Fix default class super inheritance (#7732)

Fixes #7683.

packages/babel-plugin-transform-classes/test/fixtures/loose/default-super/exec.js

@@ -0,0 +1,17 @@
+class Test {
+  constructor() {
+    return super.constructor;
+  }
+
+  static test() {
+    return super.constructor;
+  }
+}
+
+// Instances
+expect(Object.getPrototypeOf(Test.prototype)).toBe(Object.prototype);
+expect(new Test()).toBe(Object);
+
+// Static
+expect(Object.getPrototypeOf(Test)).toBe(Function.prototype);
+expect(Test.test()).toBe(Function);

packages/babel-plugin-transform-classes/test/fixtures/loose/default-super/input.js

@@ -0,0 +1,17 @@
+class Test {
+  constructor() {
+    return super.constructor;
+  }
+
+  static test() {
+    return super.constructor;
+  }
+}
+
+// Instances
+expect(Object.getPrototypeOf(Test.prototype)).toBe(Object.prototype);
+expect(new Test()).toBe(Object);
+
+// Static
+expect(Object.getPrototypeOf(Test)).toBe(Function.prototype);
+expect(Test.test()).toBe(Function);

packages/babel-plugin-transform-classes/test/fixtures/loose/default-super/output.js

@@ -0,0 +1,22 @@
+var Test =
+/*#__PURE__*/
+function () {
+  "use strict";
+
+  function Test() {
+    return Object.prototype.constructor;
+  }
+
+  Test.test = function test() {
+    return Function.prototype.constructor;
+  };
+
+  return Test;
+}(); // Instances
+
+
+expect(Object.getPrototypeOf(Test.prototype)).toBe(Object.prototype);
+expect(new Test()).toBe(Object); // Static
+
+expect(Object.getPrototypeOf(Test)).toBe(Function.prototype);
+expect(Test.test()).toBe(Function);

packages/babel-plugin-transform-classes/test/fixtures/loose/super-function-fallback/output.js

@@ -1,5 +1,5 @@
 var Test = function Test() {
   "use strict";
 
-  Function.prototype.hasOwnProperty.call(this, "test");
+  Object.prototype.hasOwnProperty.call(this, "test");
 };

packages/babel-plugin-transform-classes/test/fixtures/spec/default-super/exec.js

@@ -0,0 +1,17 @@
+class Test {
+  constructor() {
+    return super.constructor;
+  }
+
+  static test() {
+    return super.constructor;
+  }
+}
+
+// Instances
+expect(Object.getPrototypeOf(Test.prototype)).toBe(Object.prototype);
+expect(new Test()).toBe(Object);
+
+// Static
+expect(Object.getPrototypeOf(Test)).toBe(Function.prototype);
+expect(Test.test()).toBe(Function);

packages/babel-plugin-transform-classes/test/fixtures/spec/default-super/input.js

@@ -0,0 +1,17 @@
+class Test {
+  constructor() {
+    return super.constructor;
+  }
+
+  static test() {
+    return super.constructor;
+  }
+}
+
+// Instances
+expect(Object.getPrototypeOf(Test.prototype)).toBe(Object.prototype);
+expect(new Test()).toBe(Object);
+
+// Static
+expect(Object.getPrototypeOf(Test)).toBe(Function.prototype);
+expect(Test.test()).toBe(Function);

packages/babel-plugin-transform-classes/test/fixtures/spec/default-super/output.js

@@ -0,0 +1,25 @@
+var Test =
+/*#__PURE__*/
+function () {
+  "use strict";
+
+  function Test() {
+    babelHelpers.classCallCheck(this, Test);
+    return babelHelpers.get(babelHelpers.getPrototypeOf(Test.prototype), "constructor", babelHelpers.assertThisInitialized(this));
+  }
+
+  babelHelpers.createClass(Test, null, [{
+    key: "test",
+    value: function test() {
+      return babelHelpers.get(babelHelpers.getPrototypeOf(Test), "constructor", this);
+    }
+  }]);
+  return Test;
+}(); // Instances
+
+
+expect(Object.getPrototypeOf(Test.prototype)).toBe(Object.prototype);
+expect(new Test()).toBe(Object); // Static
+
+expect(Object.getPrototypeOf(Test)).toBe(Function.prototype);
+expect(Test.test()).toBe(Function);