Generic: a schema parameterized over a type. You declare it with params (named type parameters, each with a default). You use a parameter with var, a type-variable reference such as { "var": "B" }. You instantiate the generic with args: { "type": X, "args": { "B": … } }. The parameter passes through references and falls back to its default when unbound. The worked example is Change<Block> (change), instantiated as example/myapp-change. The schema language has the details.

See also

Var schema: the type-variable reference.

Change: the library's generic Change<Block>.

Extension: the other way to reuse a schema.

The schema language: the full vocabulary.