Allow empty config for formatters

Author: AndrewDryga

lib/logger_json/formatters/basic.ex

@@ -26,7 +26,7 @@ defmodule LoggerJSON.Formatters.Basic do
                               conn]a
 
   @impl Formatter
-  def new(opts) do
+  def new(opts \\ []) do
     opts = Keyword.new(opts)
     encoder_opts = Keyword.get_lazy(opts, :encoder_opts, &Formatter.default_encoder_opts/0)
     metadata_keys_or_selector = Keyword.get(opts, :metadata, [])

lib/logger_json/formatters/datadog.ex

@@ -51,7 +51,7 @@ defmodule LoggerJSON.Formatters.Datadog do
   @processed_metadata_keys ~w[pid file line mfa conn]a
 
   @impl Formatter
-  def new(opts) do
+  def new(opts \\ []) do
     opts = Keyword.new(opts)
     encoder_opts = Keyword.get_lazy(opts, :encoder_opts, &Formatter.default_encoder_opts/0)
     redactors = Keyword.get(opts, :redactors, [])

lib/logger_json/formatters/elastic.ex

@@ -144,7 +144,7 @@ defmodule LoggerJSON.Formatters.Elastic do
                               conn]a
 
   @impl Formatter
-  def new(opts) do
+  def new(opts \\ []) do
     opts = Keyword.new(opts)
     encoder_opts = Keyword.get_lazy(opts, :encoder_opts, &Formatter.default_encoder_opts/0)
     metadata_keys_or_selector = Keyword.get(opts, :metadata, [])

lib/logger_json/formatters/google_cloud.ex

@@ -109,7 +109,7 @@ defmodule LoggerJSON.Formatters.GoogleCloud do
   @default_levels_reported_as_errors ~w[emergency alert critical error]a
 
   @impl Formatter
-  def new(opts) do
+  def new(opts \\ []) do
     opts = Keyword.new(opts)
     encoder_opts = Keyword.get_lazy(opts, :encoder_opts, &Formatter.default_encoder_opts/0)
     redactors = Keyword.get(opts, :redactors, [])