Extract out FBReactNativeSpec's core components including Unimplemented from auto-generated registry (facebook#51941)

Summary:
Pull Request resolved: facebook#51941

Changelog:
[Android][Fixed] - Extract out FBReactNativeSpec's core components including Unimplemented from auto-generated registry

Extracting out `FBReactNativeSpec`'s core components including `UnimplementedNativeView` from auto-generated registry. Using this `libraryName` to skip merging those modules

Reviewed By: RSNara

Differential Revision: D76371796

fbshipit-source-id: 4cfee0fe80a661f159a5f17e0d4abc60f601ea74

Author: arushikesarwani94

packages/react-native-codegen/src/CodegenSchema.js

@@ -13,6 +13,7 @@
 export type PlatformType = 'iOS' | 'android';
 
 export type SchemaType = $ReadOnly<{
+  libraryName?: string,
   modules: $ReadOnly<{
     [hasteModuleName: string]: ComponentSchema | NativeModuleSchema,
   }>,

packages/react-native-codegen/src/cli/combine/combine-js-to-schema-cli.js

@@ -28,17 +28,24 @@ const argv = yargs
     alias: 'exclude',
     default: null,
   })
+  .option('l', {
+    describe: 'Library name to use for schema generation',
+    alias: 'libraryName',
+    default: null,
+  })
   .parseSync();
 
 const [outfile, ...fileList] = argv._;
 const platform: ?string = argv.platform;
 const exclude: string = argv.exclude;
 const excludeRegExp: ?RegExp =
   exclude != null && exclude !== '' ? new RegExp(exclude) : null;
+const libraryName: ?string = argv.libraryName;
 
 combineSchemasInFileListAndWriteToFile(
   fileList,
   platform != null ? platform.toLowerCase() : platform,
   outfile,
   excludeRegExp,
+  libraryName,
 );

packages/react-native-codegen/src/cli/combine/combine-js-to-schema.js

@@ -21,8 +21,11 @@ const path = require('path');
 const flowParser = new FlowParser();
 const typescriptParser = new TypeScriptParser();
 
-function combineSchemas(files: Array<string>): SchemaType {
-  return files.reduce(
+function combineSchemas(
+  files: Array<string>,
+  libraryName: ?string,
+): SchemaType {
+  const combined = files.reduce(
     (merged, filename) => {
       const contents = fs.readFileSync(filename, 'utf8');
 
@@ -46,6 +49,11 @@ function combineSchemas(files: Array<string>): SchemaType {
     },
     {modules: {}},
   );
+
+  return {
+    libraryName: libraryName || '',
+    modules: combined.modules,
+  };
 }
 
 function expandDirectoriesIntoFiles(
@@ -74,13 +82,14 @@ function combineSchemasInFileList(
   fileList: Array<string>,
   platform: ?string,
   exclude: ?RegExp,
+  libraryName: ?string,
 ): SchemaType {
   const expandedFileList = expandDirectoriesIntoFiles(
     fileList,
     platform,
     exclude,
   );
-  const combined = combineSchemas(expandedFileList);
+  const combined = combineSchemas(expandedFileList, libraryName);
   if (Object.keys(combined.modules).length === 0) {
     console.error(
       'No modules to process in combine-js-to-schema-cli. If this is unexpected, please check if you set up your NativeComponent correctly. See combine-js-to-schema.js for how codegen finds modules.',
@@ -94,8 +103,14 @@ function combineSchemasInFileListAndWriteToFile(
   platform: ?string,
   outfile: string,
   exclude: ?RegExp,
+  libraryName: ?string,
 ): void {
-  const combined = combineSchemasInFileList(fileList, platform, exclude);
+  const combined = combineSchemasInFileList(
+    fileList,
+    platform,
+    exclude,
+    libraryName,
+  );
   const formattedSchema = JSON.stringify(combined);
   fs.writeFileSync(outfile, formattedSchema);
 }

packages/react-native-codegen/src/cli/combine/combine-schemas-cli.js

@@ -99,8 +99,15 @@ for (const file of schemaFiles) {
         }
       }
 
-      modules[specName] = module;
-      specNameToFile[specName] = file;
+      if (
+        module.type === 'Component' &&
+        schema.libraryName === 'FBReactNativeSpec'
+      ) {
+        continue;
+      } else {
+        modules[specName] = module;
+        specNameToFile[specName] = file;
+      }
     }
   }
 }