Remove patch-react.js (#1420)

This is a pretty complex code base and it cause
issues for some React components.
And React/fiber is coming with a proper solution.

client/next-dev.js

@@ -1,18 +1,8 @@
-import patch from './patch-react'
 import evalScript from '../lib/eval-script'
 
 const { __NEXT_DATA__: { errorComponent } } = window
 const ErrorComponent = evalScript(errorComponent).default
 
-// apply patch first
-patch((err) => {
-  console.error(err)
-
-  Promise.resolve().then(() => {
-    onError(err)
-  })
-})
-
 require('react-hot-loader/patch')
 
 const next = window.next = require('./')

client/patch-react.js

@@ -1,134 +0,0 @@
-// monkeypatch React for fixing https://github.com/facebook/react/issues/2461
-// based on https://gist.github.com/Aldredcz/4d63b0a9049b00f54439f8780be7f0d8
-
-import React from 'react'
-
-let patched = false
-
-export default (handleError = () => {}) => {
-  if (patched) {
-    throw new Error('React is already monkeypatched')
-  }
-
-  patched = true
-
-  const { createElement } = React
-
-  React.createElement = function (Component, ...rest) {
-    if (typeof Component === 'function') {
-      // We need to get the prototype which has the render method.
-      // It's possible to have render inside a deeper prototype due to
-      // class extending.
-      const prototypeWithRender = getRenderPrototype(Component)
-      const { prototype } = Component
-
-      // assumes it's a class component if render method exists.
-      const isClassComponent = Boolean(prototypeWithRender) ||
-        // subclass of React.Component or PureComponent with no render method.
-        // There's no render method in prototype
-        // when it's created with class-properties.
-        prototype instanceof React.Component ||
-        prototype instanceof React.PureComponent
-
-      let dynamicWrapper = withWrapOwnRender
-
-      if (isClassComponent) {
-        if (prototypeWithRender) {
-          // Sometimes render method is created with only a getter.
-          // In that case we can't override it with a prototype. We need to
-          // do it dynamically.
-          if (canOverrideRender(prototypeWithRender)) {
-            prototypeWithRender.render = wrapRender(prototypeWithRender.render)
-          } else {
-            dynamicWrapper = withWrapRenderAlways
-          }
-        }
-
-        // wrap the render method in runtime when the component initialized
-        // for class-properties.
-        Component = wrap(Component, dynamicWrapper)
-      } else {
-        // stateless component
-        Component = wrapRender(Component)
-      }
-    }
-
-    return createElement.call(this, Component, ...rest)
-  }
-
-  const { Component: { prototype: componentPrototype } } = React
-  const { forceUpdate } = componentPrototype
-
-  componentPrototype.forceUpdate = function (...args) {
-    if (this.render) {
-      this.render = wrapRender(this.render)
-    }
-    return forceUpdate.apply(this, args)
-  }
-
-  function wrapRender (render) {
-    return wrap(render, withHandleError)
-  }
-
-  function withHandleError (fn, ...args) {
-    try {
-      return fn.apply(this, args)
-    } catch (err) {
-      handleError(err)
-      return null
-    }
-  }
-
-  function withWrapOwnRender (fn, ...args) {
-    const result = fn.apply(this, args)
-    if (this.render && this.hasOwnProperty('render')) {
-      this.render = wrapRender(this.render)
-    }
-    return result
-  }
-
-  function withWrapRenderAlways (fn, ...args) {
-    const result = fn.apply(this, args)
-    if (this.render) {
-      Object.defineProperty(this, 'render', { writable: true, value: wrapRender(this.render) })
-    }
-    return result
-  }
-}
-
-function wrap (fn, around) {
-  if (fn.__wrapped) {
-    return fn.__wrapped
-  }
-
-  const _fn = function (...args) {
-    return around.call(this, fn, ...args)
-  }
-
-  for (const [k, d] of Object.entries(Object.getOwnPropertyDescriptors(fn))) {
-    try {
-      Object.defineProperty(_fn, k, d)
-    } catch (e) {}
-  }
-
-  _fn.__wrapped = fn.__wrapped = _fn
-
-  return _fn
-}
-
-function getRenderPrototype (Component) {
-  let proto = Component.prototype
-
-  while (true) {
-    if (proto.hasOwnProperty('render')) return proto
-    proto = Object.getPrototypeOf(proto)
-    if (!proto) return null
-  }
-}
-
-function canOverrideRender (prototype) {
-  const descriptor = Object.getOwnPropertyDescriptor(prototype, 'render')
-  if (!descriptor) return true
-
-  return descriptor.writable
-}