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igniter lib igniter util warning.ex
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lib/igniter/util/warning.ex

defmodule Igniter.Util.Warning do
@moduledoc "Utilities for emitting well formatted warnings"
def warn_with_code_sample(igniter, message, code) do
Igniter.add_warning(igniter, formatted_warning(message, code))
end
def formatted_warning(message, code) do
formatted =
Code.format_string!(code)
|> IO.iodata_to_binary()
|> String.split("\n")
|> Enum.map_join("\n", &(" " <> &1))
"""
#{message}
#{formatted}
"""
end
end