diff --git a/packages/metro/src/ModuleGraph/worker/transform-module.js b/packages/metro/src/ModuleGraph/worker/transform-module.js
index c08143ee..78ea3364 100644
--- a/packages/metro/src/ModuleGraph/worker/transform-module.js
+++ b/packages/metro/src/ModuleGraph/worker/transform-module.js
@@ -99,17 +99,15 @@ function transformModule(
 
   let hasteID = null;
   if (filename.indexOf(NODE_MODULES) === -1 && !polyfill) {
-    hasteID = docblock.parse(docblock.extract(sourceCode)).providesModule;
     if (options.hasteImplModulePath != null) {
       // eslint-disable-next-line no-useless-call
       const HasteImpl = (require.call(
         null,
         options.hasteImplModulePath,
       ): HasteImpl);
-      if (HasteImpl.enforceHasteNameMatches) {
-        HasteImpl.enforceHasteNameMatches(filename, hasteID);
-      }
-      hasteID = HasteImpl.getHasteName(filename);
+      hasteID = HasteImpl.getHasteName(filename, sourceCode);
+    } else {
+      hasteID = docblock.parse(docblock.extract(sourceCode)).providesModule;
     }
   }
 
diff --git a/packages/metro/src/node-haste/DependencyGraph.js b/packages/metro/src/node-haste/DependencyGraph.js
index bac24616..077a3319 100644
--- a/packages/metro/src/node-haste/DependencyGraph.js
+++ b/packages/metro/src/node-haste/DependencyGraph.js
@@ -66,7 +66,7 @@ type Options = {|
   +watch: boolean,
 |};
 
-const JEST_HASTE_MAP_CACHE_BREAKER = 2;
+const JEST_HASTE_MAP_CACHE_BREAKER = 3;
 
 class DependencyGraph extends EventEmitter {
   _assetResolutionCache: AssetResolutionCache;