docs(v7-migration): add core-js v3 path for importing flatMap (#2093)

The `@latest` version of core-js is now v3, which has a different path to specific polyfills than v2.
babel · Sep 3, 2019 · 251f8b9 · 251f8b9
1 parent 77c34e6
commit 251f8b9
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diff --git a/docs/v7-migration.md b/docs/v7-migration.md
@@ -60,7 +60,11 @@ If you want to use proposals, you will need to import these independently. You s
 e.g.
 
 ```js
+// for core-js v2:
 import "core-js/fn/array/flat-map";
+
+// for core-js v3:
+import "core-js/features/array/flat-map";
 ```
 
 Below is a list of Stage < 3 proposal polyfills in `core-js` v2.