From 63f80dab3a8852e26d698e1367c7f4028534a4fa Mon Sep 17 00:00:00 2001
From: Oskar Eichler <62393985+OskarEichler@users.noreply.github.com>
Date: Fri, 28 Aug 2026 10:07:54 +0300
Subject: [PATCH] perf(android): short-circuit package lookup and stream
 descriptor extraction

---
 .../src/config/findComponentDescriptors.ts    | 18 +++++++------
 .../src/config/findPackageClassName.ts        | 26 ++++++++++---------
 .../src/config/getMainActivity.ts             |  2 +-
 3 files changed, 25 insertions(+), 21 deletions(-)

diff --git a/packages/cli-config-android/src/config/findComponentDescriptors.ts b/packages/cli-config-android/src/config/findComponentDescriptors.ts
index b86b38c95..25ea7a6b7 100644
--- a/packages/cli-config-android/src/config/findComponentDescriptors.ts
+++ b/packages/cli-config-android/src/config/findComponentDescriptors.ts
@@ -23,14 +23,16 @@ export function findComponentDescriptors(packageRoot: string) {
     onlyFiles: true,
     ignore: ['**/node_modules/**'],
   });
-  const codegenComponent = files
-    .map((filePath) =>
-      fs.readFileSync(path.join(packageRoot, filePath), 'utf8'),
-    )
-    .map(extractComponentDescriptors)
-    .filter(Boolean);
-
   // Filter out duplicates as it happens that libraries contain multiple outputs due to package publishing.
   // TODO: consider using "codegenConfig" to avoid this.
-  return Array.from(new Set(codegenComponent as string[]));
+  const descriptors = new Set<string>();
+  for (const filePath of files) {
+    const descriptor = extractComponentDescriptors(
+      fs.readFileSync(path.join(packageRoot, filePath), 'utf8'),
+    );
+    if (descriptor) {
+      descriptors.add(descriptor);
+    }
+  }
+  return Array.from(descriptors);
 }
diff --git a/packages/cli-config-android/src/config/findPackageClassName.ts b/packages/cli-config-android/src/config/findPackageClassName.ts
index 6a72848b7..e136dc7d8 100644
--- a/packages/cli-config-android/src/config/findPackageClassName.ts
+++ b/packages/cli-config-android/src/config/findPackageClassName.ts
@@ -32,10 +32,10 @@ export function getMainActivityFiles(
 
 export default function getPackageClassName(folder: string) {
   let files = getMainActivityFiles(folder);
-  let packages = getClassNameMatches(files, folder);
+  const packageClassName = getClassName(files, folder);
 
-  if (packages && packages.length > 0 && Array.isArray(packages[0])) {
-    return packages[0][1];
+  if (packageClassName) {
+    return packageClassName;
   }
 
   /*
@@ -55,17 +55,19 @@ export default function getPackageClassName(folder: string) {
   }
 
   files = getMainActivityFiles(folder, false);
-  packages = getClassNameMatches(files, folder);
-
-  // @ts-ignore
-  return packages.length ? packages[0][1] : null;
+  return getClassName(files, folder);
 }
 
-function getClassNameMatches(files: string[], folder: string) {
-  return files
-    .map((filePath) => fs.readFileSync(path.join(folder, filePath), 'utf8'))
-    .map(matchClassName)
-    .filter((match) => match);
+function getClassName(files: string[], folder: string) {
+  for (const filePath of files) {
+    const match = matchClassName(
+      fs.readFileSync(path.join(folder, filePath), 'utf8'),
+    );
+    if (match) {
+      return match[1];
+    }
+  }
+  return null;
 }
 
 export function matchClassName(file: string) {
diff --git a/packages/cli-config-android/src/config/getMainActivity.ts b/packages/cli-config-android/src/config/getMainActivity.ts
index 702452382..26b25b359 100644
--- a/packages/cli-config-android/src/config/getMainActivity.ts
+++ b/packages/cli-config-android/src/config/getMainActivity.ts
@@ -92,7 +92,7 @@ export default function getMainActivity(manifestPath: string): string | null {
         });
       });
 
-      return mainActivity ? mainActivity['@_android:name'] : null;
+      return mainActivity?.['@_android:name'] ?? null;
     } else {
       return null;
     }