pre-installations and preparations

node_modules/@emotion/react/src/jsx-dev-runtime.js

@@ -0,0 +1,35 @@
+// @flow
+import * as ReactJSXRuntimeDev from 'react/jsx-dev-runtime'
+import Emotion, { createEmotionProps } from './emotion-element'
+import { hasOwn } from './utils'
+
+export const Fragment = ReactJSXRuntimeDev.Fragment
+
+export function jsxDEV(
+  type: any,
+  props: any,
+  key: any,
+  isStaticChildren: any,
+  source: any,
+  self: any
+) {
+  if (!hasOwn.call(props, 'css')) {
+    return ReactJSXRuntimeDev.jsxDEV(
+      type,
+      props,
+      key,
+      isStaticChildren,
+      source,
+      self
+    )
+  }
+
+  return ReactJSXRuntimeDev.jsxDEV(
+    Emotion,
+    createEmotionProps(type, props),
+    key,
+    isStaticChildren,
+    source,
+    self
+  )
+}