Whole-file transforms. These are not codemods.
Everything in IgniterCss is diff-minimal by construction. The functions here
deliberately are not: minifying and beautifying rewrite every byte, and
minifying discards comments, because that is what minifying is.
Use them for build-time output and reporting. Do not use them to patch a
user's stylesheet — IgniterCss.set_declaration/5 and friends exist for that,
and they never route their output through here.
Summary
Functions
Re-print the stylesheet with one declaration per line and consistent indentation, keeping every comment.
Concatenate stylesheets, then drop rules a later copy makes redundant.
Strip comments and collapse whitespace.
Types
@type opts() :: keyword()
Functions
Re-print the stylesheet with one declaration per line and consistent indentation, keeping every comment.
iex> IgniterCss.Transform.beautify(".a{color:red;margin:0}")
{:ok, ".a {\n color: red;\n margin: 0;\n}\n"}Concatenate stylesheets, then drop rules a later copy makes redundant.
A rule is dropped only when a later one has the same selector and a byte-identical body, so an intentional override survives.
iex> IgniterCss.Transform.merge_stylesheets([".a { color: red; }", ".a { color: red; }"])
{:ok, ".a { color: red; }\n"}Strip comments and collapse whitespace.
Driven by the token stream rather than by text matching, so a ; inside
url(...) or a /* inside a string is never mistaken for syntax. Whitespace
is kept only where removing it would change how the result tokenises, so
@media screen and (min-width: 40em) keeps the space after and.
iex> IgniterCss.Transform.minify(".a {\n color: red;\n}\n")
{:ok, ".a{color:red}"}