Add support for react 19

[captain-igloo]

react 19 is not supported

[vladboss61]

react 19 is not supported

Yes, I have got problems after migration to React 19 too.

There were errors during the build, and some troubles with ReactSlider component.

 Its type 'typeof ReactSlider' is not a valid JSX element type.
  Type 'typeof ReactSlider' is not assignable to type 'new (props: any) => Component<any, any, any>'. 
    Construct signature return types 'ReactSlider<any>' and 'Component<any, any, any>' are incompatible.
      The types returned by 'render()' are incompatible between these types.
         Type 'ReactElement<any, string | JSXElementConstructor<any>>' is not assignable to type 'ReactNode'.
              Property 'children' is missing in type 'ReactElement<any, string | JSXElementConstructor<any>>' but required in type 'ReactPortal'.

Please fix its :)

[Karmalakas]

I guess it's related:

react-jsx-runtime.development.js?bb19:87 Warning: A props object containing a "key" prop is being spread into JSX
... /node_modules/react-slider/dist/es/dev/components/ReactSlider/ReactSlider.mjs:123:30

I get this on React v18.3, which is to make migration to v19 easier. It shows all the deprecated stuff, but still works

Basically it says, instead of:

const props = {
  key: id,
  className: "my-class",
}

return <Component {...props} />

Needs to be:

const props = {
  className: "my-class",
}

return <Component key={id} {...props} />

[GenGraphic]

I need also support for react 19

[m10]

I am not sure this project is maintained anymore. Nothing happened for 2 years.