Type Alias KeywordDefinition<Value, Context>

The URI of a keyword that means the same thing. The keyword's results are normalized under that URI, so everything that handles that keyword handles this one too. The compiled values must have the same shape. For example, the OpenAPI 3.0 type keyword is an alias of the JSON Schema type keyword.

Annotations, such as title and description, never affect validation. A schema that only has annotations allows any value.

Conditional applicators, like then and dependentSchemas, are simple applicators whose subschemas only apply when a condition holds. Whether a keyword is a simple applicator comes from its @hyperjump/json-schema keyword definition. The results of a simple applicator's subschemas are flattened into the results of its parent schema, but the results of a conditional applicator are left out when describing the parent schema because its error handler describes them along with the condition.

The message for an occurrence of the keyword that failed.

What the keyword requires, or in a negated localization, what would make it fail. Use localization.formatRequirement to pick the message. Return undefined if the keyword doesn't require anything. It's used to explain failures caused by a subschema passing, such as with not.