fix: Bump regenerator and add tests

packages/babel-helpers/package.json

@@ -23,7 +23,7 @@
     "@babel/generator": "workspace:^",
     "@babel/helper-plugin-test-runner": "workspace:^",
     "@babel/parser": "workspace:^",
-    "regenerator-runtime": "^0.13.10",
+    "regenerator-runtime": "^0.13.11",
     "terser": "^5.9.0"
   },
   "engines": {

packages/babel-helpers/src/helpers/regeneratorRuntime.js

@@ -336,28 +336,31 @@ export default function _regeneratorRuntime() {
   // delegate iterator, or by modifying context.method and context.arg,
   // setting context.delegate to null, and returning the ContinueSentinel.
   function maybeInvokeDelegate(delegate, context) {
-    var method = delegate.iterator[context.method];
+    var methodName = context.method;
+    var method = delegate.iterator[methodName];
     if (method === undefined) {
       // A .throw or .return when the delegate iterator has no .throw
-      // method always terminates the yield* loop.
+      // method, or a missing .next mehtod, always terminate the
+      // yield* loop.
       context.delegate = null;
-      if (context.method === "throw") {
-        // Note: ["return"] must be used for ES3 parsing compatibility.
-        if (delegate.iterator["return"]) {
-          // If the delegate iterator has a return method, give it a
-          // chance to clean up.
-          context.method = "return";
-          context.arg = undefined;
-          maybeInvokeDelegate(delegate, context);
-          if (context.method === "throw") {
-            // If maybeInvokeDelegate(context) changed context.method from
-            // "return" to "throw", let that override the TypeError below.
-            return ContinueSentinel;
-          }
+
+      // Note: ["return"] must be used for ES3 parsing compatibility.
+      if (methodName === "throw" && delegate.iterator["return"]) {
+        // If the delegate iterator has a return method, give it a
+        // chance to clean up.
+        context.method = "return";
+        context.arg = undefined;
+        maybeInvokeDelegate(delegate, context);
+        if (context.method === "throw") {
+          // If maybeInvokeDelegate(context) changed context.method from
+          // "return" to "throw", let that override the TypeError below.
+          return ContinueSentinel;
         }
+      }
+      if (methodName !== "return") {
         context.method = "throw";
         context.arg = new TypeError(
-          "The iterator does not provide a 'throw' method",
+          "The iterator does not provide a '" + methodName + "' method",
         );
       }
       return ContinueSentinel;

packages/babel-node/package.json

@@ -27,7 +27,7 @@
     "commander": "^4.0.1",
     "core-js": "^3.26.0",
     "node-environment-flags": "^1.0.5",
-    "regenerator-runtime": "^0.13.10",
+    "regenerator-runtime": "^0.13.11",
     "v8flags": "^3.1.1"
   },
   "peerDependencies": {

packages/babel-plugin-transform-regenerator/package.json

@@ -12,7 +12,7 @@
   "main": "./lib/index.js",
   "dependencies": {
     "@babel/helper-plugin-utils": "workspace:^",
-    "regenerator-transform": "^0.15.0"
+    "regenerator-transform": "^0.15.1"
   },
   "license": "MIT",
   "publishConfig": {

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15142/exec.js

@@ -0,0 +1,4 @@
+var f = async () => [await 0, , ];
+f().then(result => {
+  expect(result).toStrictEqual([0, , ]);
+});

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15142/input.js

@@ -0,0 +1 @@
+async () => [await 0, , ];

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15142/options.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["transform-regenerator"]
+}

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15142/output.js

@@ -0,0 +1,17 @@
+/*#__PURE__*/babelHelpers.asyncToGenerator( /*#__PURE__*/babelHelpers.regeneratorRuntime().mark(function _callee() {
+  return babelHelpers.regeneratorRuntime().wrap(function _callee$(_context) {
+    while (1) {
+      switch (_context.prev = _context.next) {
+        case 0:
+          _context.next = 2;
+          return 0;
+        case 2:
+          _context.t0 = _context.sent;
+          return _context.abrupt("return", [_context.t0,,]);
+        case 4:
+        case "end":
+          return _context.stop();
+      }
+    }
+  }, _callee);
+}));

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15177/exec.js

@@ -0,0 +1,9 @@
+expect(() => {
+  var [x] = {
+    [Symbol.iterator]: function* () {
+      yield* {
+        [Symbol.iterator]: x => [],
+      };
+    },
+  };
+}).toThrow(TypeError);

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15177/input.js

@@ -0,0 +1,7 @@
+var [x] = {
+  [Symbol.iterator]: function* () {
+    yield* {
+      [Symbol.iterator]: x => [],
+    };
+  },
+};

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15177/options.json

@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    "transform-destructuring",
+    "transform-regenerator"
+  ]
+}

packages/babel-plugin-transform-regenerator/test/fixtures/regression/15177/output.js

