What problem does it solve?
It removes repetitive, error-prone work of hand-writing equality, equivalence-based deduplication, filtering predicates, and multi-criteria sorting for domain models by deriving them from Effect v4 typeclass implementations and schema structure.
Core Features & Use Cases
- Derives equivalence from Schema using structural equality via
Schema.toEquivalence, then uses it with combinators like deduplication.
- Builds field-based equivalences with
Equivalence.mapInput and combines them with Equivalence.combine for multi-criteria identity.
- Creates sortable domain orders with
Order.mapInput and composes multi-criteria ordering using Order.combine (with clear precedence rules).
- Re-exports complete predicate sets for domain types by using typeclass-driven patterns such as schedulable and durable field predicates.
- Use Case: For an
Appointment domain, generate predicates like isScheduledThisWeek and orders like OrderByStatusThenTime, then use them for filtering, sorting, and deduplicating lists in pipelines.
Quick Start
Ask the AI to generate the full set of Effect v4 predicates, equivalences, and Order instances for your domain type (including multi-field combinations) based on your schema/typeclass definitions.
