quick fix: Revert ES6 idiom that istanbul warns about.
quick fix: Revert ES6 idiom that istanbul warns about.

dhcrzf/zulip,tommyip/zulip,synicalsyntax/zulip,showell/zulip,kou/zulip,rishig/zulip,showell/zulip,hackerkid/zulip,brainwane/zulip,zulip/zulip,kou/zulip,andersk/zulip,kou/zulip,rht/zulip,jackrzhang/zulip,rht/zulip,shubhamdhama/zulip,synicalsyntax/zulip,rishig/zulip,shubhamdhama/zulip,jackrzhang/zulip,dhcrzf/zulip,hackerkid/zulip,andersk/zulip,andersk/zulip,kou/zulip,brainwane/zulip,shubhamdhama/zulip,synicalsyntax/zulip,eeshangarg/zulip,rishig/zulip,eeshangarg/zulip,timabbott/zulip,zulip/zulip,zulip/zulip,rht/zulip,punchagan/zulip,tommyip/zulip,brainwane/zulip,dhcrzf/zulip,tommyip/zulip,kou/zulip,rishig/zulip,kou/zulip,dhcrzf/zulip,rishig/zulip,punchagan/zulip,kou/zulip,hackerkid/zulip,tommyip/zulip,showell/zulip,shubhamdhama/zulip,punchagan/zulip,synicalsyntax/zulip,showell/zulip,synicalsyntax/zulip,jackrzhang/zulip,eeshangarg/zulip,rht/zulip,dhcrzf/zulip,zulip/zulip,zulip/zulip,timabbott/zulip,punchagan/zulip,andersk/zulip,tommyip/zulip,eeshangarg/zulip,punchagan/zulip,hackerkid/zulip,dhcrzf/zulip,jackrzhang/zulip,andersk/zulip,jackrzhang/zulip,punchagan/zulip,showell/zulip,showell/zulip,timabbott/zulip,shubhamdhama/zulip,tommyip/zulip,zulip/zulip,rht/zulip,shubhamdhama/zulip,jackrzhang/zulip,punchagan/zulip,eeshangarg/zulip,timabbott/zulip,hackerkid/zulip,rishig/zulip,brainwane/zulip,brainwane/zulip,eeshangarg/zulip,brainwane/zulip,showell/zulip,synicalsyntax/zulip,andersk/zulip,rht/zulip,eeshangarg/zulip,synicalsyntax/zulip,zulip/zulip,hackerkid/zulip,shubhamdhama/zulip,tommyip/zulip,dhcrzf/zulip,timabbott/zulip,timabbott/zulip,hackerkid/zulip,andersk/zulip,brainwane/zulip,rishig/zulip,rht/zulip,jackrzhang/zulip,timabbott/zulip