@@ -0,0 +1,17 @@
+var _Symbol$iterator = babelHelpers.defineProperty({}, Symbol.iterator, /*#__PURE__*/babelHelpers.regeneratorRuntime().mark(function _callee() {
+    return babelHelpers.regeneratorRuntime().wrap(function _callee$(_context) {
+      while (1) {
+        switch (_context.prev = _context.next) {
+          case 0:
+            return _context.delegateYield(babelHelpers.defineProperty({}, Symbol.iterator, function (x) {
+              return [];
+            }), "t0", 1);
+          case 1:
+          case "end":
+            return _context.stop();
+        }
+      }
+    }, _callee);
+  })),
+  _Symbol$iterator2 = babelHelpers.slicedToArray(_Symbol$iterator, 1),
+  x = _Symbol$iterator2[0];

packages/babel-runtime-corejs2/package.json

@@ -15,7 +15,7 @@
   "author": "The Babel Team (https://babel.dev/team)",
   "dependencies": {
     "core-js": "^2.6.12",
-    "regenerator-runtime": "^0.13.10"
+    "regenerator-runtime": "^0.13.11"
   },
   "exports": {
     "./helpers/AsyncGenerator": [

packages/babel-runtime-corejs3/package.json

@@ -14,7 +14,7 @@
   "author": "The Babel Team (https://babel.dev/team)",
   "dependencies": {
     "core-js-pure": "^3.25.1",
-    "regenerator-runtime": "^0.13.10"
+    "regenerator-runtime": "^0.13.11"
   },
   "exports": {
     "./helpers/AsyncGenerator": [

packages/babel-runtime/package.json

@@ -14,7 +14,7 @@
   "homepage": "https://babel.dev/docs/en/next/babel-runtime",
   "author": "The Babel Team (https://babel.dev/team)",
   "dependencies": {
-    "regenerator-runtime": "^0.13.10"
+    "regenerator-runtime": "^0.13.11"
   },
   "exports": {
     "./helpers/AsyncGenerator": [

yarn.lock

@@ -1042,7 +1042,7 @@ __metadata:
     "@babel/template": "workspace:^"
     "@babel/traverse": "workspace:^"
     "@babel/types": "workspace:^"
-    regenerator-runtime: ^0.13.10
+    regenerator-runtime: ^0.13.11
     terser: ^5.9.0
   languageName: unknown
   linkType: soft
@@ -1084,7 +1084,7 @@ __metadata:
     fs-readdir-recursive: ^1.0.0
     make-dir: "condition:BABEL_8_BREAKING ? : ^2.1.0"
     node-environment-flags: ^1.0.5
-    regenerator-runtime: ^0.13.10
+    regenerator-runtime: ^0.13.11
     rimraf: ^3.0.0
     v8flags: ^3.1.1
   peerDependencies:
@@ -3054,7 +3054,7 @@ __metadata:
     "@babel/core": "workspace:^"
     "@babel/helper-plugin-test-runner": "workspace:^"
     "@babel/helper-plugin-utils": "workspace:^"
-    regenerator-transform: ^0.15.0
+    regenerator-transform: ^0.15.1
   peerDependencies:
     "@babel/core": ^7.0.0-0
   languageName: unknown
@@ -3601,7 +3601,7 @@ __metadata:
   resolution: "@babel/runtime-corejs2@workspace:packages/babel-runtime-corejs2"
   dependencies:
     core-js: ^2.6.12
-    regenerator-runtime: ^0.13.10
+    regenerator-runtime: ^0.13.11
   languageName: unknown
   linkType: soft
 
@@ -3610,7 +3610,7 @@ __metadata:
   resolution: "@babel/runtime-corejs3@workspace:packages/babel-runtime-corejs3"
   dependencies:
     core-js-pure: ^3.25.1
-    regenerator-runtime: ^0.13.10
+    regenerator-runtime: ^0.13.11
   languageName: unknown
   linkType: soft
 
@@ -3627,7 +3627,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@babel/runtime@workspace:packages/babel-runtime"
   dependencies:
-    regenerator-runtime: ^0.13.10
+    regenerator-runtime: ^0.13.11
   languageName: unknown
   linkType: soft
 
@@ -12930,19 +12930,19 @@ fsevents@^1.2.7:
   languageName: node
   linkType: hard
 
-"regenerator-runtime@npm:^0.13.10":
-  version: 0.13.10
-  resolution: "regenerator-runtime@npm:0.13.10"
-  checksum: 09893f5a9e82932642d9a999716b6c626dc53ef2a01307c952ebbf8e011802360163a37c304c18a6c358548be5a72b448e37209954a18696f21e438c81cbb4b9
+"regenerator-runtime@npm:^0.13.10, regenerator-runtime@npm:^0.13.11":
+  version: 0.13.11
+  resolution: "regenerator-runtime@npm:0.13.11"
+  checksum: 27481628d22a1c4e3ff551096a683b424242a216fee44685467307f14d58020af1e19660bf2e26064de946bad7eff28950eae9f8209d55723e2d9351e632bbb4
   languageName: node
   linkType: hard
 
-"regenerator-transform@npm:^0.15.0":
-  version: 0.15.0
-  resolution: "regenerator-transform@npm:0.15.0"
+"regenerator-transform@npm:^0.15.0, regenerator-transform@npm:^0.15.1":
+  version: 0.15.1
+  resolution: "regenerator-transform@npm:0.15.1"
   dependencies:
     "@babel/runtime": ^7.8.4
-  checksum: 86e54849ab1167618d28bb56d214c52a983daf29b0d115c976d79840511420049b6b42c9ebdf187defa8e7129bdd74b6dd266420d0d3868c9fa7f793b5d15d49
+  checksum: 2d15bdeadbbfb1d12c93f5775493d85874dbe1d405bec323da5c61ec6e701bc9eea36167483e1a5e752de9b2df59ab9a2dfff6bf3784f2b28af2279a673d29a4
   languageName: node
   linkType: hard