fix(es/compat): Correctly handle this in arrow function parameters (#…

…8489)

**Related issue:**
- Closes #8488

crates/swc/tests/fixture/issues-8xxx/8488/1/input/.swcrc

@@ -0,0 +1,24 @@
+{
+  "jsc": {
+    "parser": {
+      "syntax": "typescript",
+      "tsx": false
+    },
+    "target": "es5",
+    "transform": {
+      "react": {
+        "runtime": "automatic",
+        "useBuiltins": true
+      }
+    },
+    "minify": {
+      "compress": false,
+      "mangle": false
+    },
+    "loose": false
+  },
+  "module": {
+    "type": "es6"
+  },
+  "minify": false
+}

crates/swc/tests/fixture/issues-8xxx/8488/1/input/index.js

@@ -0,0 +1,5 @@
+class Foo {
+    bar(v = this.a?.b?.c) {}
+}
+
+new Foo().bar();

crates/swc/tests/fixture/issues-8xxx/8488/1/output/index.js

@@ -0,0 +1,22 @@
+import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
+import { _ as _create_class } from "@swc/helpers/_/_create_class";
+var Foo = function() {
+    "use strict";
+    function Foo() {
+        _class_call_check(this, Foo);
+    }
+    _create_class(Foo, [
+        {
+            key: "bar",
+            value: function bar() {
+                var _this = this;
+                var v = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : function() {
+                    var _this_a_b, _this_a;
+                    return (_this_a = _this.a) === null || _this_a === void 0 ? void 0 : (_this_a_b = _this_a.b) === null || _this_a_b === void 0 ? void 0 : _this_a_b.c;
+                }();
+            }
+        }
+    ]);
+    return Foo;
+}();
+new Foo().bar();

crates/swc/tests/fixture/issues-8xxx/8488/2/input/.swcrc

@@ -0,0 +1,8 @@
+{
+  "jsc": {
+    "parser": {
+      "syntax": "ecmascript"
+    },
+    "target": "es5"
+  }
+}

crates/swc/tests/fixture/issues-8xxx/8488/2/input/index.js

@@ -0,0 +1,17 @@
+function f1(x = this) {}
+function f2(x = () => this) {}
+function f3(
+    x = () => {
+        return this;
+    },
+) {}
+
+function bar() {
+    function b1(x = this) {}
+    function b2(x = () => this) {}
+    function b3(
+        x = () => {
+            return this;
+        },
+    ) {}
+}

crates/swc/tests/fixture/issues-8xxx/8488/2/output/index.js

@@ -0,0 +1,32 @@
+function f1() {
+    var x = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : this;
+}
+function f2() {
+    var _this = this;
+    var x = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : function() {
+        return _this;
+    };
+}
+function f3() {
+    var _this = this;
+    var x = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : function() {
+        return _this;
+    };
+}
+function bar() {
+    function b1() {
+        var x = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : this;
+    }
+    function b2() {
+        var _this = this;
+        var x = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : function() {
+            return _this;
+        };
+    }
+    function b3() {
+        var _this = this;
+        var x = arguments.length > 0 && arguments[0] !== void 0 ? arguments[0] : function() {
+            return _this;
+        };
+    }
+}

crates/swc/tests/vercel/loader-only/next-39460/output/snippetSession.js

@@ -513,8 +513,8 @@ export var SnippetSession = /*#__PURE__*/ function() {
         {
             key: "merge",
             value: function merge(template) {
-                var options = arguments.length > 1 && arguments[1] !== void 0 ? arguments[1] : _defaultOptions;
                 var _this = this;
+                var options = arguments.length > 1 && arguments[1] !== void 0 ? arguments[1] : _defaultOptions;
                 if (!this._editor.hasModel()) {
                     return;
                 }

crates/swc_ecma_compat_es2015/src/lib.rs

@@ -78,11 +78,11 @@ where
         Optional::new(object_super(), !c.typescript),
         shorthand(),
         function_name(),
-        exprs(unresolved_mark),
         for_of(c.for_of),
         // Should come before parameters
         // See: https://github.com/swc-project/swc/issues/1036
         parameters(c.parameters, unresolved_mark),
+        exprs(unresolved_mark),
         computed_properties(c.computed_props),
         destructuring(c.destructuring),
         block_scoping(unresolved_mark),

crates/swc_ecma_preset_env/src/lib.rs

@@ -247,11 +247,6 @@ where
     );
     let pass = add!(pass, ObjectSuper, es2015::object_super());
     let pass = add!(pass, FunctionName, es2015::function_name());
-    let pass = add!(pass, ArrowFunctions, es2015::arrow(unresolved_mark));
-    let pass = add!(pass, DuplicateKeys, es2015::duplicate_keys());
-    let pass = add!(pass, StickyRegex, es2015::sticky_regex());
-    // TODO:    InstanceOf,
-    let pass = add!(pass, TypeOfSymbol, es2015::typeof_symbol());
     let pass = add!(pass, ShorthandProperties, es2015::shorthand());
     let pass = add!(
         pass,
@@ -263,6 +258,11 @@ where
             unresolved_mark
         )
     );
+    let pass = add!(pass, ArrowFunctions, es2015::arrow(unresolved_mark));
+    let pass = add!(pass, DuplicateKeys, es2015::duplicate_keys());
+    let pass = add!(pass, StickyRegex, es2015::sticky_regex());
+    // TODO:    InstanceOf,
+    let pass = add!(pass, TypeOfSymbol, es2015::typeof_symbol());
     let pass = add!(
         pass,
         ForOf,