Support multi-line script.

lib/emulator-manager.js

@@ -66,7 +66,7 @@ function killEmulator() {
             yield exec.exec(`${ADB_PATH} -s emulator-5554 emu kill`);
         }
         catch (error) {
-            console.log('No emulator running on port 5554');
+            console.log(error.message);
         }
     });
 }
@@ -76,7 +76,6 @@ exports.killEmulator = killEmulator;
  */
 function waitForDevice() {
     return __awaiter(this, void 0, void 0, function* () {
-        const adbPath = `${process.env.ANDROID_HOME}/platform-tools/adb`;
         let booted = false;
         let attempts = 0;
         const retryInterval = 2; // retry every 2 seconds
@@ -84,7 +83,7 @@ function waitForDevice() {
         while (!booted) {
             try {
                 let result = '';
-                yield exec.exec(`${adbPath} shell getprop sys.boot_completed`, [], {
+                yield exec.exec(`${ADB_PATH} shell getprop sys.boot_completed`, [], {
                     listeners: {
                         stdout: (data) => {
                             result += data.toString();