Add better parser error when using jsx (#11722)

* Add "<" parser tests

*  No {jsx,flow,typescript} plugin

* Type parameter

* Valid JS Code

* Add: better parser error when using jsx

Address #11499

* Add: babel parser test

Test parser with no plugins and when jsx is given with a js expression

* Add: no flow but with typescript test

* Add: type paramter test with no plugins (no flow)

* Add: unclosed jsx element test

packages/babel-parser/src/parser/expression.js

@@ -1177,6 +1177,12 @@ export default class ExpressionParser extends LValParser {
         }
       }
       // fall through
+      case tt.relational: {
+        if (this.state.value === "<") {
+          throw this.expectOnePlugin(["jsx", "flow", "typescript"]);
+        }
+      }
+      // fall through
       default:
         throw this.unexpected();
     }