feat: support react 19

eslint.config.mjs

@@ -7,6 +7,11 @@ export default tseslint.config(
   ...configs,
   {
     files: ['**/*.{js,jsx,mjs,cjs,ts,tsx}'],
+    settings: {
+      react: {
+        version: 'detect',
+      }
+    },
     plugins: {
       react,
     },
@@ -44,7 +49,8 @@ export default tseslint.config(
       ],
       '@typescript-eslint/no-deprecated': 'warn',
       'react/no-deprecated': 'warn',
-      '@typescript-eslint/unbound-method': 'off'
+      '@typescript-eslint/unbound-method': 'off',
+      'no-undefined': 'off'
     }
   }
 )

package.json

@@ -24,8 +24,8 @@
     "url": "https://github.com/retejs/react-plugin/issues"
   },
   "peerDependencies": {
-    "react": "^16.8.6 || ^17 || ^18",
-    "react-dom": "^16.8.6 || ^17 || ^18",
+    "react": "^16.8.6 || ^17 || ^18 || ^19 ",
+    "react-dom": "^16.8.6 || ^17 || ^18 || ^19",
     "rete": "^2.0.1",
     "rete-area-plugin": "^2.0.0",
     "rete-render-utils": "^2.0.0",
@@ -34,19 +34,20 @@
   "devDependencies": {
     "@babel/preset-react": "^7.18.6",
     "@rollup/plugin-commonjs": "^23.0.2",
-    "@types/react": "^18.0.21",
-    "@types/react-dom": "^18.0.6",
-    "@types/styled-components": "^5.1.26",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "@types/styled-components": "^5.1.34",
     "eslint-plugin-react": "^7.35.0",
     "globals": "^15.9.0",
-    "react": "^18.2.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "rete": "^2.0.1",
     "rete-area-plugin": "^2.0.0",
     "rete-cli": "~2.0.1",
     "rete-render-utils": "^2.0.0",
     "rollup-plugin-replace": "^2.2.0",
     "rollup-plugin-sass": "^1.2.2",
-    "styled-components": "^5.3.6"
+    "styled-components": "^6.1.19"
   },
   "dependencies": {
     "@babel/runtime": "^7.21.0",

src/globals.d.ts

@@ -0,0 +1,9 @@
+import type { JSX as Jsx } from 'react/jsx-runtime'
+
+declare global {
+  namespace JSX {
+    type ElementClass = Jsx.ElementClass
+    type Element = Jsx.Element
+    type IntrinsicElements = Jsx.IntrinsicElements
+  }
+}

src/index.tsx

@@ -2,7 +2,7 @@
 import { BaseSchemes, CanAssignSignal, Scope } from 'rete'
 
 import { RenderPreset } from './presets/types'
-import { getRenderer, Renderer } from './renderer'
+import { CreateRoot, getRenderer, HasLegacyRender, Renderer } from './renderer'
 import { Position, RenderSignal } from './types'
 import { Root } from './utils'
 
@@ -28,9 +28,11 @@
 /**
  * Plugin props
  */
-export type Props = {
+export type Props = HasLegacyRender extends true ? {
   /** root factory for React.js 18+ */
-  createRoot?: (container: Element | DocumentFragment) => any
+  createRoot?: CreateRoot
+} : {
+  createRoot: CreateRoot
 }
 
 /**
@@ -40,13 +42,13 @@
  * @listens render
  * @listens unmount
  */
 export class ReactPlugin<Schemes extends BaseSchemes, T = Requires<Schemes>> extends Scope<Produces<Schemes>, [Requires<Schemes> | T]> {
   renderer: Renderer
   presets: RenderPreset<Schemes, T>[] = []
 
