from 24.6.1 to 24.7.0
• bump @typescript-eslint/eslint-plugin and @typescript-eslint/parser from 8.45.0 to 8.46.0
• bump eslint from 9.36.0 to 9.37.0
• bump rollup from 4.52.3 to 4.52.4

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​typescript-eslint/​parser@​8.45.0 ⏵ 8.46.0
	@​typescript-eslint/​eslint-plugin@​8.45.0 ⏵ 8.46.0	+1		+1
	@​types/​node@​24.6.1 ⏵ 24.7.0	+1		+1
	@​rollup/​plugin-node-resolve@​16.0.1 ⏵ 16.0.2				+7
	eslint@​9.36.0 ⏵ 9.37.0	+1			+2
	rollup@​4.52.3 ⏵ 4.52.4	+1

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (a8d05cd) to head (64fe8b1).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #84   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           22        22           
  Lines         1022      1072   +50     
  Branches       273       271    -2     
=========================================
+ Hits          1022      1072   +50     

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[Copilot]

Pull Request Overview

This PR adds comprehensive XOR operator support and enhances enum functions, along with code quality improvements. The implementation includes both word-based and symbolic XOR operators with proper precedence handling, while introducing new constant() and enum() functions for better PHP-style and TypeScript-style enum support.

• Added XOR operator support with proper lexing, parsing, and evaluation
• Introduced constant() and enum() functions for accessing global constants and enum values
• Refactored object creation patterns to use Object.create(null) for better prototype safety
• Enhanced array node logic with improved hash detection and evaluation methods

Reviewed Changes

Copilot reviewed 16 out of 18 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/parser.ts	Added XOR operator with precedence 12 to binary operators
src/lexer.ts	Added 'xor' keyword to WORD_OPERATORS array
src/node/binary-node.ts	Implemented XOR evaluation logic and optimized logical operators
src/node/binary-node.test.ts	Added comprehensive test cases for XOR operator
src/expression-language.ts	Added constant() and enum() functions with full validation
src/expression-language.test.ts	Added extensive test coverage for enum function
src/expression-function.ts	Enhanced function resolution and added constant/enum support
src/expression-function.test.ts	Added tests for new function capabilities
src/node/*.ts	Replaced empty object literals with Object.create(null)
src/node/array-node.ts	Refactored array/object detection logic with new helper methods
README.md	Updated documentation to reflect XOR support and new functions
package.json	Updated development dependencies to latest versions

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