Fixed label extraction from the stack traces in node for components w…

…rapped in `React.forwardRef` (#1973)

* Improve regex for getting labels on Node.js

* Create six-geckos-battle.md

Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>

.changeset/six-geckos-battle.md

@@ -0,0 +1,5 @@
+---
+"@emotion/core": patch
+---
+
+Fixed label extraction from the stack traces in node for components wrapped in `React.forwardRef`. This has affected only development builds.

packages/core/src/jsx.js

@@ -154,7 +154,7 @@ export const jsx: typeof React.createElement = function(
     if (error.stack) {
       // chrome
       let match = error.stack.match(
-        /at (?:Object\.|Module\.|)jsx.*\n\s+at ([A-Z][A-Za-z$]+) /
+        /at (?:Object\.|Module\.|)jsx.*\n\s+at (?:Object\.|)([A-Z][A-Za-z$]+) /
       )
       if (!match) {
         // safari and firefox