fix(sql-orm-client): reject unsupported nested create inputs

[StevenMcClankerton]

Linked issue

n/a — small change

At a glance

userCollection.upsert({
  create: {
    id: 'user_001',
    name: 'Alice',
    email: 'alice@example.com',
    active: true,
    metadata: {},
    // @ts-expect-error upsert create does not support relation callbacks
    posts: createNestedPosts,
  },
  update: { name: 'Alice Updated' },
})

Before this change, relation callbacks typechecked in upsert.create and the batch-create APIs even though those paths do not execute the nested mutation graph.

Decision

This PR makes upsert({ create }), createAll(), and createAndCount() accept only scalar create fields while preserving relation callbacks for ordinary create() calls. The scalar input resolves namespace and polymorphic variant fields in the same way as the existing relation-enabled create input.

Reviewer notes

• This is a compile-time correction: calls that supplied nested relation callbacks to upsert.create, createAll(), or createAndCount() now fail typechecking instead of promising unsupported behavior.
• The negative test first types createNestedPosts as a valid relation callback, ensuring its @ts-expect-error guards the rejected posts property rather than an incidental callback-parameter error.
• Nested relation execution inside upsert remains a separate feature requiring transactional branch-aware mutation orchestration.

How it fits together

1. types.ts extracts the scalar field composition from CreateInput; CreateInput continues adding relation mutation fields for supported create operations.
2. ResolvedScalarCreateInput applies the existing polymorphic discriminator and variant-field rules without adding relation fields.
3. collection.ts uses that scalar-only type for upsert().create, createAll(), #createAllWithAnnotations(), and createAndCount(), including the collection namespace state.
4. generated-contract-types.test-d.ts proves scalar inputs remain accepted by upsert and batch creates while nested relation callbacks are rejected.

Behavior changes & evidence

• Nested relation callbacks under upsert.create, createAll(), and createAndCount() now produce TS2353. The API restriction is implemented in types.ts and collection.ts, with regression coverage in generated-contract-types.test-d.ts.
• Nested relation callbacks under ordinary create() remain supported. The relation-enabled CreateInput is preserved, and the existing nested-post create assertion in generated-contract-types.test-d.ts continues to pass.

Testing performed

• pnpm typecheck in packages/3-extensions/sql-orm-client
• pnpm test in packages/3-extensions/sql-orm-client — 70 files and 771 tests passed; no type errors
• pnpm build in packages/3-extensions/sql-orm-client
• pnpm lint in packages/3-extensions/sql-orm-client — passed with 15 pre-existing informational bare-cast findings
• git diff --check

Skill update

n/a — this corrects the TypeScript surface to match existing runtime support; it does not introduce a new supported workflow that an upgrade skill must teach.

Alternatives considered

• Execute nested creates from upsert and batch creates. This would require branch-aware or per-row multi-statement transactional orchestration and is larger than correcting the current false type promise.
• Omit relation keys directly from ResolvedCreateInput. A dedicated scalar composition keeps scalar requirements explicit and preserves the existing namespace and polymorphic variant behavior without depending on relation-key subtraction.

Checklist

• All commits are signed off (git commit -s) per the DCO.
• I read CONTRIBUTING.md and the change is scoped to one logical concern.
• Tests are updated.
• The PR title follows the conventional-commit format documented in CONTRIBUTING.md; no Linear ticket is attached to this small fix.
• The Skill update section above is filled in.

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---

📝 Walkthrough

Walkthrough

The SQL ORM client now separates relation-enabled create inputs from scalar-only inputs. Create operations use namespace-aware scalar input resolution, including polymorphic variants. Type tests verify scalar acceptance and relation callback rejection.

Changes

Create input typing

Layer / File(s)	Summary
Create input contracts packages/3-extensions/sql-orm-client/src/types.ts	CreateInput now includes create-time relation mutation fields. ResolvedScalarCreateInput resolves scalar fields for selected variants and namespaces.
Scalar create operation contracts packages/3-extensions/sql-orm-client/src/collection.ts, packages/3-extensions/sql-orm-client/test/generated-contract-types.test-d.ts	create(), createAll(), createAndCount(), and upsert() use scalar-only resolved inputs. Type tests accept scalar fields and reject relation callbacks.

Estimated code review effort: 2 (Simple) | ~15 minutes

Merge Risk: ⚪ Minimal · up to a110b

This localized TypeScript change prevents unsupported nested relation callbacks in upsert creation while preserving ordinary nested creates; no actionable merge-blocking risk remains after normal checks and review.

Suggested reviewers: aqrln, tensordreams

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 3…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: rejecting unsupported nested create inputs in the SQL ORM client.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 3 files.

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commit: b760a42

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Actionable comments posted: 1

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Inline comments:
In `@packages/3-extensions/sql-orm-client/src/types.ts`:
- Around line 1309-1314: Update the batch-create API types and paths for
createAll(), `#createAllWithAnnotations`(), and createAndCount() to use
ResolvedScalarCreateInput rather than ResolvedCreateInput, excluding relation
callbacks from bulk inputs. Preserve CreateInput for single-record nested
mutation support and avoid introducing nested-mutation execution into batch
operations.

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• packages/3-extensions/sql-orm-client/src/collection.ts
• packages/3-extensions/sql-orm-client/src/types.ts
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[github-actions]

size-limit report 📦

Path	Size
postgres / no-emit	174.86 KB (0%)
postgres / emit	152.08 KB (0%)
mongo / no-emit	101.09 KB (0%)
mongo / emit	90.95 KB (0%)
cf-worker / no-emit	198.74 KB (0%)
cf-worker / emit	173.36 KB (0%)