[BUG] Generating from ndjson file: `Cannot read properties of undefined`

[michaelfuermann-xitaso]

I created a small definition in a ndjson file for a first test:

{"resourceType": "Questionnaire","meta": {"profile": ["http://hl7.org/fhir/5.0/StructureDefinition/Questionnaire"]},"version": "0.1","name": "QuestionnairePatientComment", "title": "Kommentar senden", "status": "draft", "subjectType": ["Patient"], "item": [{"type": "text", "linkId": "patient_comment", "text": "Gibt es weitere Anliegen, die du mitteilen möchtest?"}]}

Trying to generate types from this NDJSON with
npx @fhirschema/codegen generate -f fhir/test.ndjson -o types -g typescript

leads to the following error:

Starting code generation with typescript generator...
Successfully generated code to test
/mnt/[ ... ]/node_modules/@fhirschema/codegen/dist/loader.js:106
            .filter(({ identifier }) => identifier.kind === 'complex-type')
             ^

TypeError: Cannot read properties of undefined (reading 'filter')
    at SchemaLoader.complexTypes (/mnt/[ ... ]/node_modules/@fhirschema/codegen/dist/loader.js:106:14)
    at /mnt/[ ... ]/node_modules/@fhirschema/codegen/dist/generators/typescript/index.js:231:32
    at TypeScriptGenerator.dir (/mnt/[ ... ]/node_modules/@fhirschema/codegen/dist/generator.js:58:9)
    at TypeScriptGenerator.generate (/mnt/[ ... ]/node_modules/@fhirschema/codegen/dist/generators/typescript/index.js:229:14)
    at Command.<anonymous> (/mnt/[ ... ]/node_modules/@fhirschema/codegen/dist/commands/generate.js:234:31)

Node.js v22.14.0

Environment:
Ubuntu 22 in Windows WSL2

[GenaRazmakhnin]

Hello! Thank you for your interest and feedback on the repository.
The project aims to generate custom models (like types, classes, DTO, etc.) out of FHIR StructureDefinitions. We do not support model derivation from FHIR resources in general.
Could it be that you wanted to generate code out of the Questionnaire schema?