yarn lock format problem??

Author: akirasosa

yarn.lock

@@ -2286,7 +2286,7 @@ isstream@~0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
 
-istanbul-instrumenter-loader@1.2.0:
+istanbul-instrumenter-loader@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/istanbul-instrumenter-loader/-/istanbul-instrumenter-loader-1.2.0.tgz#bef469049b81b23581d0d4db37a271206033cc52"
   dependencies: