Add object manipulation functions: merge, keys, values, flatten

[Copilot]

Adds a new src/functions/object directory with four object manipulation functions for the expression parser:

• merge(...objects) - Merges two or more objects together. Duplicate keys are overwritten by later arguments.
• keys(obj) - Returns an array of strings containing the keys of the object.
• values(obj) - Returns an array containing the values of the object.
• flatten(obj, separator?) - Flattens a nested object's keys using an optional separator (default: _). For example, {foo: {bar: 1}} becomes {foo_bar: 1}.

Changes Made

• Created src/functions/object/operations.ts with function implementations
• Created src/functions/object/index.ts to export object functions
• Updated src/functions/index.ts to include object module export
• Updated src/parsing/parser.ts to register the new functions
• Added documentation for object functions in docs/syntax.md
• Added language server support with completions and hover documentation in src/language-service/language-service.documentation.ts

Testing

• Added comprehensive test suite with 23 test cases in test/functions/functions-object.ts
• All 1044 tests pass including 47 language service tests

Security Summary: No security vulnerabilities were discovered by CodeQL analysis.

Original prompt

Create a directory src/functions/object and implement the following functions for objects:

merge: Takes two or more objects and merges them together. Duplicate keys will be overwritten by later arguments.
keys: Accepts an object and returns an array of strings which are the keys of the object.
values: returns an array of object values
flatten: takes an object and returns an object but with flatten keys { foo: { bar: 1 }} becomes {foo_bar: 1}

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[Sander-Toonen]

Document the object functions.

[Copilot]

Document the object functions.

Added documentation for the object functions in docs/syntax.md with a new "Object Manipulation Functions" section that includes function descriptions and usage examples. (d2b4d2c)

[Sander-Toonen]

Make sure the language server also works with the new functions

[Copilot]

Pull request overview

This PR adds comprehensive object manipulation functions to the expression parser, enabling users to work with objects in their expressions. The implementation includes four new functions: merge, keys, values, and flatten, along with complete test coverage and documentation.

Changes:

• Added four object manipulation functions (merge, keys, values, flatten) with proper error handling and type safety
• Created comprehensive test suite with 23 test cases covering all functions and edge cases
• Updated documentation with clear descriptions, examples, and usage patterns

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/functions/object/operations.ts	Implements the four object manipulation functions with proper validation and error handling
src/functions/object/index.ts	Exports all object manipulation functions
src/functions/index.ts	Re-exports object functions to make them available throughout the codebase
src/parsing/parser.ts	Imports and registers the new object functions in the parser
test/functions/functions-object.ts	Comprehensive test suite with 23 tests covering all functions and edge cases
docs/syntax.md	Documentation for the new object functions with clear examples and usage patterns

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[Sander-Toonen]

@copilot Add language server support for the added functions

[Sander-Toonen]

@copilot Add language server support for the added functions

[Copilot]

@copilot Add language server support for the added functions

Added language server documentation for the object functions (merge, keys, values, flatten) in language-service.documentation.ts. The functions now appear in autocomplete with proper parameter hints and show hover documentation. (cfd6017)