fix: [babel][prod] separate default and root 'hot' detection, fixes #1283

Author: theKashey

Diff for: src/babel.prod.js

@@ -2,18 +2,26 @@ const RHLPackage = 'react-hot-loader';
 const RHLRootPackage = 'react-hot-loader/root';
 const RHLPackages = [RHLPackage, RHLRootPackage];
 
-function isImportedFromRHL(path, name) {
+function isImportedFromPackages(path, name, packages) {
   const binding = path.scope.getBinding(name);
   const bindingType = binding && binding.path.node.type;
 
   if (bindingType === 'ImportSpecifier' || bindingType === 'ImportNamespaceSpecifier') {
     const bindingParent = binding.path.parent;
-    return RHLPackages.includes(bindingParent.source.value);
+    return packages.includes(bindingParent.source.value);
   }
 
   return false;
 }
 
+function isImportedFromRHL(path, name) {
+  return isImportedFromPackages(path, name, [RHLPackage]);
+}
+
+function isImportedFromRHLRoot(path, name) {
+  return isImportedFromPackages(path, name, [RHLRootPackage]);
+}
+
 function getRHLContext(file) {
   const context = [];
   const { body } = file.ast.program;
@@ -77,7 +85,7 @@ export default function plugin() {
         if (
           path.node.callee.name === specifier.local &&
           // ensure that this is `hot` from RHL
-          isImportedFromRHL(path, specifier.local) &&
+          isImportedFromRHLRoot(path, specifier.local) &&
           path.type === 'CallExpression' &&
           path.node.arguments[0] &&
           path.node.arguments[0].type === 'Identifier'

Diff for: test/__babel_fixtures__/drop-hot.prod.js

@@ -23,4 +23,7 @@ namedFoo(module)(App);
 RHL.foo(module)(App);
 NOTRHL.hot(module)(App);
 
+// should not drop incomplete reference
+namedFoo(module);
+
 export { a, b, c, d, e, z };

Diff for: test/__snapshots__/babel.test.js.snap

@@ -1118,6 +1118,9 @@ var e = App;
 RHL.foo(module)(App);
 NOTRHL.hot(module)(App);
 
+// should not drop incomplete reference
+(0, _reactHotLoader.foo)(module);
+
 exports.a = a;
 exports.b = b;
 exports.c = c;
@@ -2196,6 +2199,9 @@ const e = App;
 RHL.foo(module)(App);
 NOTRHL.hot(module)(App);
 
+// should not drop incomplete reference
+(0, _reactHotLoader.foo)(module);
+
 exports.a = a;
 exports.b = b;
 exports.c = c;