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# Generic React Native Box
Often in React Native, you'll want to create a generic box component that can be styled and reused throughout your app. This box in questions allows us to sourrund other components with a box that has a border, padding, and margin that we can apply. In this case they can be applied directly or via a style object.
## Component
```tsx:line-numbers [Box.tsx]
import { ReactNode } from "react";
import { StyleProp, StyleSheet, View, ViewStyle } from "react-native";
type BoxProps = {
children?: ReactNode;
fullWidth?: boolean;
style?: StyleProp<ViewStyle>
} & ViewStyle;
const Box = ({ children, style, ...restProps }: BoxProps) => {
const boxStyle = getBoxStyle(restProps);
return <View style={[boxStyle.box, style]}>{children}</View>;
};
const getBoxStyle = (restProps: Omit<BoxProps, "children">) =>
StyleSheet.create({
box: {
width: restProps.fullWidth ? "100%" : "auto",
...restProps,
},
});
export default Box;
```
## Usage
```tsx
<Box
fullWidth
style={{
backgroundColor: "red",
padding: 10,
margin: 10,
borderRadius: 5,
}}
/>
<Box backgroundColor="red" borderColor="black" borderWidth={1}>
<Text>Some text</Text>
</Box>
```

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# Generic React Native Stacks
The generic stack components are useful tools when creating layouts, as we can re-use these components to apply consistent spacing and alignment to our components. In this case, we'll create a `VStack` and an `HStack` component that allows us to stack components vertically or horizontally depnding on the component used.
## Components
```tsx:line-numbers
import { StyleSheet, View, ViewStyle } from "react-native";
type VStackProps = {
gap?: number;
children?: React.ReactNode;
} & ViewStyle;
const VStack = ({ gap, children, ...restProps }: VStackProps) => {
const style = vStackStyle(gap ?? 5, restProps);
return <View style={style.vStack}>{children}</View>;
};
const vStackStyle = (gap: number, restProps: ViewStyle) =>
StyleSheet.create({
vStack: {
flexDirection: "column",
gap: gap,
...restProps
},
});
export default VStack;
```
```tsx:line-numbers
import { StyleSheet, View, ViewStyle } from "react-native";
type HStackProps = {
gap?: number;
children: React.ReactNode;
} & ViewStyle;
const HStack = ({ gap, children, ...restProps }: HStackProps) => {
const style = hStackStyle(gap ?? 5, restProps);
return <View style={style.hStack}>{children}</View>;
};
const hStackStyle = (gap: number, restProps: ViewStyle) =>
StyleSheet.create({
hStack: {
flexDirection: "row",
gap: gap,
...restProps
},
});
export default HStack;
```
## Usage
```tsx
<VStack gap={10}>
<Text>First</Text>
<Text>Second</Text>
<Text>Third</Text>
</VStack>
<HStack gap={10}>
<Text>First</Text>
<Text>Second</Text>
<Text>Third</Text>
</HStack>
```

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# Generic React Native Text
The generic text component is a useful tool so apply consistent styling to text components throughout your app. In this case, we'll create a `Text` component that allows us to apply consistent styling to text components.
## Component
::: code-group
```tsx:line-numbers [Text.tsx]
import { TextType } from './types';
import { ReactNode, forwardRef } from 'react';
import { Text as NativeText, TextStyle, StyleSheet, StyleProp } from 'react-native';
type TextProps = {
type?: TextType;
children: ReactNode;
style?: StyleProp<TextStyle>;
} & TextStyle;
const Text = forwardRef<NativeText, TextProps>(function Text(
{ type, children, style, ...restProps }: TextProps,
ref
) {
const textStyles = textStyle(type ?? 'standard', restProps);
return (
<NativeText ref={ref} style={[textStyles.text, style]}>
{children}
</NativeText>
);
});
const textStyle = (type: TextType, restProps: TextStyle) => {
let styles = {};
switch (type) {
case 'title':
styles = {
fontSize: 32,
fontWeight: 'bold',
color: 'black',
};
break;
case 'title2':
styles = {
fontSize: 25,
fontWeight: 'bold',
color: 'black',
};
break;
case 'subtitle':
styles = {
fontSize: 12,
fontWeight: 'normal',
color: 'darkgray',
};
break;
case 'link':
styles = {
fontSize: 14,
fontWeight: 'normal',
color: 'blue',
textDecorationLine: 'underline',
};
break;
case 'standard':
default:
styles = {
fontSize: 14,
fontWeight: 'normal',
color: 'black',
};
break;
}
return StyleSheet.create({
text: {
...styles,
...restProps,
},
});
};
export default Text;
```
```tsx:line-numbers [types.ts]
export type TextType = "standard" | "title" | "title2" | "subtitle" | "link";
```
:::
## Usage
```tsx
<Text type="title">Title</Text>
<Text type="subtitle">Subtitle</Text>
<Text type="link">Link</Text>
<Text>Standard</Text>
```

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# React Native Snippets and Musings
#### [Generic Box](./generic-box.md)
#### [Generic Stacks](./generic-stacks.md)
#### [Generic Text](./generic-text.md)