Switch buck schema codegen to yarn_workspace_binary (facebook#33773)

Summary:
Pull Request resolved: facebook#33773

I noticed this was a very slow part of my build because each instance of the binary would run its own yarn install. Instead use the yarn_workspace approach to share a single yarn setup.

Changelog: [Internal]

Reviewed By: d16r

Differential Revision: D36164350

fbshipit-source-id: 5290587010fe6021b758bda98bf01995fdf14acd

Author: javache

packages/react-native-codegen/DEFS.bzl

@@ -28,24 +28,21 @@ load(
     "rn_apple_library",
     "rn_xplat_cxx_library",
 )
+load("//tools/build_defs/third_party:yarn_defs.bzl", "yarn_workspace_binary")
 
 # Call this in the react-native-codegen/BUCK file
 def rn_codegen_cli():
     if not IS_OSS_BUILD:
         # FB Internal Setup
-        fb_native.sh_binary(
+        yarn_workspace_binary(
             name = "write_to_json",
-            main = "src/cli/combine/combine_js_to_schema.sh",
-            resources = [
-                "src/cli/combine/combine-js-to-schema.js",
-                "src/cli/combine/combine_js_to_schema.sh",
+            main = "src/cli/combine/combine-js-to-schema-cli.js",
+            root = "//xplat/js:workspace",
+            deps = [
                 ":yarn-workspace",
-                "//xplat/js:setup_env",
-                "//xplat/js:setup_env_vars",
             ],
             visibility = ["PUBLIC"],
         )
-
         fb_native.sh_binary(
             name = "generate_all_from_schema",
             main = "src/cli/generators/generate-all.sh",

packages/react-native-codegen/src/cli/combine/combine_js_to_schema.sh

@@ -11,3 +11,21 @@ def yarn_workspace(name, srcs = [], transform_ignore = None, visibility = None):
         out = "{}.txt".format(name),
         visibility = visibility,
     )
+
+def yarn_workspace_binary(
+        name,
+        main,
+        deps = None,
+        root = None,
+        reuse = None,
+        args = None,
+        env = None,
+        node_args = None,
+        visibility = None):
+    # Noop for OSS vs FB build compatibility for now
+    native.genrule(
+        name = name,
+        cmd = "echo {} > $OUT".format(name),
+        out = "{}.txt".format(name),
+        visibility = visibility,
+    )