Ajv version 8 is released!

Ajv version 8 has these new features:

• support of JSON Schema draft-2020-12: <a href="/json-schema.html#prefixitems">prefixItems</a> keyword and changed semantics of <a href="/json-schema.html#items-in-draft-2020-12">items</a> keyword, <a href="/guide/combining-schemas.html#extending-recursive-schemas">dynamic recursive references</a>.
• OpenAPI <a href="/json-schema.html#discriminator">discriminator</a> keyword.
• improved JSON Type Definition support:

• errors consistent with JTD specification.
• error objects with additional properties to simplify error handling
• internationalized error messages with ajv-i18n
• TypeScript: support type unions in JSONSchemaType

See release notes for the details.

To install the new version:

npm install ajv

See Getting started for code examples.