Don't loose "this" in helper-call-delegate (#9601)

packages/babel-helper-call-delegate/src/index.js

@@ -41,7 +41,7 @@ export default function(path: NodePath, scope = path.scope) {
 
   path.traverse(visitor, state);
 
-  if (state.foundArguments) {
+  if (state.foundArguments || state.foundThis) {
     callee = t.memberExpression(container, t.identifier("apply"));
     args = [];
 

packages/babel-plugin-transform-parameters/test/fixtures/parameters/iife-this-9385/input.mjs

@@ -0,0 +1,6 @@
+export class Test {
+  invite(options: { privacy: string } = {}) {
+    const privacy = options.privacy || "Private"
+    console.log(this)
+  }
+}

packages/babel-plugin-transform-parameters/test/fixtures/parameters/iife-this-9385/options.json

@@ -0,0 +1,4 @@
+{
+  "plugins": ["transform-typescript"],
+  "presets": ["env"]
+}

packages/babel-plugin-transform-parameters/test/fixtures/parameters/iife-this-9385/output.js

@@ -0,0 +1,35 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Test = void 0;
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+var Test =
+/*#__PURE__*/
+function () {
+  function Test() {
+    _classCallCheck(this, Test);
+  }
+
+  _createClass(Test, [{
+    key: "invite",
+    value: function invite() {
+      var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      return function () {
+        var privacy = options.privacy || "Private";
+        console.log(this);
+      }.apply(this);
+    }
+  }]);
+
+  return Test;
+}();
+
+exports.Test = Test;

packages/babel-plugin-transform-parameters/test/fixtures/parameters/iife-this/input.js

@@ -0,0 +1,8 @@
+var a;
+
+class Test {
+  invite(p = a) {
+    let a;
+    this;
+  }
+}

packages/babel-plugin-transform-parameters/test/fixtures/parameters/iife-this/output.js

@@ -0,0 +1,23 @@
+var a;
+
+var Test =
+/*#__PURE__*/
+function () {
+  "use strict";
+
+  function Test() {
+    babelHelpers.classCallCheck(this, Test);
+  }
+
+  babelHelpers.createClass(Test, [{
+    key: "invite",
+    value: function invite() {
+      var p = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : a;
+      return function () {
+        var a;
+        this;
+      }.apply(this);
+    }
+  }]);
+  return Test;
+}();