Open haggholm opened 6 years ago
@haggholm any progress on this issue?
Edit: I'm also getting this issue with ReactContext.Provider
Unfortunately I haven’t had time to return to it yet.
I have also been getting this issue when using a HOC that includes React.forwardRef
. This error only appears when the HOC is applied as a class decorator.
+1 same issue.
I've added some updated information and a short-term fix to https://github.com/facebook/metro/issues/272
Similar issue with debugging results.
Please excuse a somewhat vague report as I’m just investigating a rather involved build system.
Our codebase has (a) a custom component base class, which is generally discouraged; and (b) HOCs that use the new
forwardRef()
functionality. This lead to a very strange breakage when I tried to migrate some components that currently use our internalBaseComponent
to instead extendReact.Component
(orPureComponent
) directly: our React Native app crashed in react-proxy’s update() function with the error'Expected a constructor.'
. It appears that when extending the React classes, the component ends up being not a class, but instead an object with the shape (per Chrome debugger)It’s not clear to me why this does not happen with our custom base class: I suppose
forwardRef()
treats it differently, being a full-blown ES6 class as opposed to what React provides. It’s also not clear to me exactly where I should be filing this bug:react-proxy
,react-transform-hmr
,metro
, …? Any thoughts welcomed.