v8.1.0

unicodeRegExp option to not use RegExp unicode flag that may be incompatible with some environments (@asaid-0, #1530)
Fix JSONSchemaType (@erikbrinkman, #1541)
Extended error message for invalid keyword values (@pcwiek, #1542)

v8.0.5

Fix: add source code back to npm package, 8.0.4 is breaking ajv-cli (and possibly other things)

v8.0.4

Reduce npm bundle size

v8.0.3

Improve JSONSchemaType errors (@erikbrinkman, #1525)

v8.0.2

Support RegExp formats in standalone code (#1470)
Add schema path to strictTuple error message (@asaid-0, #1519)

v8.0.1

Typescript: export function getData (for ajv-errors)

v8.0.0

This document describes changes from v7.2.4 to v8.0.0.

If you are migrating from v6 you can use this document.

New features

Support JSON Schema draft-2020-12: prefixItems keyword and changed semantics of items keyword, dynamic recursive references.
OpenAPI discriminator keyword.
Improved JSON Type Definition support:

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

Other changes / improvements

Node.js require works without .default property - see examples in Getting started
Reduce runtime dependency for standalone validation code
Fix resolution of $ref: "#" when $id is present (#815)

Breaking changes

Option strict controls all strict mode restrictions
JSON Schema validation errors changes:

• dataPath property replaced with instancePath
• "should" replaced with "must" in the messages
• property name is removed from "propertyName" keyword error message (it is still available in error.params.propertyName).

v7.2.4

Fix #1515: correctly initialize evaluated properties.

v8.0.0-beta.4

Revert the change for strict mode options in v8.0.0-beta.1 to allow overrides to disable some options, not only to enable.

These strict mode options are available:
strictSchema - new, equivalent to strict: true in v7, default true
strictNumbers - reinstated from v6, but with default true
strictTypes - same as in v7, default "log"
strictTuples - same as in v7, default "log"
strictTuples - same as in v7, default false

Option strict sets all options above to the same value.

v8.0.0-beta.3

JSON Schema draft2012-12 support - prefixItems, new semantics of items, dynamicRef and dynamicAnchor

Fixes:

• #815 - incorrect resolution of $ref: "#" with $id in subschema
• #1493 - incorrect error message for missing property with ownProperties: true option
• #1501 - incorrect compilation of JTD schema with many properties in the schema