Fix duplicate definition error in private class methods (#9453)

packages/babel-plugin-proposal-private-methods/test/fixtures/private-method/scopable/exec.js

@@ -0,0 +1,17 @@
+class Foo {
+  #privateMethodA() {
+    const i = 40;
+    return i;
+  }
+
+  #privateMethodB() {
+    const i = 2;
+    return i;
+  }
+
+  publicMethod() {
+    return this.#privateMethodA() + this.#privateMethodB();
+  }
+}
+
+expect((new Foo).publicMethod()).toEqual(42);

packages/babel-types/src/definitions/experimental.js

@@ -168,7 +168,14 @@ defineType("ClassPrivateMethod", {
     "returnType",
     "typeParameters",
   ],
-  aliases: ["Method", "Private", "Function"],
+  aliases: [
+    "Function",
+    "Scopable",
+    "BlockParent",
+    "FunctionParent",
+    "Method",
+    "Private",
+  ],
   fields: {
     ...classMethodOrDeclareMethodCommon,
     key: {

packages/babel-types/src/validators/generated/index.js

@@ -3283,7 +3283,8 @@ export function isScopable(node: Object, opts?: Object): boolean {
     "ClassDeclaration" === nodeType ||
     "ClassExpression" === nodeType ||
     "ForOfStatement" === nodeType ||
-    "ClassMethod" === nodeType
+    "ClassMethod" === nodeType ||
+    "ClassPrivateMethod" === nodeType
   ) {
     if (typeof opts === "undefined") {
       return true;
@@ -3313,7 +3314,8 @@ export function isBlockParent(node: Object, opts?: Object): boolean {
     "WhileStatement" === nodeType ||
     "ArrowFunctionExpression" === nodeType ||
     "ForOfStatement" === nodeType ||
-    "ClassMethod" === nodeType
+    "ClassMethod" === nodeType ||
+    "ClassPrivateMethod" === nodeType
   ) {
     if (typeof opts === "undefined") {
       return true;
@@ -3591,7 +3593,8 @@ export function isFunctionParent(node: Object, opts?: Object): boolean {
     "FunctionExpression" === nodeType ||
     "ObjectMethod" === nodeType ||
     "ArrowFunctionExpression" === nodeType ||
-    "ClassMethod" === nodeType
+    "ClassMethod" === nodeType ||
+    "ClassPrivateMethod" === nodeType
   ) {
     if (typeof opts === "undefined") {
       return true;