Duplicate element in enum

openapi-contrib / openapi-schema-to-json-schema

Due to the OpenAPI v3.0 and JSON Schema discrepancy, you can use this JS library to convert OpenAPI Schema objects to proper JSON Schema.

MIT License

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If an OpenAPI definition contains an enum property that is 1) nullable and 2) that explicitly contains null in its enum values list, then the converted JSON Schema will have the value null twice in its enum definition, which makes it fail in AJV.

Example input

{
    "type": "object",
    "properties": {
        "lastError": {
            "type": "string",
            "enum": ["referenceError", "configurationError", "unexpectedError", null],
            "nullable": true
        }
    }
}

Current output

    ...
    "enum": ["referenceError", "configurationError", "unexpectedError", null, null],
    ...

openapi-contrib / openapi-schema-to-json-schema

Duplicate element in enum #34