Initial commit 🎉

fbshipit-source-id: b6fc29740c6875d2e78953b8a7123890a67930f2
Co-authored-by: Sebastian McKenzie <sebmck@fb.com>
Co-authored-by: John Knox <jknox@fb.com>
Co-authored-by: Emil Sjölander <emilsj@fb.com>
Co-authored-by: Pritesh Nandgaonkar <prit91@fb.com>

static/transforms/fb-stubs.js

@@ -0,0 +1,45 @@
+/**
+ * Copyright 2018-present Facebook.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ * @format
+ */
+
+const fs = require('fs');
+const path = require('path');
+const replaceFBStubs = fs.existsSync(
+  path.join(__dirname, '..', '..', 'src', 'fb'),
+);
+
+const requireFromFolder = (folder, path) =>
+  new RegExp(folder + '/[A-Za-z0-9.-_]+(.js)?$', 'g').test(path);
+
+module.exports = function(babel) {
+  return {
+    name: 'replace-dynamic-requires',
+    visitor: {
+      CallExpression(path) {
+        if (
+          replaceFBStubs &&
+          path.node.type === 'CallExpression' &&
+          path.node.callee.type === 'Identifier' &&
+          path.node.callee.name === 'require' &&
+          path.node.arguments.length > 0
+        ) {
+          if (requireFromFolder('fb', path.node.arguments[0].value)) {
+            throw new Error(
+              'Do not requrie directly from fb/, but rather from fb-stubs/ to not break flow-typing and make sure stubs are uptodate.',
+            );
+          } else if (
+            requireFromFolder('fb-stubs', path.node.arguments[0].value)
+          ) {
+            path.node.arguments[0].value = path.node.arguments[0].value.replace(
+              '/fb-stubs/',
+              '/fb/',
+            );
+          }
+        }
+      },
+    },
+  };
+};