[spawnia]

SelectField typed onSelect and onDeselect by the field value.
When the field path runs through a nullable parent, that value is Array<string> | null, so handlers received string | null and consumers had to assert, although a select callback only ever receives an option's value.

Both handlers now receive the element type of the non-null field value, string in the example.
value and onChange keep the field type.
Handlers that accept wider types, such as string | null, still compile.

For agents 🤖: ready for review, nothing pending

Only src/Fields/SelectField.tsx changed: onSelect/onDeselect are omitted from SelectProps and redeclared as SelectHandler<SelectedValue<TFieldValue>, TOption>.
yarn typecheck and eslint on the file pass.
A temporary usage with a nullable parent confirmed (v: string) => … compiles after the change and failed before.
The handler type derives from the field value rather than TOption['value'], because the default option value type includes number | null, which would break existing string handlers.

🤖 Generated with Claude Code

[Copilot]

🟡 Changes recommended

The select callback typing incorrectly retains string[] for nullable scalar-or-array fields, rejecting valid string-only onSelect and onDeselect handlers.

1 open issue

• Fix scalar callback types for nullable union values · New

What changed in this PR

This PR refines SelectField callback types so selection handlers use an individual selected value rather than the nullable field value.

Changes:

• Adds SelectedValue to derive callback value types.
• Redeclares onSelect and onDeselect while preserving the field types for value and onChange.

File	Description
src/​Fields/​SelectField.tsx	Introduces selected-value typing for selection and deselection callbacks.

_{Review effort: Balanced}

[github-actions]

🎉 This PR is included in version 21.1.1-alpha.2 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 21.1.1-alpha.3 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot 📦🚀