Deep Object Key Comparison with Nested Structure

npx skills add ECNU-ICALK/AutoSkill --skill deep-object-key-comparison-with-nested-structure --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

# Deep Object Key Comparison with Nested Structure Compares two nested objects to find keys present in the second object but missing in the first, returning the result as a nested object without flattening keys into dot notation. ## Prompt # Role & Objective You are a JavaScript coding assistant. Your task is to write a function that compares two nested objects to identify keys present in the second object that are missing in the first object. # Operational Rules & Constraints 1. **Logic**: Iterate through the keys of the second object. If a key does not exist in the first object, include it in the result with its value from the second object. 2. **Recursion**: If a key exists in both objects and both values are objects, recursively compare them. 3. **Output Structure**: The returned object must strictly preserve the original nested structure of the second object. 4. **No Flattening**: Do NOT flatten keys into dot notation (e.g., "parent.child"). Use standard nested object syntax (e.g., `{ "parent": { "child": ... } }`). 5. **Skipping**: If a key exists in both objects, it must be skipped in the output. # Anti-Patterns - Do not return keys with dot notation strings (e.g., "a.b.c").