[gdevenyi]

Summary

A record array field adds one empty record when it is rendered. If the user did not fill it in, validation failed on that record.

 handleSubmit / revalidate
-  validationSchema.safeParseAsync(values)
+  validate()

validate()
  candidate = values without each record array where each value of each record is empty
              # empty = undefined, null, '', or an empty Set
  result = schema.parse(candidate)
  if result fails with an issue at an omitted record array   # the schema makes it required
    return schema.parse(values)                              # errors point at the item fields, as before
  return result

Form state	Before	After
Optional array, not filled in, item fields required	Error at items.0.name	Submits {}
Optional array, not filled in, item fields optional	Submits { items: [{}] }	Submits {}
Optional array, value typed, then cleared	Error at items.0.name	Submits {}
Optional array empty, a different field invalid	Errors on that field and on items.0.name	Error on that field only
Required array, not filled in	Error at items.0.name	No change
One record filled in, one empty	Error at items.1.name	No change

The form state does not change. Only the data given to the validation schema changes.

Evidence

• Before: new record array tests in Form.test.tsx fail on main:

  × should submit an optional record array that was not filled in, although its fields are required
  × should not submit a record with all values empty in place of an omitted record array
  × should omit a record array where the only value was entered and then cleared
  

  After: pnpm test: 42 files, 253 tests pass. pnpm lint passes.

Merge Danger

Door: two-way

Blast Radius: submitted data

• A form with an optional record array that the user did not fill in now submits no key for that field. Before, it submitted [{}] (optional item fields) or did not submit. A consumer that reads data.items[0] without a check must allow undefined.
• A record with only a false checkbox value is not empty.
• The schema can run two times on a submit that fails.

Closes #40

🤖 Generated with Claude Code

https://claude.ai/code/session_01W53iUP9ECVtoteopM7QtC7

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