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README.md

json-schema-migrate

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

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Install

npm install json-schema-migrate

Usage

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

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

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

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

Changes in schemas after migration

  • id is replaced with $id
  • $schema value becomes draft-07 or draft-2019-09 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"

License

MIT

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Migrate JSON-Schema to draft-07 and draft-2019-09

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