Invalidate the scope cache if a node is moved to a different path - fixes T7194

packages/babel-plugin-transform-async-to-generator/test/fixtures/regression/T7194/actual.js

@@ -0,0 +1,13 @@
+function f() {
+  g(async function() {
+    c(() => this);
+  });
+}
+
+(async function () {
+  console.log('async wrapper:', this === 'foo')
+
+  ;(() => {
+    console.log('nested arrow:', this === 'foo')
+  })()
+}).call('foo')

packages/babel-plugin-transform-async-to-generator/test/fixtures/regression/T7194/expected.js

@@ -0,0 +1,17 @@
+function f() {
+  g(babelHelpers.asyncToGenerator(function* () {
+    var _this = this;
+
+    c(function () {
+      return _this;
+    });
+  }));
+}
+
+babelHelpers.asyncToGenerator(function* () {
+  var _this2 = this;
+
+  console.log('async wrapper:', this === 'foo');(function () {
+    console.log('nested arrow:', _this2 === 'foo');
+  })();
+}).call('foo');

packages/babel-plugin-transform-async-to-generator/test/fixtures/regression/T7194/options.json

@@ -0,0 +1,7 @@
+{
+  "plugins": [
+    "transform-es2015-arrow-functions",
+    "transform-async-to-generator",
+    "external-helpers"
+  ]
+}

packages/babel-traverse/src/scope/index.js

@@ -23,17 +23,17 @@ let _crawlCallsCount = 0;
  * node itself containing all scopes it has been associated with.
  */
 
-function getCache(node, parentScope, self) {
-  let scopes: Array<Scope> = scopeCache.get(node) || [];
+function getCache(path, parentScope, self) {
+  let scopes: Array<Scope> = scopeCache.get(path.node) || [];
 
   for (let scope of scopes) {
-    if (scope.parent === parentScope) return scope;
+    if (scope.parent === parentScope && scope.path === path) return scope;
   }
 
   scopes.push(self);
 
-  if (!scopeCache.has(node)) {
-    scopeCache.set(node, scopes);
+  if (!scopeCache.has(path.node)) {
+    scopeCache.set(path.node, scopes);
   }
 }
 
@@ -150,7 +150,7 @@ export default class Scope {
       return parentScope;
     }
 
-    let cached = getCache(path.node, parentScope, this);
+    let cached = getCache(path, parentScope, this);
     if (cached) return cached;
 
     this.uid = uid++;