-  constructor(props?: Props) {
+  constructor(...[props]: HasLegacyRender extends true ? [props?: Props] : [props: Props]) {
     super('react-render')
     this.renderer = getRenderer({ createRoot: props?.createRoot })
 
     this.addPipe(context => {
       if (!context || typeof context !== 'object' || !('type' in context)) return context
@@ -57,7 +59,7 @@
           return context
         }
         if (this.mount(context.data.element, context)) {
           return {
             ...context,
             data: {
               ...context.data,
@@ -83,12 +85,12 @@
     const parent = this.parentScope()
 
     for (const preset of this.presets) {
       const result = preset.render(context as any, this)
 
       if (!result) continue
 
       const reactElement = (
         <Root rendered={() => void parent.emit({ type: 'rendered', data: context.data } as T)}>
           {result}
         </Root>
       )
@@ -106,8 +108,8 @@
    * Adds a preset to the plugin.
    * @param preset Preset that can render nodes, connections and other elements.
    */
   public addPreset<K>(preset: RenderPreset<Schemes, CanAssignSignal<T, K> extends true ? K : 'Cannot apply preset. Provided signals are not compatible'>) {
     const local = preset as RenderPreset<Schemes, T>
 
     if (local.attach) local.attach(this)
     this.presets.push(local)

src/presets/classic/components/Control.tsx

@@ -31,7 +31,7 @@ export function Control<N extends 'text' | 'number'>(props: { data: ClassicPrese
       type={props.data.type}
       ref={ref}
       readOnly={props.data.readonly}
-      onChange={e => {
+      onChange={(e: React.ChangeEvent<HTMLInputElement>) => {
         const val = (props.data.type === 'number'
           ? +e.target.value
           : e.target.value) as typeof props.data['value']

src/presets/classic/components/Node.tsx

@@ -15,11 +15,11 @@ export const NodeStyles = styled.div<NodeExtraData & { selected: boolean, styles
     cursor: pointer;
     box-sizing: border-box;
     width: ${props => Number.isFinite(props.width)
-    ? `${props.width}px`
-    : `${$nodewidth}px`};
+      ? `${props.width}px`
+      : `${$nodewidth}px`};
     height: ${props => Number.isFinite(props.height)
-    ? `${props.height}px`
-    : 'auto'};
+      ? `${props.height}px`
+      : 'auto'};
     padding-bottom: 6px;
     position: relative;
     user-select: none;

src/presets/context-menu/components/Item.tsx

@@ -41,13 +41,13 @@ export function ItemElement(props: Props) {
   const Subitems = props.components?.subitems?.(props.data) || SubitemStyles
 
   return <Component
-    onClick={e => {
+    onClick={(e: React.MouseEvent) => {
       e.stopPropagation()
       props.data.handler()
       props.hide()
     }}
     hasSubitems={Boolean(props.data.subitems)}
-    onPointerDown={e => {
+    onPointerDown={(e: React.PointerEvent) => {
       e.stopPropagation()
     }}
     onPointerOver={() => {

src/presets/context-menu/components/Menu.tsx

@@ -35,8 +35,10 @@ export function Menu(props: Props) {
     onMouseOver={() => {
       cancelHide()
     }}
-    onMouseLeave={() => hide && hide()}
-    onWheel={e => {
+    onMouseLeave={() => {
+      hide?.()
+    }}
+    onWheel={(e: React.WheelEvent) => {
       e.stopPropagation()
     }}
     data-testid="context-menu"

src/presets/context-menu/components/Search.tsx

@@ -21,10 +21,10 @@ export function Search(props: { value: string, onChange(value: string): void, co
   return (
     <Component
       value={props.value}
-      onInput={e => {
+      onInput={(e: React.FormEvent<HTMLInputElement>) => {
         props.onChange((e.target as HTMLInputElement).value)
       }}
-      onPointerDown={e => {
+      onPointerDown={(e: React.PointerEvent) => {
         e.stopPropagation()
       }}
       data-testid="context-menu-search-input"

src/presets/context-menu/hooks.ts

@@ -1,7 +1,7 @@
 import { useEffect, useRef } from 'react'
 
