Children required prop-types fire warning on create about prop-types

[ljharb]

No, you’re not correct. You control when it’s created - react controls when it’s mounted.

[ljharb]

This error comes from React, not this library.

However I'm pretty sure that propTypes fire when the element is created, not when it's rendered, so you can find the error sooner.

A better solution is to not render the Child elements at all when title is falsy.

Closing, since it's not a prop-types issue specifically.

[SonyaOrlova]

Hi, what do you mean by "when the element is created"? The element is not even mounted in this case, why propType is checked? Have the same problem

[ljharb]

They’ve always been checked when the element is created - which for jsx, is the moment the jsx is evaluated.

[SonyaOrlova]

thanks for feedback

it seems that the check is needed when the component is mounted, because for a developer the component exists when it is mounted - that is the moment we can control