feat: expo user agent

package.json

@@ -29,7 +29,8 @@
     "prepare": "bob build",
     "example": "yarn --cwd example",
     "pods": "cd example && pod-install --quiet",
-    "bootstrap": "yarn example && yarn && yarn pods"
+    "bootstrap": "yarn example && yarn && yarn pods",
+    "postinstall": "node src/postInstall.js"
   },
   "keywords": [
     "react-native",

src/postInstall.js

@@ -0,0 +1,22 @@
+const fs = require('fs');
+
+// set package.json file paths
+const expoPJsonFile = `${__dirname}/../../customerio-expo-plugin/package.json`;
+const rnPJsonFile = `${__dirname}/../package.json`;
+
+// try and catch to prevent errors
+try {
+  // check if expo plugin is installed
+  if (fs.existsSync(expoPJsonFile)) {
+    // read package.json file for current package
+    const rnPJson = fs.readFileSync(rnPJsonFile, 'utf8');
+
+    // import expo plugin's package.json
+    const expoPJson = require(expoPJsonFile);
+
+    const rnPackage = JSON.parse(rnPJson);
+    rnPackage.expoVersion = expoPJson.version;
+
+    fs.writeFileSync(rnPJsonFile, JSON.stringify(rnPackage, null, 2));
+  }
+} catch (error) {} // do nothing if this operation fails