| Field | Value |
|---|---|
| Standard | MOF Support for Semantic Structures (SMOF) 1.0 |
| OMG Formal Document | formal/2013-04-01 |
| OMG Specification | omg.org/spec/SMOF/1.0 |
| Authority | Object Management Group (OMG) |
| npm Package | @amlhubs/smof |
| npm Version | 0.0.0 (scaffold) |
| Peer Dependencies | @amlhubs/mof@^0.0.4, @amlhubs/uml@^0.0.2 |
| License | UNLICENSED |
The Object Management Group's MOF Support for Semantic Structures (SMOF) 1.0, formal/2013-04-01, defines the meta-metamodel layer that adds dynamically mutable multiple classification of model elements to MOF 2 — together with the declarative machinery that constrains when such multiple classifications are required, allowed, or prohibited. The specification also formalizes the powertype pattern as a first-class metamodel concept and defines its interaction with the MOF reflective protocol. SMOF is the OMG's bridge between the static, single-classification world of CMOF/EMOF and the open-world, evolution-aware semantics that domain-specific languages, ontology-aligned metamodels, and category-mutating systems require.
The @amlhubs/smof package projects every SMOF metaclass into TypeScript with full §-cited JSDoc per the OMG specification document. The package depends on @amlhubs/mof for the reflective substrate and on @amlhubs/uml for the structural vocabulary. This 0.0.0 release is the empty scaffold — the metaclasses themselves land in the next release.
A typed SMOF package unlocks dynamic-multiple-classification semantics for any model registry that already speaks MOF — a structural step-up that the reference EMF/Ecore stack does not natively provide. Domain models that need to evolve an instance's classifier set at runtime (a Person becoming a Customer and then additionally a Supplier without losing identity) can express that mutation as a typed SMOF operation rather than as ad-hoc state. Powertype-aware tooling — ontology aligners, classification-driven validators, instance-level introspection engines — gains a normative metamodel surface to compile against.
ISO and ISO/IEC have not adopted SMOF as a separate standard, but its dependency on MOF (which is ISO/IEC 19508:2014) means SMOF-conformant model artifacts inherit the same regulatory grounding through transitive citation. Ventures whose model evolution semantics matter (compliance domains where role mutation is auditable, healthcare ontologies where classification migrates with diagnosis state, financial systems where counterparty roles overlap) benefit from an explicit, citable formal grounding for the multiple-classification semantics they already implement informally.
The package will surface the SMOF metaclasses defined in formal/2013-04-01 with TypeScript interfaces and concrete classes. This 0.0.0 scaffold exposes only the file skeleton. Every metaclass added in 0.0.1+ will carry a JSDoc header citing the §-section of the specification, the OCL invariants from CMOFConstraints.ocl and EMOFConstraints.ocl that govern it, and the precise type bindings against @amlhubs/mof and @amlhubs/uml.
@amlhubs/uml (structural vocabulary — root of the stack)
▲
│ peerDependency
│
@amlhubs/mof (reflective machinery over UML)
▲
│ peerDependency
│
@amlhubs/smof (this package — multiple-classification + powertype semantics over MOF)
@amlhubs/smof declares both @amlhubs/mof@^0.0.4 and @amlhubs/uml@^0.0.2 as peer dependencies. The MOF dependency is necessary because SMOF specializes the MOF reflective substrate; the UML dependency is necessary because SMOF metaclasses inherit from UML structural types via MOF.
npm install @amlhubs/smof @amlhubs/mof @amlhubs/uml// Imports will be wired in 0.0.1+ once the metaclasses ship.
// import type { ... } from '@amlhubs/smof';The source artifact is smof.ts. The 0.0.0 scaffold contains the spec banner only.
Every metaclass in this package will cite the SMOF 1.0 specification artifacts. The authoritative OMG-published artifact set:
- SMOF 1.0 PDF (formal/2013-04-01)
- SMOF.xmi (machine-readable metamodel)
- InfrastructureLibrary.mdxml
- PrimitiveTypes.mdxml
- Superstructure.mdxml
- CMOFConstraints.ocl
- EMOFConstraints.ocl
These artifacts will be mirrored under ./specs/ when the next subagent in the /metamodel deploy smof workflow scrapes them.
| Version | Date | Notes |
|---|---|---|
| 0.0.0 | 2026-05 | Empty scaffold — package + tsconfig + LICENSE + README + smof.ts banner. Metaclasses land in 0.0.1. |
UNLICENSED — published as a private GitHub Packages artifact under the @amlhubs scope. See LICENSE.