Fix: use NODE_BINARY when starting packager (#24156)

Summary:
Fix packager script to use `NODE_BINARY` env variable.

Should fix #22868

[iOS] [Fixed] - Use `NODE_BINARY` env variable in `packager.sh` script
Pull Request resolved: #24156

Differential Revision: D14870783

Pulled By: cpojer

fbshipit-source-id: 27ecf8bf59883920ab51478b8a4d8f0780e34664

Author: Esemesek

package.json

@@ -36,6 +36,7 @@
     "scripts/launchPackager.command",
     "scripts/packager.sh",
     "scripts/react-native-xcode.sh",
+    "scripts/node-binary.sh",
     "jest-preset.js",
     "jest",
     "lib",

scripts/node-binary.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+[ -z "$NODE_BINARY" ] && export NODE_BINARY="node"
+
+nodejs_not_found()
+{
+  echo "error: Can't find the '$NODE_BINARY' binary to build the React Native bundle. " \
+       "If you have a non-standard Node.js installation, select your project in Xcode, find " \
+       "'Build Phases' - 'Bundle React Native code and images' and change NODE_BINARY to an " \
+       "absolute path to your node executable. You can find it by invoking 'which node' in the terminal." >&2
+  exit 2
+}
+
+type "$NODE_BINARY" >/dev/null 2>&1 || nodejs_not_found

scripts/packager.sh

@@ -13,11 +13,15 @@ PROJECT_ROOT="$THIS_DIR/../../.."
 # shellcheck source=/dev/null
 source "${THIS_DIR}/.packager.env"
 
+# check and assign NODE_BINARY env
+# shellcheck disable=SC1091
+source "${THIS_DIR}/node-binary.sh"
+
 # When running react-native tests, react-native doesn't live in node_modules but in the PROJECT_ROOT
 if [ ! -d "$PROJECT_ROOT/node_modules/react-native" ];
 then
   PROJECT_ROOT="$THIS_DIR/.."
 fi
 # Start packager from PROJECT_ROOT
 cd "$PROJECT_ROOT" || exit
-node "$REACT_NATIVE_ROOT/cli.js" start "$@"
+"$NODE_BINARY" "$REACT_NATIVE_ROOT/cli.js" start "$@"

scripts/react-native-xcode.sh

@@ -93,7 +93,9 @@ if [[ ! -x node && -d ${HOME}/.anyenv/bin ]]; then
   fi
 fi
 
-[ -z "$NODE_BINARY" ] && export NODE_BINARY="node"
+# check and assign NODE_BINARY env
+# shellcheck disable=SC1091
+source './node-binary.sh'
 
 [ -z "$NODE_ARGS" ] && export NODE_ARGS=""
 
@@ -107,18 +109,6 @@ else
   CONFIG_ARG="--config $BUNDLE_CONFIG"
 fi
 
-nodejs_not_found()
-{
-  echo "error: Can't find '$NODE_BINARY' binary to build React Native bundle" >&2
-  echo "If you have non-standard nodejs installation, select your project in Xcode," >&2
-  echo "find 'Build Phases' - 'Bundle React Native code and images'" >&2
-  echo "and change NODE_BINARY to absolute path to your node executable" >&2
-  echo "(you can find it by invoking 'which node' in the terminal)" >&2
-  exit 2
-}
-
-type "$NODE_BINARY" >/dev/null 2>&1 || nodejs_not_found
-
 BUNDLE_FILE="$DEST/main.jsbundle"
 
 "$NODE_BINARY" $NODE_ARGS "$CLI_PATH" $BUNDLE_COMMAND \