fix Doesn't work on Mac #9

Author: klapperkopp

package.json

@@ -26,7 +26,7 @@
   "scripts": {
     "configure": "node-gyp configure",
     "build": "node-gyp configure build --jobs max",
-    "postinstall": "install_name_tool -change @rpath/libDynamsoftBarcodeReader.dylib @loader_path/libDynamsoftBarcodeReader.dylib build/Release/dbr.node",
+    "postinstall": "node ./scripts/postinstall.js",
     "clean": "node-gyp clean"
   },
   "gypfile": true

scripts/postinstall.js

@@ -0,0 +1,22 @@
+var exec = require('child_process').exec;
+var os = require('os');
+
+function puts(error, stdout, stderr) { console.error(error) }
+
+const commands_linux = []
+
+const commands_darwin = [
+    "install_name_tool -change @rpath/libDynamsoftBarcodeReader.dylib @loader_path/libDynamsoftBarcodeReader.dylib build/Release/dbr.node"
+]
+
+const commands_windows = []
+
+// Run command depending on the OS
+if (os.type() === 'Linux') {
+    if(commands_linux.length > 0) exec(commands_linux.join('&&'), puts);
+} else if (os.type() === 'Darwin') {
+    if(commands_darwin.length > 0) exec(commands_darwin.join('&&'), puts);
+} else if (os.type() === 'Windows_NT') {
+    if(commands_windows.length > 0) exec(commands_windows.join('&&'), puts);
+}
+