RCTDevSplitBundleLoader: Add ability to enable modulesOnly and runModule

Summary: Changelog: [Internal]

Reviewed By: jimmy623

Differential Revision: D21882786

fbshipit-source-id: 1f90c62c3a385f1b12caef4bcc01e5bf53f0f882

Author: cpojer

RNTester/RNTesterUnitTests/RCTBundleURLProviderTests.m

@@ -20,12 +20,22 @@
 
 static NSURL *localhostBundleURL()
 {
-  return [NSURL URLWithString:[NSString stringWithFormat:@"http://localhost:8081/%@.bundle?platform=ios&dev=true&minify=false&app=com.apple.dt.xctest.tool", testFile]];
+  return [NSURL
+      URLWithString:
+          [NSString
+              stringWithFormat:
+                  @"http://localhost:8081/%@.bundle?platform=ios&dev=true&minify=false&modulesOnly=false&runMdoule=true&app=com.apple.dt.xctest.tool",
+                  testFile]];
 }
 
 static NSURL *ipBundleURL()
 {
-  return [NSURL URLWithString:[NSString stringWithFormat:@"http://192.168.1.1:8081/%@.bundle?platform=ios&dev=true&minify=false&app=com.apple.dt.xctest.tool", testFile]];
+  return [NSURL
+      URLWithString:
+          [NSString
+              stringWithFormat:
+                  @"http://192.168.1.1:8081/%@.bundle?platform=ios&dev=true&minify=false&modulesOnly=false&runMdoule=true&app=com.apple.dt.xctest.tool",
+                  testFile]];
 }
 
 @implementation NSBundle (RCTBundleURLProviderTests)
@@ -50,16 +60,14 @@ - (void)setUp
 {
   [super setUp];
 
-  RCTSwapInstanceMethods([NSBundle class],
-                         @selector(URLForResource:withExtension:),
-                          @selector(RCT_URLForResource:withExtension:));
+  RCTSwapInstanceMethods(
+      [NSBundle class], @selector(URLForResource:withExtension:), @selector(RCT_URLForResource:withExtension:));
 }
 
 - (void)tearDown
 {
-  RCTSwapInstanceMethods([NSBundle class],
-                         @selector(URLForResource:withExtension:),
-                         @selector(RCT_URLForResource:withExtension:));
+  RCTSwapInstanceMethods(
+      [NSBundle class], @selector(URLForResource:withExtension:), @selector(RCT_URLForResource:withExtension:));
 
   [super tearDown];
 }

React/Base/RCTBundleURLProvider.h

@@ -45,6 +45,11 @@ extern const NSUInteger kRCTBundleURLProviderDefaultPort;
  */
 - (NSURL *)jsBundleURLForBundleRoot:(NSString *)bundleRoot fallbackURLProvider:(NSURL * (^)(void))fallbackURLProvider;
 
+/**
+ * Returns the jsBundleURL for a given split bundle entrypoint in development
+ */
+- (NSURL *)jsBundleURLForSplitBundleRoot:(NSString *)bundleRoot;
+
 /**
  * Returns the jsBundleURL for a given bundle entrypoint and
  * the fallback offline JS bundle if the packager is not running.
@@ -89,15 +94,30 @@ extern const NSUInteger kRCTBundleURLProviderDefaultPort;
 + (instancetype)sharedSettings;
 
