Optimal Methods for Defining Optional PropTypes in React

To address the issue, one possible solution is to define a default function for the specified parameter. This approach is suggested in a GitHub issue (https://github.com/yannickcr/eslint-plugin-react/issues/1067), although there may still be some challenges in implementing it (as noted in https://facebook.github.io/react/docs/typechecking-with-proptypes.html). Another option is to use a third-party library like react-required-if (https://github.com/thejameskyle/react-required-if), which provides a convenient helper function for handling conditional propTypes. Finally, as an additional suggestion to a previous answer (from @chickenchilli), you could create a separate helper function in a file like conditionalPropType.js and import it into your component file (e.g. MyComponent.js).


Solution 1:

static propTypes = {
  onSort: PropTypes.oneOfType([
    PropTypes.func,
    PropTypes.any
  ])
}

Verify the existence of

onSort

.

if (this.props.onSort) {
  //do something
}

OR

Provide a definition for the code

propTypes

in the following manner:

static propTypes = {
  onSort: PropTypes.func
}

Subsequently, establish a preset value for

onSort

as follows:

static defaultProps = {
   onSort: () => null
}


Solution 2:


The proposal recommends establishing a default function, which aligns with the suggestion given on this link: https://github.com/yannickcr/eslint-plugin-react/issues/1067.

Cmp.defaultProps = {
    onChange: () => {}
}

I am still attempting to make this function, and I would appreciate it if you could update me if you make any progress.


Solution 3:

static defaultProps = {
  onSort: PropTypes.func,
}
if(this.props.onSort){
  //do something
}


Have you considered ensuring the property is valid prior to utilizing it?

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