rjsf-team/react-jsonschema-form

Empty anyOf invalid schema on first validation

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#3933 opened on Oct 31, 2023

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bughelp wantedvalidation

Description

Prerequisites

What theme are you using?

core

Version

5.13.2

Current Behavior

An object with a property of type ["string", "null"] (foo in the example) that uses an empty anyOf has an invalid schema on the first validation, on subsequent validations the schema is valid. It does not matter if you use AJV raw validation or the RJSF validate button in the playground. The invalid schema error shows on the first of either, and not on subsequent of both.

Interestingly in the AJV raw validate the first validation returns:

{ "validationError": {} }

Expected Behavior

The schema should not be invalid on the first validation.

Steps To Reproduce

Here is a playground link

Must refresh to get "first" validation issue.

Environment

- OS: macOS 14.0
- Node: 16.20.1
- npm: 8.19.4

Anything else?

No response

Contributor guide

Tech stack
typescriptreact
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
ReactJSON Schemareact jsonschema form
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate the validation logic in react jsonschema form, specifically how empty anyOf is processed on first render. The bug appears in the form's initial validation, possibly in the getSchema or validate functions. Compare behavior with AJV validation to identify discrepancy. Look at the playground link for reproduction steps and examine the form state initialization for caching issues.