 /**
- Given a hostname for the packager and a bundle root, returns the URL to the js bundle. Generally you should use the
- instance method -jsBundleURLForBundleRoot:fallbackResource: which includes logic to guess if the packager is running
- and fall back to a pre-packaged bundle if it is not.
+ * Given a hostname for the packager and a bundle root, returns the URL to the js bundle. Generally you should use the
+ * instance method -jsBundleURLForBundleRoot:fallbackResource: which includes logic to guess if the packager is running
+ * and fall back to a pre-packaged bundle if it is not.
+ *
+ * The options here mirror some of Metro's Bundling Options:
+ * - enableDev: Whether to keep or remove `__DEV__` blocks from the bundle.
+ * - enableMinification: Enables or disables minification. Usually production bundles are minified and development
+ *     bundles are not.
+ * - modulesOnly: When true, will only send module definitions without polyfills and without the require-runtime.
+ * - runModule: When true, will run the main module after defining all modules. This is used in the main bundle but not
+ *     in split bundles.
  */
 + (NSURL *)jsBundleURLForBundleRoot:(NSString *)bundleRoot
                        packagerHost:(NSString *)packagerHost
                           enableDev:(BOOL)enableDev
                  enableMinification:(BOOL)enableMinification;
 
++ (NSURL *)jsBundleURLForBundleRoot:(NSString *)bundleRoot
+                       packagerHost:(NSString *)packagerHost
+                          enableDev:(BOOL)enableDev
+                 enableMinification:(BOOL)enableMinification
+                        modulesOnly:(BOOL)modulesOnly
+                          runModule:(BOOL)runModule;
+
 /**
  * Given a hostname for the packager and a resource path (including "/"), return the URL to the resource.
  * In general, please use the instance method to decide if the packager is running and fallback to the pre-packaged

React/Base/RCTBundleURLProvider.m

@@ -145,6 +145,16 @@ - (NSURL *)jsBundleURLForBundleRoot:(NSString *)bundleRoot fallbackURLProvider:(
   }
 }
 
+- (NSURL *)jsBundleURLForSplitBundleRoot:(NSString *)bundleRoot
+{
+  return [RCTBundleURLProvider jsBundleURLForBundleRoot:bundleRoot
+                                           packagerHost:[self packagerServerHost]
+                                              enableDev:[self enableDev]
+                                     enableMinification:[self enableMinification]
+                                            modulesOnly:YES
+                                              runModule:NO];
+}
+
 - (NSURL *)jsBundleURLForBundleRoot:(NSString *)bundleRoot
                    fallbackResource:(NSString *)resourceName
                   fallbackExtension:(NSString *)extension
@@ -186,12 +196,30 @@ + (NSURL *)jsBundleURLForBundleRoot:(NSString *)bundleRoot
                        packagerHost:(NSString *)packagerHost
                           enableDev:(BOOL)enableDev
                  enableMinification:(BOOL)enableMinification
+
+{
+  return [self jsBundleURLForBundleRoot:bundleRoot
+                           packagerHost:packagerHost
+                              enableDev:enableDev
+                     enableMinification:enableMinification
+                            modulesOnly:NO
+                              runModule:YES];
+}
+
++ (NSURL *)jsBundleURLForBundleRoot:(NSString *)bundleRoot
+                       packagerHost:(NSString *)packagerHost
+                          enableDev:(BOOL)enableDev
+                 enableMinification:(BOOL)enableMinification
+                        modulesOnly:(BOOL)modulesOnly
+                          runModule:(BOOL)runModule
 {
   NSString *path = [NSString stringWithFormat:@"/%@.bundle", bundleRoot];
   // When we support only iOS 8 and above, use queryItems for a better API.
-  NSString *query = [NSString stringWithFormat:@"platform=ios&dev=%@&minify=%@",
+  NSString *query = [NSString stringWithFormat:@"platform=ios&dev=%@&minify=%@&modulesOnly=%@&runMdoule=%@",
                                                enableDev ? @"true" : @"false",
-                                               enableMinification ? @"true" : @"false"];
+                                               enableMinification ? @"true" : @"false",
+                                               modulesOnly ? @"true" : @"false",
+                                               runModule ? @"true" : @"false"];
   NSString *bundleID = [[NSBundle mainBundle] objectForInfoDictionaryKey:(NSString *)kCFBundleIdentifierKey];
   if (bundleID) {
     query = [NSString stringWithFormat:@"%@&app=%@", query, bundleID];