Add ReactIs.isValidElementType() #12483
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Per the conversation on facebook#12453, there are a number of third-party libraries (particularly those that generate higher-order components) that are performing suboptimal validation of element types. This commit exposes a function that can perform the desired check without depending upon React internals.
You could put it in |
bvaughn
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gaearon
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Thanks for the quick review. |
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* Add React.isValidElementType() Per the conversation on facebook#12453, there are a number of third-party libraries (particularly those that generate higher-order components) that are performing suboptimal validation of element types. This commit exposes a function that can perform the desired check without depending upon React internals. * Move isValidElementType to shared/
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Per the conversation on #12453, there are a number of third-party libraries (particularly those that generate higher-order components) that are performing suboptimal validation of element types.
This commit exposes a function that can perform the desired check without depending upon React internals.
In #12453, we discussed exposing this check within the new
react-ispackage, but as I dug in, I lost confidence that that was indeed the right course of action.Today, element type validation occurs within
ReactElementValidator.ReactElementValidatorhas a dependency uponReactElement, but lacks a dependency uponreact-is. (In fact, the nothing within the corereactpackage takes a dependency uponreact-is.)It felt wrong to duplicate the existing type validation code in a separate package, and it also felt wrong to factor it into
react-isand introduce a new dependency fromreacttoreact-is. As such, I placed the type validation logic alongsideReact.isValidElementwithinReactElement.I realize that expanding the surface area of React's top-level API is a dicey prospect, but I wanted to explain my reasoning and propose it in code. If you think an alternative implementation would be more ideal, please just let me know and I'll revise.