Add an `ata-validator` alternative to AJV

[TheOneTheOnlyJJ]

Prerequisites

• I have read the documentation

What theme are you using?

validator-ajv8

Is your feature request related to a problem? Please describe.

No response

Describe the solution you'd like

It is in RJSF's interest to have other validator options available. Especially given how the frequency of AJV updates has appeared to drop over the last year.

However, not many good options were available until now.

ata-validator is a new high-performance JSON schema validator that could coexist with the existing AJV one. Pre-compiled schemas are also supported. Also related to #4614, as ata can output its errors in the Standard Schema format.

Describe alternatives you've considered

Continue relying strictly on AJV.

[mertcanaltin]

Hey @TheOneTheOnlyJJ, thanks for opening this.

happy to put together a validator-ata package that mirrors validator-ajv8 if there is interest.

[x0k]

I just tried creating a validator based on ata-validator; here is some feedback:

• No support for custom formats usage
• ValidationError does not include parentSchema usage
• When using the Standard Schema interface, issue.path stores indices as strings - unclear why
• Could not find a way to compile multiple schemas into an ESM bundle, also toStandaloneModule method is missing in index.d.ts
• When compiling a CJS bundle (bundleStandalone), schemas with $ref were not compiled script input output

The issues listed above are not blocking for most schemas, and ata-validator can be used to implement an alternative runtime validator. There is potential to outperform Ajv as a precompiled validator.

[mertcanaltin]

Hey @x0k, thanks for the list. all six fixed in v0.12.3:

1. custom formats via options.formats: { name: fn }
2. parentSchema on errors with options.verbose: true
3. Standard Schema V1 issue.path emits numeric indices for array positions
4. toStandaloneModule in index.d.ts
5. bundleStandalone({ format: 'esm' })
6. bundleStandalone resolves cross-schema $ref now

https://github.com/ata-core/ata-validator/releases/tag/v0.12.3

[x0k]

@mertcanaltin thanks, that was quick. However, it looks like the changes (except for toStandaloneModule) were not reflected in index.d.ts.

[TheOneTheOnlyJJ]

@mertcanaltin thanks, that was quick. However, it looks like the changes (except for toStandaloneModule) were not reflected in index.d.ts.

Fixed again, in less than 10 minutes :)

[mertcanaltin]

thanks, I fixed.