fix corner cases in `collapse_vars`, `unused` & `varify` (#4292)
authorAlex Lam S.L <alexlamsl@gmail.com>
Wed, 18 Nov 2020 00:22:54 +0000 (00:22 +0000)
committerGitHub <noreply@github.com>
Wed, 18 Nov 2020 00:22:54 +0000 (08:22 +0800)
commit0bedd031da4fa8f0eef0fbe6737aa3a4c156a61e
tree196ab67544889fefdec66c861b61a64bc944b998
parentcaa92aea5d6ff4f0ac053df3163a6bc2266002ec
fix corner cases in `collapse_vars`, `unused` & `varify` (#4292)

fixes #4290
lib/compress.js
test/compress/const.js
test/compress/let.js
test/compress/varify.js