Homepage (site/index.html): integration-v14 promoted, Writings section integrated with 33 pieces clustered by type (stories/essays/miscellany), Writings welcome lightbox, content frame at 98% opacity. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
49 lines
1.2 KiB
Markdown
49 lines
1.2 KiB
Markdown
---
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title: Use .get() and .set() for Reanimated Shared Values (not .value)
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impact: LOW
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impactDescription: required for React Compiler compatibility
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tags: reanimated, react-compiler, shared-values
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---
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## Use .get() and .set() for Shared Values with React Compiler
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With React Compiler enabled, use `.get()` and `.set()` instead of reading or
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writing `.value` directly on Reanimated shared values. The compiler can't track
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property access—explicit methods ensure correct behavior.
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**Incorrect (breaks with React Compiler):**
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```tsx
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import { useSharedValue } from 'react-native-reanimated'
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function Counter() {
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const count = useSharedValue(0)
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const increment = () => {
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count.value = count.value + 1 // opts out of react compiler
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}
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return <Button onPress={increment} title={`Count: ${count.value}`} />
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}
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```
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**Correct (React Compiler compatible):**
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```tsx
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import { useSharedValue } from 'react-native-reanimated'
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function Counter() {
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const count = useSharedValue(0)
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const increment = () => {
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count.set(count.get() + 1)
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}
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return <Button onPress={increment} title={`Count: ${count.get()}`} />
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}
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```
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See the
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[Reanimated docs](https://docs.swmansion.com/react-native-reanimated/docs/core/useSharedValue/#react-compiler-support)
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for more.
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