fix: using get with items with onChange is now correctly typed
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🦋 Changeset detectedLatest commit: 96e1c1a The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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Co-authored-by: gsimone <[email protected]>
Co-authored-by: gsimone <[email protected]>
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@copilot was this just a typescript error or is it not possible to do a get() like the user complains? |
This was purely a TypeScript type inference error. At runtime, |
gsimone
changed the title
onChange handlers in folder items
gsimone
changed the title
onChange handlers in folder itemsget with items with onChange is now correctly typed
WalkthroughThe PR fixes TypeScript type inference for the Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes
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Pre-merge checks and finishing touches✅ Passed checks (5 passed)
✨ Finishing touches
🧪 Generate unit tests (beta)
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Actionable comments posted: 2
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📒 Files selected for processing (3)
.changeset/dirty-radios-laugh.md(1 hunks)packages/leva/src/types/public.test.ts(1 hunks)packages/leva/src/types/public.ts(1 hunks)
🧰 Additional context used
🪛 Biome (2.1.2)
packages/leva/src/types/public.test.ts
[error] 142-142: This hook is being called conditionally, but all hooks must be called in the exact same order in every component render.
For React to preserve state between calls, hooks needs to be called unconditionally and always in the same order.
See https://reactjs.org/docs/hooks-rules.html#only-call-hooks-at-the-top-level
(lint/correctness/useHookAtTopLevel)
[error] 158-158: This hook is being called conditionally, but all hooks must be called in the exact same order in every component render.
For React to preserve state between calls, hooks needs to be called unconditionally and always in the same order.
See https://reactjs.org/docs/hooks-rules.html#only-call-hooks-at-the-top-level
(lint/correctness/useHookAtTopLevel)
[error] 174-174: This hook is being called conditionally, but all hooks must be called in the exact same order in every component render.
For React to preserve state between calls, hooks needs to be called unconditionally and always in the same order.
See https://reactjs.org/docs/hooks-rules.html#only-call-hooks-at-the-top-level
(lint/correctness/useHookAtTopLevel)
🪛 GitHub Check: Build, lint, and test
packages/leva/src/types/public.test.ts
[failure] 174-174:
Argument of type 'FunctionReturnType<{ a: FolderInput<{ b1: number; a1: number; }>; }>' is not assignable to parameter of type '[{ a1: number; }, (value: { a1?: number | undefined; b1?: number | undefined; b2?: string | undefined; }) => void, <T extends "a1" | "b1" | "b2">(path: T) => { a1: number; b1: number; b2: string; }[T]]'.
[failure] 158-158:
Argument of type 'FunctionReturnType<{ a: FolderInput<{ a1: number; }>; }>' is not assignable to parameter of type '[{ a1: number; }, (value: { a1?: number | undefined; a2?: string | undefined; }) => void, <T extends "a1" | "a2">(path: T) => { a1: number; a2: string; }[T]]'.
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
- GitHub Check: chromatic
| // test that get function includes transient items in folders | ||
| expectType< | ||
| [ | ||
| { a1: number }, | ||
| (value: { a1?: number; a2?: string }) => void, | ||
| <T extends 'a1' | 'a2'>(path: T) => { a1: number; a2: string }[T] | ||
| ] | ||
| >( | ||
| useControls(() => ({ | ||
| a: folder({ | ||
| a1: 1, | ||
| a2: { value: 'transient', onChange: () => {} }, | ||
| }), | ||
| })) | ||
| ) | ||
|
|
||
| // nested folders with onChange | ||
| expectType< | ||
| [ | ||
| { a1: number }, | ||
| (value: { a1?: number; b1?: number; b2?: string }) => void, | ||
| <T extends 'a1' | 'b1' | 'b2'>(path: T) => { a1: number; b1: number; b2: string }[T] | ||
| ] | ||
| >( | ||
| useControls(() => ({ | ||
| a: folder({ | ||
| a1: 1, | ||
| a2: { value: 'transient', onChange: () => {} }, | ||
| b: folder({ | ||
| b1: { value: 10 }, | ||
| b2: { value: 'also transient', onChange: () => {} }, | ||
| }), | ||
| }), | ||
| })) | ||
| ) |
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🧩 Analysis chain
Type assertions currently fail – fix the folder typing first.
The new expectType blocks don’t compile right now because useControls(...)[2] still reports only 'a1' | 'b1' paths; 'a2'/'b2' are dropped by the existing types. Until the underlying Tree/folder typing is fixed, these tests will keep failing (yarn test:types hits the same FunctionReturnType error shown in CI). Please address the root cause in the type definitions and re-run the type tests.
After updating the types, re-check with:
🏁 Script executed:
#!/bin/bash
yarn test:typesLength of output: 747
---
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```shell
#!/bin/bash
# Find TypeScript/JS files related to useControls and type definitions
fd -e ts -e tsx | grep -E "(useControls|types|folder)" | head -20
Length of output: 861
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#!/bin/bash
# Look at the full test file to understand context
cat packages/leva/src/types/public.test.tsLength of output: 6861
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#!/bin/bash
# Search for useControls implementation
rg -n "export.*useControls" --type ts --type tsx -A 5Length of output: 27
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#!/bin/bash
# Search for folder function/type definition
rg -n "export.*folder" --type ts --type tsx -A 5 | head -50Length of output: 27
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#!/bin/bash
# Look at the type definitions
cat packages/leva/src/types/public.tsLength of output: 10685
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#!/bin/bash
# Look at internal types
cat packages/leva/src/types/internal.tsLength of output: 3049
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#!/bin/bash
# Look at folder.ts implementation
cat packages/leva/src/helpers/folder.tsLength of output: 403
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#!/bin/bash
# Search for Tree type definition
rg -n "type Tree" packages/leva/src/types/ -A 10Length of output: 1878
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#!/bin/bash
# Search for the get function type signature
rg -n "get\s*\(" packages/leva/src/types/public.ts -B 3 -A 3Length of output: 168
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#!/bin/bash
# Look at useControls implementation for type signatures
cat packages/leva/src/useControls.tsLength of output: 8864
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#!/bin/bash
# Look at headless useControls
cat packages/leva/src/headless/useControls.tsLength of output: 2244
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#!/bin/bash
# Search for useControls type signature in type files
rg -n "useControls" packages/leva/src/types/ -B 2 -A 8Length of output: 14199
Type assertions fail due to folder() filtering transient items too early.
