Have this custom TouchableOpacity function component, but for the style prop I'm getting a TS error
import { StyleSheet, Pressable, PressableProps, GestureResponderEvent } from 'react-native';
export default function TouchableOpacity(props: PressableProps) {
const { style, onPress, children } = props;
return (
<Pressable
onPress={(event: GestureResponderEvent) => {
onPress?.(event);
}}
style={({ pressed }) => [style, pressed ? styles.buttonPressedOpacity : null]}>
{children}
</Pressable>
);
}
const styles = StyleSheet.create({
buttonPressedOpacity: {
opacity: 0.5,
},
});
Here is the complete TS complaint:
TS2322: Type '({ pressed }: PressableStateCallbackType) => (StyleProp | ((state: PressableStateCallbackType) => StyleProp<...>) | { ...; })[]' is not assignable to type 'StyleProp | ((state: PressableStateCallbackType) => StyleProp)'. Type '({ pressed }: PressableStateCallbackType) => (StyleProp | ((state: PressableStateCallbackType) => StyleProp<...>) | { ...; })[]' is not assignable to type '(state: PressableStateCallbackType) => StyleProp'. Type '(StyleProp | ((state: PressableStateCallbackType) => StyleProp) | { opacity: number; })[]' is not assignable to type 'StyleProp'. Type '(StyleProp | ((state: PressableStateCallbackType) => StyleProp) | { opacity: number; })[]' is not assignable to type 'RecursiveArray<ViewStyle | Falsy | RegisteredStyle>'. The types returned by 'pop()' are incompatible between these types. Type 'StyleProp | ((state: PressableStateCallbackType) => StyleProp) | { opacity: number; }' is not assignable to type 'ViewStyle | Falsy | RegisteredStyle | RecursiveArray<ViewStyle | Falsy | RegisteredStyle> | readonly (ViewStyle | ... 1 more ... | RegisteredStyle<...>)[]'. Type '(state: PressableStateCallbackType) => StyleProp' is not assignable to type 'ViewStyle | Falsy | RegisteredStyle | RecursiveArray<ViewStyle | Falsy | RegisteredStyle> | readonly (ViewStyle | ... 1 more ... | RegisteredStyle<...>)[]'. index.d.ts(542, 5): The expected type comes from property 'style' which is declared here on type 'IntrinsicAttributes & PressableProps & RefAttributes'
The issue here is the type of style
which is received from PressableProps
and its concatination with the function you provide to the style
prop of Pressable
. The type of style
is as follows:
const style: StyleProp<ViewStyle> | ((state: PressableStateCallbackType) => StyleProp<ViewStyle>)
The style is either StyleProp<ViewStyle>
or a function that receives a PressableStateCallbackType
as an input parameter.
However, the type of the style
prop of Pressable
is as follows:
PressableProps.style?: StyleProp<ViewStyle> | ((state: PressableStateCallbackType) => StyleProp<ViewStyle>)
Thus, the following would work:
<Pressable
style={style}>
</Pressable>
Since the types match.
However, if you provide the function that receives PressableStateCallbackType
yourself and you want to combine this with an additional style, then you have two possibilities.
You know that style
is indeed the mentioned function
const _style = style as (pressed: PressableStateCallbackType) => StyleProp<ViewStyle>
<Pressable
style={(state) => [_style(state), state.pressed && styles.buttonPressedOpacity]}>
</Pressable>
You know that style
is a StyleProp<ViewStyle>
<Pressable
style={({pressed}) => [style as StyleProp<ViewStyle>, pressed && styles.buttonPressedOpacity]}>
</Pressable>
You do not know
<Pressable
style={(state) => [typeof style === 'function' ? style(state) : style, state.pressed && styles.buttonPressedOpacity]}>
</Pressable>
Edit: Actually, if you know the type and it is your custom component, then you could change the typing of the props of TouchableOpacity
.