As came out from a global crash, when regular browsers of many users refused to operate on wiki pages (details at T136387), the automatic patch inspection should be improved.
ECMA level should be checked.
If you put the rECNO /resources/subscribing/ext.centralNotice.display.state.js code as of rECNO1169f1d27aca132cea636aa970620d5ad70712ee into http://jshint.com/ it will tell you
Line 361 'concise methods' is available in ES6 (use 'esversion: 6') or Mozilla JS extensions (use moz).
Such warnings should block proliferation, and reviewers must not ignore them.