Ignore lines for non-jest environment

Author: eps1lon

src/act-compat.js

@@ -16,15 +16,19 @@ function actPolyfill(cb) {
 }
 
 function getGlobalThis() {
+  /* istanbul ignore else */
   if (typeof self !== 'undefined') {
     return self
   }
+  /* istanbul ignore next */
   if (typeof window !== 'undefined') {
     return window
   }
+  /* istanbul ignore next */
   if (typeof global !== 'undefined') {
     return global
   }
+  /* istanbul ignore next */
   throw new Error('unable to locate global object')
 }