DEV Community
dev.to › prithpalsooriya › how-to-type-react-defaultprops-ji6
How to Type React DefaultProps - DEV Community
July 22, 2021 - export interface ListProps { items: string[]; filterPredicate?: (item: string) => boolean; onSelect?: (item: string) => void; onMultiSelect?: (items: string[]) => void; createKey?: (item: string, index: number) => string; // ... a lot of props } class List extends React.Component<ListProps> { static defaultProps: Partial<ListProps> = { // defaults for most props except `items` // because we want it will always be required right??
Design decision: keep defaultProps for functional components
Since default props are a static ... Component.defaultProps.something or in a unit test. There is no way to take default values from function default values. In a recent article, I have an example that is based on default props and styled-components/emotion. // scroll down to the section React and Typescript ... More on github.com
React - Override Default Props
Hi, I want to learn how to show the default props on UI. For example in here, we have a default props called quantity and its set to 0. How can I use it in the Parent component so it can show the default value? Your cod… More on forum.freecodecamp.org
reactjs - How to define defaultProps in React 18 TypeScript without optionals - Stack Overflow
Using React functional components, it's recommended to no longer use Component.defaultProps. More on stackoverflow.com
How to declare nested default props as it's now deprecated ?
You need to add a default value for options and assign a different name to either the className inside label or inside input: const TextInput = ({ options: { withLabel = true, defaultLabelClass = true, defaultInputClass = true } = {}, label: { label = 'Label', className: labelClassname = undefined }, input: { type = 'text', name = 'input', id = 'input', placeholder = 'Placeholder', className = undefined , onChange = undefined}, }: TextInputProps) => { } TS playground More on reddit.com
Videos
03:38
React Default Props: The Ultimate Beginner's Guide ✨ - YouTube
Stop using defaultProps (React 18.3 preview)
06:35
ReactJS : Working With defaultProps - YouTube
React JS tutorial | Default Props In React JS
17:00
PropTypes & DefaultProps Tutorial: ReactJS PropTypes and DefaultProps ...
03:27
Stop using defaultProps (React 18.3 preview) - YouTube
React Native
reactnative.dev › docs › textinput
TextInput · React Native
2 weeks ago - A foundational component for inputting text into the app via a keyboard. Props provide configurability for several features, such as auto-correction, auto-capitalization, placeholder text, and different keyboard types, such as a numeric keypad.
GitHub
github.com › facebook › react › issues › 16970
Design decision: keep defaultProps for functional components · Issue #16970 · facebook/react
October 1, 2019 - const defaultProps = { Wrapper: styled.div``, }; type Props = typeof defaultProps & {}; const Component = (props: Props): JSX.Element => { const {Wrapper} = {...defaultProps, ...props}; return <Wrapper /> }; Component.defaultProps = defaultProps; export default Component;
Author marcelmokos
React
legacy.reactjs.org › docs › typechecking-with-proptypes.html
Typechecking With PropTypes – React
class Greeting extends React.Component { render() { return ( <h1>Hello, {this.props.name}</h1> ); } } // Specifies the default values for props: Greeting.defaultProps = { name: 'Stranger' }; // Renders "Hello, Stranger": const root = ReactDOM.createRoot(document.getElementById('example')); root.render(<Greeting />);
LogRocket
blog.logrocket.com › home › a complete guide to react default props
A complete guide to React default props - LogRocket Blog
September 2, 2024 - const ThemedButton = React.createClass({ // Component display name displayName: 'ThemedButton', // render() method render() { const { theme, label, ...props } = this.props; return <button className={`btn btn-${theme}`} {...props}>{ label }</button> }, // Set default props ThemedButton.defaultProps = { theme: "secondary", label: "Button Text" }; })
React TypeScript Cheatsheets
react-typescript-cheatsheet.netlify.app › typing defaultprops
Typing defaultProps | React TypeScript Cheatsheets
In that way we can extend defaultProps without any changes in the types! interface IMyComponentProps { firstProp?: string; secondProp: IPerson[]; } export class MyComponent extends React.Component<IMyComponentProps> { public static defaultProps: Partial<IMyComponentProps> = { firstProp: "default", }; }
React
legacy.reactjs.org › docs › react-component.html
React.Component – React
Normally you should try to avoid all uses of forceUpdate() and only read from this.props and this.state in render(). defaultProps can be defined as a property on the component class itself, to set the default props for the class.
Reddit
reddit.com › r/react › how to declare nested default props as it's now deprecated ?
r/react on Reddit: How to declare nested default props as it's now deprecated ?
November 12, 2023 -
Hi,
on a new project I have this warning :
"Support for defaultProps will be removed from function components in a future major release. Use JavaScript default parameters instead."
But I can't figure out how should I do to declare the default value ?
Here is one of my component that have nested props :
const TextInput = ({ options, label, input }: TextInputProps) => {// logic here}And I typed it like this :
export type TextInputProps = {
options?: {
withLabel?: boolean
defaultLabelClass?: boolean
defaultInputClass?: boolean
}
label: {
label: string
className?: string
}
input: {
type: string
name: string
for: string
id: string
className?: string
placeholder?: string
required?: boolean
onChange?: (e: React.ChangeEvent<HTMLInputElement>) => void
}
}
export const TextInputDefaultProps = {
options: {
withLabel: true,
defaultLabelClass: true,
defaultInputClass: true,
},
label: {
className: undefined,
},
input: {
className: undefined,
placeholder: undefined,
required: false,
onChange: undefined,
},
}I did try something like this but it does not work:
const TextInput = ({
options: { withLabel = true, defaultLabelClass = true, defaultInputClass = true },
label: { label = 'Label', className = undefined },
input: { type = 'text', name = 'input', id = 'input', placeholder = 'Placeholder', className = undefined , onChange = undefined},
}) => {So how are we suppose to deal with nested props ?
Thanks :)
Top answer 1 of 2
2
You need to add a default value for options and assign a different name to either the className inside label or inside input: const TextInput = ({ options: { withLabel = true, defaultLabelClass = true, defaultInputClass = true } = {}, label: { label = 'Label', className: labelClassname = undefined }, input: { type = 'text', name = 'input', id = 'input', placeholder = 'Placeholder', className = undefined , onChange = undefined}, }: TextInputProps) => { } TS playground
2 of 2
2
Look, I know this isn't the answer you are looking for but this component is doing way too much. Not sure what the use case is here but this could be simplified by using Composition and would avoid the headache of nested defaults
GitHub
github.com › jsx-eslint › eslint-plugin-react › issues › 2396
`defaultProps` rule to be deprecated on function components · Issue #2396 · jsx-eslint/eslint-plugin-react
August 29, 2019 - defaultProps on function components is getting deprecated by React (see: facebook/react#16210) For this rule to follow suit, it should only be triggered when missing from class components. The official recommendation in future versions o...
Author amypellegrini
GitHub
github.com › emotion-js › emotion › issues › 2573
Include `.defaultProps` in the documentation · Issue #2573 · emotion-js/emotion
November 29, 2021 - Include .defaultProps in the documentation#2573 · Copy link · Labels · feature request · drldavis · opened · on Nov 29, 2021 · Issue body actions · Description: It took me forever to figure out how to set default props with emotion's styled components.
Author drldavis