Concerto 1.0 to 2.0

Concerto 2.0 delivers fundamental improvements over previous releases, whilst maintaining a high-degree (though not total!) of backwards compatibility with 1.x. In particular all of the 1.x Concerto syntax remains valid in 2.0.

The release includes over 75 commits, and over 400 files changed. Thank you to all the contributors!

note

We are currently in the process of migrating the Accord Project stack to Concero v2.0. While the migration is underway you may see some components that still depend upon Concerto v1.x.

Summary of Changes

• Update the Concerto metamodel to version 0.3
• Migrate the Concerto parser from pegjs (no longer maintained) to peggy
• Improvements to Typescript type definitions
• Fixes for JSON Schema generation
• Drop support for Node 12, adding support for Node 16
• Re-organize the code to make concerto-core independent of the CTO concrete syntax, moving parsing and CTO generation into the new concerto-cto package.
• Add concerto-util package for common code
• Add concerto-vocabulary package, for managing localized terms for models
• Add DecoratorManager to allow decorations on model to be externalized and applied to models

Summary of API Changes

• Added method declarationKind() to concept/asset etc to determine the type
• Removed the method hasInstance to perform instanceof checks
• ModelFile.getAst to return the metamodel for a model
• ModelManager.addCTOModel to add a model as a CTO string to a model manager
• BaseModelManager to manager models, independent of CTO syntax
• BaseModelManager.getAst to get metamodel for a set of models
• BaseModelManager.fromAst to create a ModelManager from a metamodel