Create @babel/helper-get-call-context package

packages/babel-helper-get-call-context/.npmignore

@@ -0,0 +1,3 @@
+src
+test
+*.log

packages/babel-helper-get-call-context/README.md

@@ -0,0 +1,17 @@
+# @babel/helper-get-call-context
+
+> Helper function to get the context of a CallExpression
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/helper-get-call-context
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/helper-get-call-context --dev
+```

packages/babel-helper-get-call-context/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@babel/helper-get-call-context",
+  "version": "7.9.6",
+  "description": "Helper function to get call context",
+  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-get-call-context",
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "lib/index.js",
+  "dependencies": {
+    "@babel/traverse": "^7.9.6"
+  }
+}

packages/babel-helper-get-call-context/src/index.js

@@ -0,0 +1,18 @@
+import type { NodePath } from "@babel/traverse";
+
+export default function(callPath: NodePath): NodePath {
+  callPath.assertCallExpression();
+
+  let calleePath = callPath.get("callee");
+
+  while (
+    calleePath.isTSAsExpression() ||
+    calleePath.isTypeCastExpression() ||
+    calleePath.isTSTypeAssertion() ||
+    calleePath.isParenthesizedExpression()
+  ) {
+    calleePath = calleePath.get("expression");
+  }
+
+  return calleePath;
+}

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

@@ -19,6 +19,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.8.3",
-    "@babel/helper-plugin-test-runner": "^7.8.3"
+    "@babel/helper-plugin-test-runner": "^7.8.3",
+    "@babel/helper-get-call-context": "7.9.6"
   }
 }

packages/babel-plugin-transform-spread/src/index.js

@@ -1,4 +1,5 @@
 import { declare } from "@babel/helper-plugin-utils";
+import getCallContext from "@babel/helper-get-call-context";
 import { types as t } from "@babel/core";
 
 export default declare((api, options) => {
@@ -94,13 +95,7 @@ export default declare((api, options) => {
         const args = node.arguments;
         if (!hasSpread(args)) return;
 
-        let calleePath = path.get("callee");
-
-        if (calleePath.isTSAsExpression()) {
-          do {
-            calleePath = calleePath.get("expression");
-          } while (calleePath.isTSAsExpression());
-        }
+        const calleePath = getCallContext(path);
 
         if (calleePath.isSuper()) return;
 

packages/babel-plugin-transform-spread/test/fixtures/call-context/flow-type-cast/input.ts

@@ -0,0 +1 @@
+(a.b: any)(...args)

packages/babel-plugin-transform-spread/test/fixtures/call-context/flow-type-cast/options.json

@@ -0,0 +1,7 @@
+{
+  "presets": [
+    [
+      "flow"
+    ]
+  ]
+}

packages/babel-plugin-transform-spread/test/fixtures/call-context/flow-type-cast/output.js

@@ -0,0 +1,3 @@
+var _a;
+
+(_a = a).b.apply(_a, babelHelpers.toConsumableArray(args));

packages/babel-plugin-transform-spread/test/fixtures/call-context/options.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["external-helpers", "transform-spread", "transform-parameters"]
+}

packages/babel-plugin-transform-spread/test/fixtures/call-context/parenthesized-expressions/input.js

@@ -0,0 +1 @@
+(a.b)(...args)

packages/babel-plugin-transform-spread/test/fixtures/call-context/parenthesized-expressions/options.json

@@ -0,0 +1,5 @@
+{
+  "parserOpts": {
+    "createParenthesizedExpressions": true
+  }
+}

packages/babel-plugin-transform-spread/test/fixtures/call-context/parenthesized-expressions/output.js

@@ -0,0 +1,3 @@
+var _a;
+
+((_a = a).b.apply)(_a, babelHelpers.toConsumableArray(args));

packages/babel-plugin-transform-spread/test/fixtures/call-context/ts-as-class-field/input.ts

@@ -0,0 +1,7 @@
+class A {
+  #x;
+
+  fn() {
+    (this.#x as any)(...args);
+  }
+}

packages/babel-plugin-transform-spread/test/fixtures/call-context/ts-as-class-field/options.json

@@ -0,0 +1,12 @@
+{
+  "presets": [
+    [
+      "typescript"
+    ]
+  ],
+  "plugins": [
+    [
+      "proposal-class-properties"
+    ]
+  ]
+}

packages/babel-plugin-transform-spread/test/fixtures/call-context/ts-as-class-field/output.js

@@ -0,0 +1,17 @@
+function _classPrivateFieldGet(receiver, privateMap) { var descriptor = privateMap.get(receiver); if (!descriptor) { throw new TypeError("attempted to get private field on non-instance"); } if (descriptor.get) { return descriptor.get.call(receiver); } return descriptor.value; }
+
+class A {
+  constructor() {
+    _x.set(this, {
+      writable: true,
+      value: void 0
+    });
+  }
+
+  fn() {
+    _classPrivateFieldGet(this, _x)(...args);
+  }
+
+}
+
+var _x = new WeakMap();

packages/babel-plugin-transform-spread/test/fixtures/call-context/ts-type-cast/input.ts

@@ -0,0 +1 @@
+(<any> a.b)(...args)

packages/babel-plugin-transform-spread/test/fixtures/call-context/ts-type-cast/options.json

@@ -0,0 +1,7 @@
+{
+  "presets": [
+    [
+      "typescript"
+    ]
+  ]
+}

packages/babel-plugin-transform-spread/test/fixtures/call-context/ts-type-cast/output.js

@@ -0,0 +1,3 @@
+var _a;
+
+(_a = a).b.apply(_a, babelHelpers.toConsumableArray(args));

packages/babel-plugin-transform-spread/test/fixtures/regression/11400/input.ts

@@ -1 +1 @@
-(dog.bark as any)(...args)
+(dog.bark as any)(...args)

packages/babel-plugin-transform-spread/test/fixtures/regression/11400/options.json

@@ -1,7 +1,7 @@
 {
-    "presets": [
-        [
-            "typescript"
-        ]
+  "presets": [
+    [
+      "typescript"
     ]
-}
+  ]
+}