Add emulator-launcher.

lib/input-validator.js

@@ -30,3 +30,9 @@ function checkHeadless(headless) {
     }
 }
 exports.checkHeadless = checkHeadless;
+function checkDisableAnimations(disableAnimations) {
+    if (disableAnimations !== 'true' && disableAnimations !== 'false') {
+        throw new Error(`Input for input.disable-animations should be either 'true' or 'false'.`);
+    }
+}
+exports.checkDisableAnimations = checkDisableAnimations;