Rename from .txt to .js, as they're all JavaScript

diff --git a/base.txt b/base.js
similarity index 100%
rename from base.txt
rename to base.js

diff --git a/element.txt b/element.js
similarity index 100%
rename from element.txt
rename to element.js

diff --git a/minify.txt b/minify.js
similarity index 100%
rename from minify.txt
rename to minify.js

diff --git a/nested.txt b/nested.js
similarity index 100%
rename from nested.txt
rename to nested.js

diff --git a/unit_replacement.txt b/unit_replacement.js
similarity index 100%
rename from unit_replacement.txt
rename to unit_replacement.js