fix(spread): do not require Symbol

fixes #9277
babel · Mar 30, 2019 · cc952fe · cc952fe
1 parent 1f5444e
commit cc952fe
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Showing 5 changed files with 8 additions and 5 deletions.
diff --git a/packages/babel-helpers/src/helpers.js b/packages/babel-helpers/src/helpers.js
@@ -861,7 +861,7 @@ helpers.arrayWithHoles = helper("7.0.0-beta.0")`
 helpers.iterableToArray = helper("7.0.0-beta.0")`
   export default function _iterableToArray(iter) {
     if (
-      Symbol.iterator in Object(iter) ||
+      (typeof Symbol === 'function' && Symbol.iterator in Object(iter)) ||
       Object.prototype.toString.call(iter) === "[object Arguments]"
     ) return Array.from(iter);
   }

diff --git a/packages/babel-runtime-corejs2/helpers/esm/iterableToArray.js b/packages/babel-runtime-corejs2/helpers/esm/iterableToArray.js
@@ -1,5 +1,6 @@
 import _Array$from from "../../core-js/array/from";
 import _isIterable from "../../core-js/is-iterable";
+import _Symbol from "../../core-js/symbol";
 export default function _iterableToArray(iter) {
-  if (_isIterable(Object(iter)) || Object.prototype.toString.call(iter) === "[object Arguments]") return _Array$from(iter);
+  if (typeof _Symbol === 'function' && _isIterable(Object(iter)) || Object.prototype.toString.call(iter) === "[object Arguments]") return _Array$from(iter);
 }
diff --git a/packages/babel-runtime-corejs2/helpers/iterableToArray.js b/packages/babel-runtime-corejs2/helpers/iterableToArray.js
@@ -2,8 +2,10 @@ var _Array$from = require("../core-js/array/from");
 
 var _isIterable = require("../core-js/is-iterable");
 
+var _Symbol = require("../core-js/symbol");
+
 function _iterableToArray(iter) {
-  if (_isIterable(Object(iter)) || Object.prototype.toString.call(iter) === "[object Arguments]") return _Array$from(iter);
+  if (typeof _Symbol === 'function' && _isIterable(Object(iter)) || Object.prototype.toString.call(iter) === "[object Arguments]") return _Array$from(iter);
 }
 
 module.exports = _iterableToArray;
diff --git a/packages/babel-runtime/helpers/esm/iterableToArray.js b/packages/babel-runtime/helpers/esm/iterableToArray.js
@@ -1,3 +1,3 @@
 export default function _iterableToArray(iter) {
-  if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
+  if (typeof Symbol === 'function' && Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
 }
diff --git a/packages/babel-runtime/helpers/iterableToArray.js b/packages/babel-runtime/helpers/iterableToArray.js
@@ -1,5 +1,5 @@
 function _iterableToArray(iter) {
-  if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
+  if (typeof Symbol === 'function' && Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
 }
 
 module.exports = _iterableToArray;