fix corner cases in `collapse_vars` & `dead_code` (#4052)
authorAlex Lam S.L <alexlamsl@gmail.com>
Sun, 16 Aug 2020 21:54:27 +0000 (22:54 +0100)
committerGitHub <noreply@github.com>
Sun, 16 Aug 2020 21:54:27 +0000 (05:54 +0800)
commit23f0dca992d89f5955aa1676ca2569e77315906e
tree9657ad15f4cbfa77f79362547de9580c75018fa7
parent45ab3b51d805f69bb77eb71db6af55139e1415dc
fix corner cases in `collapse_vars` & `dead_code` (#4052)

fixes #4051
lib/compress.js
test/compress/collapse_vars.js
test/compress/dead-code.js