json-schema-migrate

Migrate JSON-Schema from draft-04 to draft-07, draft-2019-09 or draft-2020-12


Install

``
npm install json-schema-migrate
`

Usage

`javascript
const migrate = require("json-schema-migrate")
const schema = {
id: "my-schema",
minimum: 1,
exclusiveMinimum: true,
}
migrate.draft7(schema)
// or migrate.draft2019(schema)
// or migrate.draft2020(schema)

console.log(schema)
// {
// $id: 'my-schema',
// exclusiveMinimum: 1
// }
`

You can access Ajv instance that is used to migrate schema using migrate.getAjv function:

`javascript
console.log(migrate.getAjv().errorsText(errors))
`

Changes in schemas after migration

- id is replaced with $id
- $schema value becomes draft-07, draft-2019-09 or draft-2020-12 meta-schema
- draft-04 boolean form of exclusiveMaximum/Minimum is replaced with the current number form
- enum with a single allowed value is replaced with const
- Non-standard constant is replaced with const
- empty schema is replaced with true
- schema {"not":{}} is replaced with false
- draft2019 function additionally replaces:
- definitions with $defs
- dependencies with dependentRequired and dependentSchemas
- "id": "#foo" with "$anchor": "foo"
- "id": "schema#foo" with "$id": "schema", "$anchor": "foo"
- draft2020 function additionally replaces array form of items with prefixItems (and additionalItems with items`)

License

MIT