feat(es/parser): Enable ergonomic brand checks for TypeScript (#2562)

Author: dsherret

Cargo.lock

@@ -7,7 +7,7 @@ include = ["Cargo.toml", "src/**/*.rs", "examples/**/*.rs"]
 license = "Apache-2.0/MIT"
 name = "swc_ecma_parser"
 repository = "https://github.com/swc-project/swc.git"
-version = "0.76.0"
+version = "0.76.1"
 
 [package.metadata.docs.rs]
 all-features = true

ecmascript/parser/Cargo.toml

@@ -280,7 +280,7 @@ impl Syntax {
             Syntax::Es(EsConfig {
                 private_in_object, ..
             }) => private_in_object,
-            _ => false,
+            Syntax::Typescript(_) => true,
         }
     }
 

ecmascript/parser/src/lib.rs

@@ -5,4 +5,8 @@ class MyClass {
     constructor() {
         this.#b = "test";
     }
+
+    method() {
+        return #a in this;
+    }
 }

ecmascript/parser/tests/typescript/class/property-private/input.ts

@@ -2,7 +2,7 @@
   "type": "Script",
   "span": {
     "start": 0,
-    "end": 98,
+    "end": 147,
     "ctxt": 0
   },
   "body": [
@@ -21,7 +21,7 @@
       "declare": false,
       "span": {
         "start": 0,
-        "end": 98,
+        "end": 147,
         "ctxt": 0
       },
       "decorators": [],
@@ -220,6 +220,96 @@
           },
           "accessibility": null,
           "isOptional": false
+        },
+        {
+          "type": "ClassMethod",
+          "span": {
+            "start": 102,
+            "end": 145,
+            "ctxt": 0
+          },
+          "key": {
+            "type": "Identifier",
+            "span": {
+              "start": 102,
+              "end": 108,
+              "ctxt": 0
+            },
+            "value": "method",
+            "optional": false
+          },
+          "function": {
+            "params": [],
+            "decorators": [],
+            "span": {
+              "start": 102,
+              "end": 145,
+              "ctxt": 0
+            },
+            "body": {
+              "type": "BlockStatement",
+              "span": {
+                "start": 111,
+                "end": 145,
+                "ctxt": 0
+              },
+              "stmts": [
+                {
+                  "type": "ReturnStatement",
+                  "span": {
+                    "start": 121,
+                    "end": 139,
+                    "ctxt": 0
+                  },
+                  "argument": {
+                    "type": "BinaryExpression",
+                    "span": {
+                      "start": 128,
+                      "end": 138,
+                      "ctxt": 0
+                    },
+                    "operator": "in",
+                    "left": {
+                      "type": "PrivateName",
+                      "span": {
+                        "start": 128,
+                        "end": 130,
+                        "ctxt": 0
+                      },
+                      "id": {
+                        "type": "Identifier",
+                        "span": {
+                          "start": 129,
+                          "end": 130,
+                          "ctxt": 0
+                        },
+                        "value": "a",
+                        "optional": false
+                      }
+                    },
+                    "right": {
+                      "type": "ThisExpression",
+                      "span": {
+                        "start": 134,
+                        "end": 138,
+                        "ctxt": 0
+                      }
+                    }
+                  }
+                }
+              ]
+            },
+            "generator": false,
+            "async": false,
+            "typeParameters": null,
+            "returnType": null
+          },
+          "kind": "method",
+          "isStatic": false,
+          "accessibility": null,
+          "isAbstract": false,
+          "isOptional": false,
+          "isOverride": false
         }
       ],
       "superClass": null,