diff --git a/packages/core-js/stage/0.js b/packages/core-js/stage/0.js
index 7f9b1bbf7548..c9ea9bd6b96f 100644
--- a/packages/core-js/stage/0.js
+++ b/packages/core-js/stage/0.js
@@ -1,3 +1,5 @@
+var parent = require('./1');
+
 require('../proposals/efficient-64-bit-arithmetic');
 require('../proposals/function-is-callable-is-constructor');
 require('../proposals/function-un-this');
@@ -5,6 +7,5 @@ require('../proposals/string-at');
 require('../proposals/url');
 // TODO: Obsolete versions, remove from `core-js@4`:
 require('../proposals/array-filtering');
-var parent = require('./1');
 
 module.exports = parent;
diff --git a/packages/core-js/stage/1.js b/packages/core-js/stage/1.js
index 8125fe06b209..e382cb4df167 100644
--- a/packages/core-js/stage/1.js
+++ b/packages/core-js/stage/1.js
@@ -1,3 +1,5 @@
+var parent = require('./2');
+
 require('../proposals/array-filtering-stage-1');
 require('../proposals/array-last');
 require('../proposals/array-unique');
@@ -19,6 +21,5 @@ require('../proposals/string-cooked');
 require('../proposals/array-from-async');
 require('../proposals/map-upsert');
 require('../proposals/string-replace-all');
-var parent = require('./2');
 
 module.exports = parent;
diff --git a/packages/core-js/stage/2.js b/packages/core-js/stage/2.js
index c5c64cc8a4f2..b96cfe7cf116 100644
--- a/packages/core-js/stage/2.js
+++ b/packages/core-js/stage/2.js
@@ -1,3 +1,5 @@
+var parent = require('./3');
+
 require('../proposals/array-is-template-object');
 require('../proposals/decorator-metadata');
 require('../proposals/iterator-helpers');
@@ -8,6 +10,5 @@ require('../proposals/well-formed-unicode-strings');
 // TODO: Obsolete versions, remove from `core-js@4`
 require('../proposals/array-grouping');
 require('../proposals/decorators');
-var parent = require('./3');
 
 module.exports = parent;
diff --git a/packages/core-js/stage/3.js b/packages/core-js/stage/3.js
index e2becb28651a..9097f2dbfd7c 100644
--- a/packages/core-js/stage/3.js
+++ b/packages/core-js/stage/3.js
@@ -1,8 +1,9 @@
+var parent = require('./4');
+
 require('../proposals/array-from-async-stage-2');
 require('../proposals/array-grouping-stage-3-2');
 require('../proposals/change-array-by-copy');
 // TODO: Obsolete versions, remove from `core-js@4`
 require('../proposals/array-grouping-stage-3');
-var parent = require('./4');
 
 module.exports = parent;
diff --git a/packages/core-js/stage/4.js b/packages/core-js/stage/4.js
index fec53bdea778..84ad6da7c94c 100644
--- a/packages/core-js/stage/4.js
+++ b/packages/core-js/stage/4.js
@@ -8,6 +8,7 @@ require('../proposals/promise-any');
 require('../proposals/relative-indexing-method');
 require('../proposals/string-match-all');
 require('../proposals/string-replace-all-stage-4');
+
 var path = require('../internals/path');
 
 module.exports = path;
diff --git a/packages/core-js/stage/pre.js b/packages/core-js/stage/pre.js
index e37249e5b51c..e3a948843798 100644
--- a/packages/core-js/stage/pre.js
+++ b/packages/core-js/stage/pre.js
@@ -1,4 +1,5 @@
-require('../proposals/reflect-metadata');
 var parent = require('./0');
 
+require('../proposals/reflect-metadata');
+
 module.exports = parent;