fix corner case in `collapse_vars` (#3597)
authorAlex Lam S.L <alexlamsl@gmail.com>
Mon, 18 Nov 2019 18:30:52 +0000 (02:30 +0800)
committerGitHub <noreply@github.com>
Mon, 18 Nov 2019 18:30:52 +0000 (02:30 +0800)
commitc289ba1139781f5619ec92136c2ceaac7d745ba7
treef7731128d509e33ea793a902afe1f4f92b818ee0
parent02cc4a0d0370a79cb868199c58a03cfcd0e4d299
fix corner case in `collapse_vars` (#3597)

fixes #3596
lib/compress.js
lib/output.js
test/compress/collapse_vars.js