Volt.CSS.AST (Volt v0.13.0)

Helpers for parser-backed CSS AST transforms.

Centralizes the Vize parse → mutate → print flow so CSS transforms handle parse and print failures consistently.

Summary

Walk CSS URL nodes without accumulator state.

Walk CSS URL nodes with accumulator state.

Parse CSS, apply an AST transform, and print the result.

@type transform_result() ::
  {:ok, %{code: String.t(), metadata: term()}} | {:error, term()}

@spec postwalk_urls(term(), (String.t(), map() -> map())) :: term()

Walk CSS URL nodes without accumulator state.

@spec postwalk_urls(term(), term(), (String.t(), map(), term() -> {map(), term()})) ::
  {term(), term()}

Walk CSS URL nodes with accumulator state.

@spec transform(String.t(), String.t() | nil, (term() -> {term(), term()})) ::
  transform_result()

Parse CSS, apply an AST transform, and print the result.