From 4a4cceef2570c2a68ae91db0648aaaf08cf6c426 Mon Sep 17 00:00:00 2001
From: Cedric van Putten <me@bycedric.com>
Date: Thu, 24 Nov 2022 10:15:43 -0800
Subject: [PATCH] Fix hardcoded path to codegen cli for monorepos (#35430)

Summary:
Fixes https://github.com/facebook/react-native/issues/35429

This fix is fairly straightforward. Instead of hardcoding two separate paths for this repo or a simple user's project, we ask Node to resolve `react-native-codegen`.

Because `react-native-codegen` is moved [into the `/packages/*` folder](https://github.com/facebook/react-native/blob/main/package.json#L104), it's part of a workspace in this repository. That means that this fix works not only for monorepos in general but also resolves the right path within the react native repository.

You can test this out yourself when running this command in either the root, or any other workspace in this repository:
```bash
node --print "require('path').dirname(require.resolve('react-native-codegen/package.json'))"
```

I've tested this on Node 16 and 18, and seems to work nicely. Note that you _**have to specify `react-native-codegen/package.json`**_. That's because the `react-native-codegen` package itself is technically invalid; it's missing an entry point within the package (no `main`). When running `node --print "require.resolve('react-native-codegen')"` Node can't resolve the main entry point, and will fail during this process.

## Changelog

<!-- Help reviewers and the release process by writing your own changelog entry. For an example, see:
https://reactnative.dev/contributing/changelogs-in-pull-requests
-->

[iOS] [Fixed] - Fix incorrect codegen CLI paths in monorepo projects

Pull Request resolved: https://github.com/facebook/react-native/pull/35430

Test Plan: See PR https://github.com/facebook/react-native/issues/35429

Reviewed By: cortinico

Differential Revision: D41475878

Pulled By: cipolleschi

fbshipit-source-id: f0c362b64cf9c3543a3a031d7eaf302c1314e3f0
---
 .../react_native_pods_utils/script_phases.sh  | 20 +++++++++----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/scripts/react_native_pods_utils/script_phases.sh b/scripts/react_native_pods_utils/script_phases.sh
index 32c59234407..a46dc8ab17f 100755
--- a/scripts/react_native_pods_utils/script_phases.sh
+++ b/scripts/react_native_pods_utils/script_phases.sh
@@ -13,8 +13,6 @@ GENERATED_SCHEMA_FILE="$GENERATED_SRCS_DIR/schema.json"
 
 cd "$RCT_SCRIPT_RN_DIR"
 
-CODEGEN_REPO_PATH="$RCT_SCRIPT_RN_DIR/packages/react-native-codegen"
-CODEGEN_NPM_PATH="$RCT_SCRIPT_RN_DIR/../react-native-codegen"
 CODEGEN_CLI_PATH=""
 
 error () {
@@ -23,15 +21,6 @@ error () {
     exit 1
 }
 
-# Determine path to react-native-codegen
-if [ -d "$CODEGEN_REPO_PATH" ]; then
-    CODEGEN_CLI_PATH=$(cd "$CODEGEN_REPO_PATH" && pwd)
-elif [ -d "$CODEGEN_NPM_PATH" ]; then
-    CODEGEN_CLI_PATH=$(cd "$CODEGEN_NPM_PATH" && pwd)
-else
-    error "error: Could not determine react-native-codegen location in $CODEGEN_REPO_PATH or $CODEGEN_NPM_PATH. Try running 'yarn install' or 'npm install' in your project root."
-fi
-
 find_node () {
     NODE_BINARY="${NODE_BINARY:-$(command -v node || true)}"
     if [ -z "$NODE_BINARY" ]; then
@@ -41,6 +30,13 @@ find_node () {
     fi
 }
 
+find_codegen () {
+    CODEGEN_CLI_PATH=$("$NODE_BINARY" --print "require('path').dirname(require.resolve('react-native-codegen/package.json'))")
+    if ! [ -d "$CODEGEN_CLI_PATH" ]; then
+        error "error: Could not determine react-native-codegen location, using node module resolution. Try running 'yarn install' or 'npm install' in your project root."
+    fi
+}
+
 setup_dirs () {
     set +e
     rm -rf "$GENERATED_SRCS_DIR"
@@ -116,6 +112,7 @@ moveOutputs () {
 withCodgenDiscovery () {
     setup_dirs
     find_node
+    find_codegen
     generateArtifacts
     moveOutputs
 }
@@ -123,6 +120,7 @@ withCodgenDiscovery () {
 noCodegenDiscovery () {
     setup_dirs
     find_node
+    find_codegen
     generateCodegenSchemaFromJavaScript
     generateCodegenArtifactsFromSchema
     moveOutputs