react-custom-portal

This helps you if you want to render part of your component markup in some another place. It's a bit like html portal in react, but for general react markup.

import { createPortal } from 'react-custom-portal'

const ExternalMarkup = createPortal()

const MyComponent = () => {
  <SomeMarkup>
    ...
    <ExternalMarkup.Content>
      This text will not be rendered here,
      but instead it will be rendered within ExternalMarkup.Render
    </ExternalMarkup.Content>
    ...
  </SomeMarkup>
}

const MySettings = () => {
  <AnotherMarkup>
    ...
    {/* The content of <ExternalMarkup.Content ... /> will be rendered here */}
    <ExternalMarkup.Render />
    ...
  </AnotherMarkup>
}

const MyPage = () => {
  <ExternalMarkup.Root>
    ...
    <MyComponent />
    ...
    <MySettings />
    ...
  </ExternalMarkup.Root>
}

By default <Portal.Render /> will render the content of all the <Portal.Content />s been rendered within the <Portal.Root />. If you want to tweak some things you can pass a function as the only child of <Portal.Render /> and it will be passed an array of <Portal.Content />s.

  ...
  <ExternalMarkup.Content shape="circle" ... />
  ...
  <ExternalMarkup.Content shape="rectangle" ... />
  ...
  <ExternalMarkup.Render>
    {children => children.filter(child => child.props.shape === "rectangle")}
  </ExternalMarkup.Render>
  ...

createPortal can be passed an options object with displayName prop to tune the names of created components for debug purpose.

const Objects3DSettings = createPortal({ displayName: "Objects3DSettings" })
// now react tools displays "Objects3DSettings.Content" for <Objects3DSettings.Content ... /> instead of "Portal.Content"