diff --git a/ReactAndroid/src/main/java/com/facebook/react/common/BUCK b/ReactAndroid/src/main/java/com/facebook/react/common/BUCK
index 3cdee118da4..829e1069830 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/common/BUCK
+++ b/ReactAndroid/src/main/java/com/facebook/react/common/BUCK
@@ -8,7 +8,7 @@ rn_android_library(
     name = "common",
     srcs = glob(
         ["**/*.java"],
-        excludes = SUB_PROJECTS,
+        exclude = SUB_PROJECTS,
     ),
     provided_deps = [
         react_native_dep("third-party/android/support/v4:lib-support-v4"),
diff --git a/ReactAndroid/src/main/jni/first-party/fb/BUCK b/ReactAndroid/src/main/jni/first-party/fb/BUCK
index a63df0b4b2e..f5f74a41c1c 100644
--- a/ReactAndroid/src/main/jni/first-party/fb/BUCK
+++ b/ReactAndroid/src/main/jni/first-party/fb/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//ReactNative:DEFS.bzl", "IS_OSS_BUILD", "JNI_TARGET", "cxx_library")
 
 # This target is only used in open source
diff --git a/ReactCommon/cxxreact/BUCK b/ReactCommon/cxxreact/BUCK
index 12bd664f293..06bf8adbdaf 100644
--- a/ReactCommon/cxxreact/BUCK
+++ b/ReactCommon/cxxreact/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//ReactNative:DEFS.bzl", "ANDROID", "ANDROID_JSC_DEPS", "APPLE", "APPLE_JSC_DEPS", "IS_OSS_BUILD", "get_android_inspector_flags", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
 CXX_LIBRARY_COMPILER_FLAGS = [
@@ -113,14 +114,14 @@ rn_xplat_cxx_library(
     name = "bridge",
     srcs = glob(
         ["*.cpp"],
-        excludes = [
+        exclude = [
             "JSBigString.cpp",
             "SampleCxxModule.cpp",
         ],
     ),
     headers = glob(
         ["*.h"],
-        excludes = CXXREACT_PUBLIC_HEADERS,
+        exclude = CXXREACT_PUBLIC_HEADERS,
     ),
     header_namespace = "",
     exported_headers = dict([
diff --git a/ReactCommon/fabric/activityindicator/BUCK b/ReactCommon/fabric/activityindicator/BUCK
index 708c5fe41eb..952cb7977ff 100644
--- a/ReactCommon/fabric/activityindicator/BUCK
+++ b/ReactCommon/fabric/activityindicator/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
diff --git a/ReactCommon/fabric/attributedstring/BUCK b/ReactCommon/fabric/attributedstring/BUCK
index 8f2c481cb17..61b897ba9d3 100644
--- a/ReactCommon/fabric/attributedstring/BUCK
+++ b/ReactCommon/fabric/attributedstring/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "attributedstring",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/components/image/BUCK b/ReactCommon/fabric/components/image/BUCK
index 5cc0aed4271..fccf34aeb43 100644
--- a/ReactCommon/fabric/components/image/BUCK
+++ b/ReactCommon/fabric/components/image/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
diff --git a/ReactCommon/fabric/components/switch/BUCK b/ReactCommon/fabric/components/switch/BUCK
index 8a4a27ff325..b2a4f8c1d69 100644
--- a/ReactCommon/fabric/components/switch/BUCK
+++ b/ReactCommon/fabric/components/switch/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
diff --git a/ReactCommon/fabric/core/BUCK b/ReactCommon/fabric/core/BUCK
index a444f072680..f663ff3590e 100644
--- a/ReactCommon/fabric/core/BUCK
+++ b/ReactCommon/fabric/core/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "core",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/debug/BUCK b/ReactCommon/fabric/debug/BUCK
index 8bdc3602d50..c16bedf0381 100644
--- a/ReactCommon/fabric/debug/BUCK
+++ b/ReactCommon/fabric/debug/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "debug",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/graphics/BUCK b/ReactCommon/fabric/graphics/BUCK
index ed4891382ef..e0b337da1cd 100644
--- a/ReactCommon/fabric/graphics/BUCK
+++ b/ReactCommon/fabric/graphics/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "graphics",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/imagemanager/BUCK b/ReactCommon/fabric/imagemanager/BUCK
index 0b83274c9a2..a42904ea45f 100644
--- a/ReactCommon/fabric/imagemanager/BUCK
+++ b/ReactCommon/fabric/imagemanager/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
diff --git a/ReactCommon/fabric/scrollview/BUCK b/ReactCommon/fabric/scrollview/BUCK
index ed66b72142d..1f20c65532f 100644
--- a/ReactCommon/fabric/scrollview/BUCK
+++ b/ReactCommon/fabric/scrollview/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "scrollview",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/text/BUCK b/ReactCommon/fabric/text/BUCK
index b6450f45445..e8dc5e5971c 100644
--- a/ReactCommon/fabric/text/BUCK
+++ b/ReactCommon/fabric/text/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "text",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/textlayoutmanager/BUCK b/ReactCommon/fabric/textlayoutmanager/BUCK
index 26f57ef0e90..0095affa737 100644
--- a/ReactCommon/fabric/textlayoutmanager/BUCK
+++ b/ReactCommon/fabric/textlayoutmanager/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -15,11 +16,11 @@ rn_xplat_cxx_library(
             "**/*.cpp",
             "**/*.mm",
         ],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/uimanager/BUCK b/ReactCommon/fabric/uimanager/BUCK
index 2bd48978112..1b091a56325 100644
--- a/ReactCommon/fabric/uimanager/BUCK
+++ b/ReactCommon/fabric/uimanager/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "uimanager",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/fabric/view/BUCK b/ReactCommon/fabric/view/BUCK
index a641805444c..42ea4a7a5d0 100644
--- a/ReactCommon/fabric/view/BUCK
+++ b/ReactCommon/fabric/view/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//configurations/buck/apple:flag_defs.bzl", "OBJC_ARC_PREPROCESSOR_FLAGS", "get_application_ios_flags", "get_debug_preprocessor_flags")
 load("//ReactNative:DEFS.bzl", "ANDROID", "APPLE", "IS_OSS_BUILD", "get_apple_inspector_flags", "react_native_xplat_target", "rn_xplat_cxx_library")
 
