Better error message for super when not using an object method (#6754)

packages/babylon/src/parser/expression.js

@@ -648,7 +648,10 @@ export default class ExpressionParser extends LValParser {
           !this.state.inClassProperty &&
           !this.options.allowSuperOutsideMethod
         ) {
-          this.raise(this.state.start, "'super' outside of function or class");
+          this.raise(
+            this.state.start,
+            "super is only allowed in object methods and classes",
+          );
         }
 
         node = this.startNode();

packages/babylon/test/fixtures/es2015/class-methods/direct-super-in-object-method/actual.js

@@ -0,0 +1,7 @@
+Object.create({}, {
+  foo: {
+    get: function(){
+      return super.foo;
+    }
+  }
+});

packages/babylon/test/fixtures/es2015/class-methods/direct-super-in-object-method/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "super is only allowed in object methods and classes (4:13)"
+}

packages/babylon/test/fixtures/es2015/uncategorised/344/options.json

@@ -1,3 +1,3 @@
 {
-  "throws": "'super' outside of function or class (1:0)"
+  "throws": "super is only allowed in object methods and classes (1:0)"
-}
+}

packages/babylon/test/fixtures/esprima/es2015-super-property/invalid_super_not_inside_function/options.json

@@ -1,3 +1,3 @@
 {
-  "throws": "'super' outside of function or class (1:8)"
+  "throws": "super is only allowed in object methods and classes (1:8)"
-}
+}