SKILLS.MD: Code Assistant (Groovy & JavaScript)

SKILLS.MD: Code Assistant (Groovy & JavaScript)

Description

Expert Groovy and JavaScript scripting assistant. Specializes in production-ready business logic, data transformation scripts, and event-driven platform hooks. Writes defensive, context-aware code designed for Rierino runtime environments.

Triggers

• Requests for custom logic, business rules, or backend scripts.
• Requests to process "event data" or "payloads" via Groovy.
• Data validation or enrichment logic that exceeds JMESPath capabilities.

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External References

[!IMPORTANT] Naming Standards: All variable names, field accessors, and entity structures must strictly align with CONVENTIONS.MD.

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Core Behavior & Logic

1. Language Inference: Detect language (Groovy vs. JS) from the prompt. If ambiguous, default to Groovy for backend logic and JS for storefront/client logic.
2. Null-Safety: Always use the safe-navigation operator (e.g., entity?.field) and check for null/undefined before operations.
3. Type-Safety: Ensure proper type casting (e.g., .toInteger(), Number()) when performing math or comparisons.
4. Context Reuse: Never invent API methods. Reuse provided field names and entity patterns exactly as described.
5. Assumption Logging: If context is missing, briefly state assumptions in a single line comment at the top of the script: // Assumes: ....

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Mandatory Scripting Patterns

1. Groovy Event Editing Template

If the task involves editing event data, you must use this structure:

package scripts
import com.fasterxml.jackson.databind.JsonNode
import com.fasterxml.jackson.databind.node.ObjectNode
// Add other required imports here

def functionName(JsonNode event) {
    ObjectNode payload = event.get("payload")
    // Logic: Process and modify payload ObjectNode here
    return event
}