@@ -12,11 +13,11 @@ rn_xplat_cxx_library(
     name = "view",
     srcs = glob(
         ["**/*.cpp"],
-        excludes = glob(["tests/**/*.cpp"]),
+        exclude = glob(["tests/**/*.cpp"]),
     ),
     headers = glob(
         ["**/*.h"],
-        excludes = glob(["tests/**/*.h"]),
+        exclude = glob(["tests/**/*.h"]),
     ),
     header_namespace = "",
     exported_headers = subdir_glob(
diff --git a/ReactCommon/jsinspector/BUCK b/ReactCommon/jsinspector/BUCK
index f50840b71dd..ceb0293f71e 100644
--- a/ReactCommon/jsinspector/BUCK
+++ b/ReactCommon/jsinspector/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//ReactNative:DEFS.bzl", "rn_xplat_cxx_library")
 
 EXPORTED_HEADERS = [
@@ -13,7 +14,7 @@ rn_xplat_cxx_library(
         [
             ("", "*.h"),
         ],
-        excludes = EXPORTED_HEADERS,
+        exclude = EXPORTED_HEADERS,
         prefix = "jsinspector",
     ),
     header_namespace = "",
diff --git a/ReactCommon/privatedata/BUCK b/ReactCommon/privatedata/BUCK
index 79983f49d07..abd0de4d498 100644
--- a/ReactCommon/privatedata/BUCK
+++ b/ReactCommon/privatedata/BUCK
@@ -1,3 +1,4 @@
+load("@xplat//tools/build_defs:glob_defs.bzl", "subdir_glob")
 load("//ReactNative:DEFS.bzl", "rn_xplat_cxx_library")
 
 rn_xplat_cxx_library(