Run FastSanitizer in a mix task ends with "no process" error

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2

Mix tasks, by default, don’t start the application. But FastSanitize.basic_html is meant to be called inside a running app. You can tell the task to start your app like this:

defmodule Mix.Tasks.HelloTask do
  use Mix.Task

  @impl Mix.Task
  def run(_) do
    Mix.Task.run("app.start")

    html = """
    <p>blah</p>
    """

    {:ok, res} = FastSanitize.basic_html(html)

    IO.puts(res)
  end
end

and then it should work OK:

$ mix hello_task
Compiling 1 file (.ex)
<p>blah</p>