 export function useDebounce(cb: () => void, timeout: number): [null | (() => void), () => void] {
-  const ref = useRef<ReturnType<typeof setTimeout>>()
+  const ref = useRef<ReturnType<typeof setTimeout>>(undefined)
 
   function cancel() {
     if (ref.current) {

src/presets/minimap/components/Minimap.tsx

@@ -33,7 +33,10 @@ type Props = {
 export function Minimap(props: Props) {
   const ref = useRef<HTMLDivElement>(null)
   const { width = 0 } = useResizeObserver({
-    ref
+    // https://github.com/juliencrn/usehooks-ts/issues/663
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-expect-error
+    ref: ref
   })
   const containerWidth = ref.current?.clientWidth || width
   const scale = useCallback((v: number) => v * containerWidth, [containerWidth])
@@ -44,11 +47,11 @@ export function Minimap(props: Props) {
       width: px(props.size * props.ratio),
       height: px(props.size)
     }}
-    onPointerDown={e => {
+    onPointerDown={(e: React.PointerEvent) => {
       e.stopPropagation()
       e.preventDefault()
     }}
-    onDoubleClick={e => {
+    onDoubleClick={(e: React.MouseEvent) => {
       e.stopPropagation()
       e.preventDefault()
       if (!ref.current) return

src/presets/reroute-pins/Pin.tsx

@@ -33,13 +33,13 @@ export function Pin(props: Props) {
 
   return (
     <Styles
-      onPointerDown={e => {
+      onPointerDown={(e: React.PointerEvent) => {
         e.stopPropagation()
         e.preventDefault()
         drag.start(e)
         props.pointerdown()
       }}
-      onContextMenu={e => {
+      onContextMenu={(e: React.MouseEvent) => {
         e.stopPropagation()
         e.preventDefault()
         props.contextMenu()

src/presets/reroute-pins/index.tsx

@@ -24,9 +24,15 @@ export function setup<Schemes extends BaseSchemes, K extends PinsRender>(props?:
         <Pin
           {...pin}
           key={pin.id}
-          contextMenu={() => props?.contextMenu && props.contextMenu(pin.id)}
-          translate={(dx, dy) => props?.translate && props.translate(pin.id, dx, dy)}
-          pointerdown={() => props?.pointerdown && props.pointerdown(pin.id)}
+          contextMenu={() => {
+            props?.contextMenu?.(pin.id)
+          }}
+          translate={(dx, dy) => {
+            props?.translate?.(pin.id, dx, dy)
+          }}
+          pointerdown={() => {
+            props?.pointerdown?.(pin.id)
+          }}
           pointer={pointer}
         />
       ))}

src/renderer.ts

@@ -1,9 +1,22 @@
-/* eslint-disable react/no-render-return-value */
+import * as React from 'react'
 import * as ReactDOM from 'react-dom'
 
-export type Renderer = { mount: ReactDOM.Renderer, unmount: (container: HTMLElement) => void }
+// React 18+ root type
+interface Root {
+  render(children: React.ReactNode): void
+  unmount(): void
+}
+
+export type HasLegacyRender = (typeof ReactDOM) extends { render(...args: any[]): any } ? true : false
+
+export type CreateRoot = (container: Element | DocumentFragment) => Root
+
+type ReactDOMRenderer = (
+  element: React.ReactElement,
+  container: HTMLElement
+) => React.Component | Element
 
-type CreateRoot = (container: Element | DocumentFragment) => any
+export type Renderer = { mount: ReactDOMRenderer, unmount: (container: HTMLElement) => void }
 
 export function getRenderer(props?: { createRoot?: CreateRoot }): Renderer {
   const createRoot = props?.createRoot
@@ -17,51 +30,72 @@ export function getRenderer(props?: { createRoot?: CreateRoot }): Renderer {
     const span = document.createElement('span')
 
     container.appendChild(span)
-    return wrappers.set(container, span).get(container)!
+    wrappers.set(container, span)
+    return span
   }
-  function removeWrapper(container: HTMLElement) {
+
+  function removeWrapper(container: HTMLElement): void {
     const wrapper = wrappers.get(container)
 
