Ajv was awarded a sponsorship fromMicrosoft FOSS fund - huge thanks to Microsoft and the engineers who voted to support Ajv development.

This award will contribute to a long term maintenance of Ajv.

Huge thanks to everybody who joined, and to the speakers! The video of the event isavailable on YouTube.

We will talk about:

• new features of Ajv version 8.
• the improvements sponsored by Mozilla's MOSS grant.
• how Ajv is used in JavaScript applications.

Speakers:

• Evgeny Poberezkin, the creator of Ajv.
• Mehan Jayasuriya, Program Officer at Mozilla Foundation, leading theMOSS and other programs investing in the open source and community ecosystems.
• Matteo Collina, Technical Director at NearForm and Node.js Technical Steering Committee member, creator of Fastify web framework.
• Kin Lane, Chief Evangelist at Postman. Studying the tech, business & politics of APIs since 2010. Presidential Innovation Fellow during the Obama administration.
• Ulysse Carion, the creator of JSON Type Definition specification.

Gajus Kuizinas will host the event.

Pleaseregister here.

Ajv version 8 has these new features:

• support of JSON Schema draft-2020-12:prefixItems keyword and changed semantics ofitems keyword,dynamic recursive references.
• OpenAPIdiscriminator keyword.
• improved JSON Type Definition support:

JSON Type Definition (JTD) is a new specification for defining JSON structures that is very simple to use, comparing with JSON Schema, less error prone, and it is published asRFC8927.

SeeChoosing schema language for a detailed comparison between JSON Schema and JSON Type definition andinformal specification.

Ajv version 7 has these new features:

• support of JSON Schema draft-2019-09 features:unevaluatedProperties andunevaluatedItems,dynamic recursive references and otheradditional keywords.
• to reduce the mistakes in JSON schemas and unexpected validation results,strict mode is added - it prohibits ignored or ambiguous JSON Schema elements.
• to make code injection from untrusted schemas impossible,code generation is fully re-written to be safe and to allow code optimization (compiled schema code size is reduced by more than 10%).

Ajv has been awarded a grant from Mozilla’sOpen Source Support (MOSS) program in the “Foundational Technology” track! It will sponsor the development of Ajv support ofJSON Schema version 2019-09 and ofJSON Type Definition (RFC8927).

Ajv also joinedOpenJS Foundation – having this support will help ensure the longevity and stability of Ajv for all its users.