objectstack-formula

What problem does it solve?

This Skill prevents expression errors and non-deterministic metadata by standardizing how ObjectStack authors write CEL formulas, predicates, conditions, and dynamic seed values.

Core Features & Use Cases

• Canonical CEL guidance for metadata: Defines the single supported expression language and the required envelope shape used across ObjectStack domains.
• Determinism-first authoring rules: Ensures build repeatability by pinning evaluation time and banning compile-time date construction patterns.
• Correct surface-to-dialect mapping: Clarifies when to use CEL helpers, cron, template interpolation, and reserved JS surfaces to avoid silent null evaluations.
• Predicate patterns for validation and visibility: Provides reusable patterns for coalescing nullable values, null checks, and guard-safe computations.

Quick Start

Use the objectstack-formula skill when you need to express a boolean visibility predicate or computed field as CEL and want it to compile deterministically across builds.