-    if (wrapper) wrapper.remove()
-    wrappers.delete(container)
+    if (wrapper) {
+      wrapper.remove()
+      wrappers.delete(container)
+    }
   }
 
+  // React 18+ path with createRoot
   if (createRoot) {
-    const roots = new WeakMap<HTMLElement>()
+    const roots = new WeakMap<HTMLElement, Root>()
 
     return {
-      mount: ((
-        element: React.DOMElement<React.DOMAttributes<any>, any>,
-        container: HTMLElement
-      ): Element => {
+      mount: (element: React.ReactElement, container: HTMLElement) => {
         const wrapper = getWrapper(container)
 
-        if (!roots.has(wrapper)) {
-          roots.set(wrapper, createRoot(wrapper))
+        let root = roots.get(wrapper)
+
+        if (!root) {
+          root = createRoot(wrapper)
+          roots.set(wrapper, root)
         }
-        const root = roots.get(wrapper)
 
-        return root.render(element)
-      }) as ReactDOM.Renderer,
+        root.render(element)
+        return wrapper.firstElementChild ?? wrapper
+      },
       unmount: (container: HTMLElement) => {
         const wrapper = getWrapper(container)
         const root = roots.get(wrapper)
 
         if (root) {
           root.unmount()
           roots.delete(wrapper)
-          removeWrapper(container)
         }
+        removeWrapper(container)
       }
     }
   }
 
+  // React 16-17 legacy path with ReactDOM.render
   return {
-    mount: ((element: React.DOMElement<React.DOMAttributes<any>, any>, container: HTMLElement): Element => {
-      return ReactDOM.render(element, getWrapper(container))
-    }) as ReactDOM.Renderer,
+    mount: (element: React.ReactElement, container: HTMLElement) => {
+      const wrapper = getWrapper(container)
+
+      if ('render' in ReactDOM && typeof ReactDOM.render === 'function') {
+        const result = ReactDOM.render(element, wrapper) as React.Component | Element
+
+        return result || wrapper
+      }
+
+      throw new Error('ReactDOM.render is not available')
+    },
     unmount: (container: HTMLElement) => {
-      ReactDOM.unmountComponentAtNode(getWrapper(container))
+      const wrapper = getWrapper(container)
+
+      if ('unmountComponentAtNode' in ReactDOM && typeof ReactDOM.unmountComponentAtNode === 'function') {
+        ReactDOM.unmountComponentAtNode(wrapper)
+      } else {
+        throw new Error('ReactDOM.unmountComponentAtNode is not available')
+      }
+
       removeWrapper(container)
     }
   }

src/shared/utils.ts

@@ -21,7 +21,7 @@ export function copyEvent<T extends Event & Record<string, any>>(e: T) {
 const rootPrefix = '__reactContainer$'
 
 type Keys = `${typeof rootPrefix}${string}` | '_reactRootContainer'
-type ReactNode = { [key in Keys]?: unknown } & HTMLElement
+type ReactNode = Partial<Record<Keys, unknown>> & HTMLElement
 
 export function findReactRoot(element: HTMLElement) {
   let current: ReactNode | null = element as ReactNode

src/utils.ts

@@ -32,9 +32,10 @@ export function syncFlush() {
 
 export function useRete<T extends { destroy(): void }>(create: (el: HTMLElement) => Promise<T>) {
   const [container, setContainer] = useState<null | HTMLElement>(null)
-  const editorRef = useRef<T>()
+  const editorRef = useRef<T>(undefined)
   const [editor, setEditor] = useState<T | null>(null)
-  const ref = useRef(null)
+  // compatible RefObject type for React 18 and earlier
+  const ref = useRef<HTMLDivElement>(null) as React.RefObject<HTMLDivElement>
 
   useEffect(() => {
     if (container) {