tree ff23787ce7792fe8b79ed5ceabdc369cee80db60
parent 4f08020cc3f2678ca21b00931eef365d49defed9
author Ariya Hidayat <ariya.hidayat@gmail.com> 1491280401 -0700
committer Ariya Hidayat <ariya.hidayat@gmail.com> 1491490419 -0700

Use const whenever possible

This is also now enforced via TSLint's prefer-const (with TSLint
dependency bumped to v5).

Fix #1817
Closes gh-1823