The getter function type correctly expects transient items (line 16 of useControls.ts uses SchemaToValues<S, true>), but folder() (folder.ts) returns FolderInput<SchemaToValues<S>>, which prematurely filters out transient items. When Tree later tries to process the folder schema with IncludeTransient=true, those items are already gone from the type.
Fix: Change folder.ts line 4 from FolderInput<SchemaToValues<S>> to FolderInput<S> so the raw schema reaches Tree, which can then apply the IncludeTransient flag correctly.
🧰 Tools
🪛 Biome (2.1.2)
[error] 158-158: This hook is being called conditionally, but all hooks must be called in the exact same order in every component render.
For React to preserve state between calls, hooks needs to be called unconditionally and always in the same order.
See https://reactjs.org/docs/hooks-rules.html#only-call-hooks-at-the-top-level
(lint/correctness/useHookAtTopLevel)
[error] 174-174: This hook is being called conditionally, but all hooks must be called in the exact same order in every component render.
For React to preserve state between calls, hooks needs to be called unconditionally and always in the same order.
See https://reactjs.org/docs/hooks-rules.html#only-call-hooks-at-the-top-level
(lint/correctness/useHookAtTopLevel)
🪛 GitHub Check: Build, lint, and test
[failure] 174-174:
Argument of type 'FunctionReturnType<{ a: FolderInput<{ b1: number; a1: number; }>; }>' is not assignable to parameter of type '[{ a1: number; }, (value: { a1?: number | undefined; b1?: number | undefined; b2?: string | undefined; }) => void, <T extends "a1" | "b1" | "b2">(path: T) => { a1: number; b1: number; b2: string; }[T]]'.
[failure] 158-158:
Argument of type 'FunctionReturnType<{ a: FolderInput<{ a1: number; }>; }>' is not assignable to parameter of type '[{ a1: number; }, (value: { a1?: number | undefined; a2?: string | undefined; }) => void, <T extends "a1" | "a2">(path: T) => { a1: number; a2: string; }[T]]'.
🤖 Prompt for AI Agents
In packages/leva/src/folder.ts around line 4, folder() currently types its
argument as FolderInput<SchemaToValues<S>>, which strips transient items too
early; change the signature to FolderInput<S> so the raw schema (including
transient markers) is passed through to Tree and the IncludeTransient flag can
be applied later.
| // recursively process each item in the folder with Tree to propagate IncludeTransient flag, | ||
| // which ensures items with onChange inside folders are correctly handled for the get function | ||
| 0: Leaf extends { schema: infer Schema } | ||
| ? { [Key in keyof Schema]: Join<Schema, Key, Tree<IncludeTransient, Schema[Key], Key>> }[keyof Schema] | ||
| : never |
There was a problem hiding this comment.
Folder recursion still hides transient keys from get() typing.
Even with this recursion, FolderInput’s schema generic has already stripped transient entries (e.g. it instantiates as { a1: number } in the new tests), so Schema[Key] never exposes 'a2' / 'b2'. As a result the Tree walk cannot reintroduce those keys and useControls(...)[2] still rejects get('a2'), exactly as CI reports (FunctionReturnType<{ a: FolderInput<{ a1: number; }>; }> not assignable …). The patch therefore doesn’t fix #447 and the added tests fail. Please propagate the original folder schema—e.g. carry both the value shape and the raw schema (including transients) through FolderInput—or otherwise ensure Tree<IncludeTransient, …> receives a type that still contains transient keys so the union can include them.
🤖 Prompt for AI Agents
In packages/leva/src/types/public.ts around lines 244 to 248, the recursive Tree
walk is using the FolderInput's already-stripped schema so transient keys are
lost and get() typings can’t include them; update the FolderInput type (or the
place where folder schemas are passed into Tree) to carry both the processed
value shape and the original/raw schema (including transient entries) so
Tree<IncludeTransient, ...> receives the raw schema with transient keys intact;
change FolderInput generics to accept and preserve a second type parameter for
the raw schema (or embed a RawSchema field) and thread that raw schema into the
Tree recursion so the union can reintroduce transient keys for get().
Items with
onChangehandlers inside folders were excluded from thegetfunction's type signature, causing TypeScript errors when accessing them.Changes
packages/leva/src/types/public.tsTreetype case 0 to recursively process folder items withTree<IncludeTransient, Schema[Key], Key>instead of passing rawSchema[Key][keyof Schema]to flatten folder structure into union typeIncludeTransientflag now propagates correctly through nested folderspackages/leva/src/types/public.test.tsgetfunction includes transient paths while controls exclude themResult
Original prompt
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Summary by CodeRabbit
getfunction when used with items containingonChangehandlers, ensuring accurate type checking.