Support monorepo/custom configuration where node_modules may not be located under app_root

Summary:
This diff supports monorepo/custom configuration where node_modules may not be located under app_root.

The default (RN_root, '..') should support most cases, but I also added an option to provide a custom location for users to set.

Changelog: [internal]

Reviewed By: ShikaSD

Differential Revision: D32469957

fbshipit-source-id: 6b8a6c775c21bde72ef542e34973701d698f678f

Author: sota000

scripts/generate-artifacts.js

@@ -48,11 +48,18 @@ const argv = yargs
     description: 'A flag to control whether to generate fabric components.',
     boolean: 'e',
   })
+  .option('c', {
+    alias: 'configFileDir',
+    default: '',
+    description:
+      'Path where codegen config files are located (e.g. node_modules dir).',
+  })
   .usage('Usage: $0 -p [path to app]')
   .demandOption(['p']).argv;
 
 const RN_ROOT = path.join(__dirname, '..');
 const CODEGEN_CONFIG_FILENAME = argv.f;
+const CODEGEN_CONFIG_FILE_DIR = argv.c;
 const CODEGEN_CONFIG_KEY = argv.k;
 const CODEGEN_FABRIC_ENABLED = argv.e;
 const CODEGEN_REPO_PATH = `${RN_ROOT}/packages/react-native-codegen`;
@@ -80,18 +87,15 @@ function main(appRootDir, outputPath) {
     const dependencies = {...pkgJson.dependencies, ...pkgJson.devDependencies};
 
     // 3. Determine which of these are codegen-enabled libraries
+    const confifDir = CODEGEN_CONFIG_FILE_DIR || path.join(RN_ROOT, '..');
     console.log(
-      `\n\n[Codegen] >>>>> Searching for codegen-enabled libraries in ${appRootDir}`,
+      `\n\n[Codegen] >>>>> Searching for codegen-enabled libraries in ${confifDir}`,
     );
     const libraries = [];
 
     // Handle react-native and third-party libraries
     Object.keys(dependencies).forEach(dependency => {
-      const codegenConfigFileDir = path.join(
-        appRootDir,
-        'node_modules',
-        dependency,
-      );
+      const codegenConfigFileDir = path.join(confifDir, dependency);
       const configFilePath = path.join(
         codegenConfigFileDir,
         CODEGEN_CONFIG_FILENAME,
@@ -165,6 +169,9 @@ function main(appRootDir, outputPath) {
     // 5. For each codegen-enabled library, generate the native code spec files
     libraries.forEach(library => {
       if (!CODEGEN_FABRIC_ENABLED && library.config.type === 'components') {
+        console.log(
+          `[Codegen] ${library.config.name} skipped because fabric is not enabled.`,
+        );
         return;
       }
       const tmpDir = fs.mkdtempSync(

scripts/react_native_pods.rb

@@ -319,8 +319,18 @@ def use_react_native_codegen_discovery!(options={})
   react_native_path = options[:react_native_path] ||= "../node_modules/react-native"
   app_path = options[:app_path]
   fabric_enabled = options[:fabric_enabled] ||= false
+  config_file_dir = options[:config_file_dir] ||= ''
   if app_path
-    Pod::Executable.execute_command('node', ["#{react_native_path}/scripts/generate-artifacts.js", "-p", "#{app_path}", "-o", Pod::Config.instance.installation_root, "-e", "#{fabric_enabled}"])
+    out = Pod::Executable.execute_command(
+      'node',
+      [
+        "#{react_native_path}/scripts/generate-artifacts.js",
+        "-p", "#{app_path}",
+        "-o", Pod::Config.instance.installation_root,
+        "-e", "#{fabric_enabled}",
+        "-c", "#{config_file_dir}",
+      ])
+    Pod::UI.puts out;
   else
     Pod::UI.warn '[Codegen] error: no app_path was provided'
     exit 1