Commit 79fa8ec

A write outside the setter, such as `state.todos.push(todo)`, is ignored, and development reports [`[STORE_WRITE_OUTSIDE_SETTER]`](/reference/solid-js/diagnostics/store-write-outside-setter).

With `onChange` and a bound `value`, keep the typed text in a draft signal written from `onInput`: if another attribute in the same template changes, the binding re-runs and erases text that was never committed.

| React habit | What happens in Solid | What reports it |

| ---------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ |

| Destructuring props, or reading a prop or signal at the top of the component | The value never updates | [`STRICT_READ_UNTRACKED`](/reference/solid-js/diagnostics/strict-read-untracked) |

| An early `return` that depends on props | The component stays on its first branch | [`STRICT_READ_UNTRACKED`](/reference/solid-js/diagnostics/strict-read-untracked) |

| Calling a translator in the body: `const label = t("save")` | The text keeps its first language | [`STRICT_READ_UNTRACKED`](/reference/solid-js/diagnostics/strict-read-untracked) if `t` reads a signal; nothing if it reads a plain variable |

| Passing the accessor: `value={count}` | The child receives a function | A TypeScript error |

| Building fresh objects for list items on each update | `For` recreates every row, and focus and input state are lost | [`UNSTABLE_LIST_IDENTITY`](/reference/solid-js/diagnostics/unstable-list-identity) (attribution); key by ID with `keyed={(item) => item.id}` |

| Copying a derived value into state from an effect | The copy is one update behind | [`EFFECT_RELAY_TEAR`](/reference/solid-js/diagnostics/effect-relay-tear) (attribution) |

| Setting state during render | Throws | [`REACTIVE_WRITE_IN_OWNED_SCOPE`](/reference/solid-js/diagnostics/reactive-write-in-owned-scope) |

| Translating `useEffect(fn)` to `createEffect(fn)` | Throws | [`MISSING_EFFECT_FN`](/reference/solid-js/diagnostics/missing-effect-fn) |

| Reading a signal inside the effect function | The effect does not re-run when it changes | [`STRICT_READ_UNTRACKED`](/reference/solid-js/diagnostics/strict-read-untracked) |

| Reading a signal after `await` in an async memo | The memo does not re-run when it changes | [`UNTRACKED_READ_AFTER_AWAIT`](/reference/solid-js/diagnostics/untracked-read-after-await) (V8 engines) |

| Writing a store outside its setter | The write is ignored | [`STORE_WRITE_OUTSIDE_SETTER`](/reference/solid-js/diagnostics/store-write-outside-setter) |

| `createContext<T \| undefined>(undefined)` for an optional context | `useContext` throws without a provider | `ContextNotFoundError`; use `null` as the default |

| `onClick={ready() ? save : wait}` | The first handler stays bound | Nothing; decide inside one handler |

| A lowercase `onclick` | The handler is never attached | [`LOWERCASE_EVENT_ATTRIBUTE`](/reference/solid-js/diagnostics/lowercase-event-attribute) |

| A controlled input whose handler rejects a keystroke | The rejected text stays in the field | Nothing; assign `event.currentTarget.value` in the handler |

| `value={props.name} onChange={commit}` with no draft signal | When another attribute in the same template changes, the binding re-runs and erases the typed text | [`UNCOMMITTED_INPUT_OVERWRITTEN`](/reference/solid-js/diagnostics/uncommitted-input-overwritten); write a draft signal from `onInput`, or use `defaultValue` |