Working with a function in the stylesheet of TypeScript in React Native allows for dynamic styling

Question

Working with a function in the stylesheet of TypeScript in React Native allows for dynamic styling

When attempting to use variables in my StyleSheet file, I encounter a type error even though the UI works fine. Any suggestions on how to resolve this issue?

type buttonStyle = (height: number, width: string, color: string) => ViewStyle;

export type Styles = {
  button: buttonStyle;
};


export default StyleSheet.create<Styles>({
  button: (height: number, width: string, color: string) => ({
    height: height,
    width: width,
    backgroundColor: color,
    alignItems: 'center',
    justifyContent: 'center',
    borderRadius: 10,
  }),
});

The error message related to types is as follows:

Type 'Styles' does not satisfy the constraint 'NamedStyles<any> | NamedStyles<Styles>'.
  Type 'Styles' is not assignable to type 'NamedStyles<Styles>'.
    Types of property 'button' are incompatible.
      Type 'buttonStyle' is not assignable to type 'ViewStyle | TextStyle | ImageStyle

typescript react-native react-native-stylesheet

Answer 1

Answer №1

To define a constant style, you can use the StyleSheet.create() method outside of your component:

const customStyles = ((height: number, width: string, color: string)) => StyleSheet.create({
    btn: {
        height: height,
        width: width,
        backgroundColor: color,
        alignItems: 'center',
        justifyContent: 'center',
        borderRadius: 10,
    }
});

Then, you can apply this style in your component like so:

<Button style={customStyles(height, width, color).btn} />

Answer 2

To define a constant style, you can use the StyleSheet.create() method outside of your component:

const customStyles = ((height: number, width: string, color: string)) => StyleSheet.create({
    btn: {
        height: height,
        width: width,
        backgroundColor: color,
        alignItems: 'center',
        justifyContent: 'center',
        borderRadius: 10,
    }
});

Then, you can apply this style in your component like so:

<Button style={customStyles(height, width, color).btn} />

Answer 3

Answer №2

const styles = StyleSheet.create<CustomStyles | any>({
  customButton: (height: number, width: string, color: string) => ({
    height: height,
    width: width,
    backgroundColor: color,
    alignItems: 'center',
    justifyContent: 'center',
    borderRadius: 10,
  }),
});

Remember to include the any type, just like in this example.

StyleSheet.create<CustomStyles | any>

Answer 4

const styles = StyleSheet.create<CustomStyles | any>({
  customButton: (height: number, width: string, color: string) => ({
    height: height,
    width: width,
    backgroundColor: color,
    alignItems: 'center',
    justifyContent: 'center',
    borderRadius: 10,
  }),
});

Remember to include the any type, just like in this example.

StyleSheet.create<CustomStyles | any>

Answer 5

Answer №3

It appears that StyleSheet does not include a function type, so I have resolved this issue using the following method.

CSS file

import type { ViewStyle } from 'react-native';

const styles = {
  button: (height: number, width: string, color: string): ViewStyle => ({
    height: height,
    width: width,
    backgroundColor: color,
    alignItems: 'center',
    justifyContent: 'center',
    borderRadius: 10,
  }),
};

export default styles;

There is no requirement to specify the styles type explicitly.

Answer 6

It appears that StyleSheet does not include a function type, so I have resolved this issue using the following method.

CSS file

import type { ViewStyle } from 'react-native';

const styles = {
  button: (height: number, width: string, color: string): ViewStyle => ({
    height: height,
    width: width,
    backgroundColor: color,
    alignItems: 'center',
    justifyContent: 'center',
    borderRadius: 10,
  }),
};

export default styles;

There is no requirement to specify the styles type explicitly.

Working with a function in the stylesheet of TypeScript in React Native allows for dynamic styling

Answer №1

Answer №2

Answer №3

Similar questions

Monitor and compile numerous directories simultaneously in TypeScript (monorepo)

Issue rendering React.useEffect and mapStateToProps in React Native

Create a custom data type that consists of a specific set of keys from an object

After submitting a multi-image form from Angular, the "req" variable is not defined

Having trouble loading the script from the assets 'index.android.bundle'? Ensure that your bundle is properly packaged or that you have a packager server running

Angular 2 Login Component Featuring Customizable Templates

Expanding Angular FormGroup Models with TypeScript

Produce new lines of code using the vscode.window.activeTextEditor.edit method in Visual Studio Code

Array of generic types in Typescript

Node OOM Error in Webpack Dev Server due to Material UI Typescript Integration

I'm encountering difficulties utilizing ternary operators in TypeScript

What are the steps for initiating a React Native project with Yarn?

What is the best way to explain the concept of type indexing in TypeScript using its own keys?

What is the best way to verify that I am receiving the 'jwt' token in my code?

Angular 6 Material now allows for the selection of a mat-tab-link by displaying an underlining bar

Dynamic starting point iteration in javascript

Menu with options labeled using IDs in FluentUI/react-northstar

Navigating through an interface array using *ngFor in TypeScript

I'm perplexed as to why my react application appears perfectly on certain devices, yet on newer ones it simply showcases a blank white screen

Using Material UI with React and TypeScript