backport the fix #6052 [skip ci]

babel · Aug 15, 2017 · 98824e7 · 98824e7
1 parent c28465e
commit 98824e7
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diff --git a/packages/babel-plugin-transform-es2015-modules-commonjs/src/index.js b/packages/babel-plugin-transform-es2015-modules-commonjs/src/index.js
@@ -109,6 +109,7 @@ export default function () {
       }
       else if (left.isArrayPattern()) {
         for (const element of left.node.elements) {
+          if (!element) continue;
           const name = element.name;
 
           const exports = this.exports[name];

diff --git a/...gin-transform-es2015-modules-commonjs/test/fixtures/interop/export-destructured/actual.js b/...gin-transform-es2015-modules-commonjs/test/fixtures/interop/export-destructured/actual.js
@@ -12,3 +12,7 @@ export function f2 () {
 export function f3 () {
   [x, y, z] = [3, 4, 5]
 }
+
+export function f4 () {
+  [x, , y] = [3, 4, 5]
+}
diff --git a/...n-transform-es2015-modules-commonjs/test/fixtures/interop/export-destructured/expected.js b/...n-transform-es2015-modules-commonjs/test/fixtures/interop/export-destructured/expected.js
@@ -6,6 +6,7 @@ Object.defineProperty(exports, "__esModule", {
 exports.f1 = f1;
 exports.f2 = f2;
 exports.f3 = f3;
+exports.f4 = f4;
 let x = exports.x = 0;
 let y = exports.y = 0;
 
@@ -25,3 +26,9 @@ function f3() {
   exports.y = y;
   exports.x = x;
 }
+
+function f4() {
+  [x,, y] = [3, 4, 5];
+  exports.y = y;
+  exports.x = x;
+}