Improve react-native-xcode.sh integration

Author: frantic

local-cli/generator-ios/templates/xcodeproj/project.pbxproj

@@ -525,7 +525,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "../node_modules/react-native/packager/react-native-xcode.sh";
+			shellScript = "export NODE_BINARY=node\n../node_modules/react-native/packager/react-native-xcode.sh";
 			showEnvVarsInLog = 1;
 		};
 /* End PBXShellScriptBuildPhase section */

packager/react-native-xcode.sh

@@ -10,6 +10,8 @@
 # This script is supposed to be invoked as part of Xcode build process
 # and relies on envoronment variables (including PWD) set by Xcode
 
+PACKAGER_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
 case "$CONFIGURATION" in
   Debug)
     DEV=true
@@ -26,9 +28,6 @@ esac
 # Xcode project file for React Native apps is located in ios/ subfolder
 cd ..
 
-set -x
-DEST=$CONFIGURATION_BUILD_DIR/$UNLOCALIZED_RESOURCES_FOLDER_PATH
-
 # Define NVM_DIR and source the nvm.sh setup script
 [ -z "$NVM_DIR" ] && export NVM_DIR="$HOME/.nvm"
 
@@ -43,10 +42,25 @@ if [[ -x "$HOME/.nodenv/bin/nodenv" ]]; then
   eval "$($HOME/.nodenv/bin/nodenv init -)"
 fi
 
-# npm global install path may be a non-standard location
-PATH="$(npm prefix -g)/bin:$PATH"
+[ -z "$NODE_BINARY" ] && export NODE_BINARY="node"
+
+nodejs_not_found()
+{
+  echo "error: Can't find '$NODE_BINARY' binary to build React Native bundle" >&2
+  echo "If you have non-standard nodejs installation, select your project in Xcode," >&2
+  echo "find 'Build Phases' - 'Bundle React Native code and images'" >&2
+  echo "and change NODE_BINARY to absolute path to your node installation" >&2
+  echo "(you can find it by invoking 'which node' in your terminal)" >&2
+  exit 2
+}
+
+type $NODE_BINARY >/dev/null 2>&1 || nodejs_not_found
+
+# Print commands before executing them (useful for troubleshooting)
+set -x
+DEST=$CONFIGURATION_BUILD_DIR/$UNLOCALIZED_RESOURCES_FOLDER_PATH
 
-react-native bundle \
+$NODE_BINARY $PACKAGER_DIR/../local-cli/cli.js bundle \
   --entry-file index.ios.js \
   --platform ios \
   --dev $DEV \