use a custom collection of serializers instead of the default list

src/main/java/com/gmail/nossr50/config/ConfigManager.java

@@ -44,6 +44,7 @@ import com.gmail.nossr50.config.skills.alchemy.PotionConfig;
 import com.gmail.nossr50.config.treasure.ExcavationTreasureConfig;
 import com.gmail.nossr50.config.treasure.FishingTreasureConfig;
 import com.gmail.nossr50.config.treasure.HerbalismTreasureConfig;
+import com.gmail.nossr50.datatypes.experience.FormulaType;
 import com.gmail.nossr50.datatypes.party.PartyFeature;
 import com.gmail.nossr50.datatypes.skills.PrimarySkillType;
 import com.gmail.nossr50.datatypes.skills.SubSkillType;
@@ -55,6 +56,7 @@ import com.gmail.nossr50.skills.salvage.salvageables.SalvageableManager;
 import com.gmail.nossr50.util.experience.ExperienceMapManager;
 import com.google.common.collect.Maps;
 import com.google.common.reflect.TypeToken;
+import ninja.leaping.configurate.objectmapping.serialize.TypeSerializerCollection;
 import ninja.leaping.configurate.objectmapping.serialize.TypeSerializers;
 import org.bukkit.Material;
 
@@ -82,6 +84,10 @@ public final class ConfigManager {
     private SalvageableManager salvageableManager;
     private BonusDropManager bonusDropManager;
 
+    /* CUSTOM SERIALIZERS */
+
+    private TypeSerializerCollection customSerializers;
+
     /* MOD MANAGERS */
 
     //TODO: Add these back when modded servers become a thing again
@@ -305,12 +311,24 @@ public final class ConfigManager {
             DEFAULT_SERIALIZERS.registerType(TypeToken.of(Pattern.class), new PatternSerializer());
          */
 
+        customSerializers = TypeSerializers.newCollection();
+
         mcMMO.p.getLogger().info("Registering custom type serializers for Configurate...");
-        TypeSerializers.getDefaultSerializers().registerType(new TypeToken<Material>() {}, new CustomEnumValueSerializer());
-        TypeSerializers.getDefaultSerializers().registerType(new TypeToken<PartyFeature>() {}, new CustomEnumValueSerializer());
-        TypeSerializers.getDefaultSerializers().registerType(TypeToken.of(Repairable.class), new RepairableSerializer());
-        TypeSerializers.getDefaultSerializers().registerType(TypeToken.of(Salvageable.class), new SalvageableSerializer());
-        TypeSerializers.getDefaultSerializers().registerType(TypeToken.of(MinecraftMaterialWrapper.class), new MinecraftMaterialWrapperSerializer());
+        customSerializers.registerType(new TypeToken<Material>() {}, new CustomEnumValueSerializer());
+        customSerializers.registerType(new TypeToken<PartyFeature>() {}, new CustomEnumValueSerializer());
+        customSerializers.registerType(new TypeToken<FormulaType>() {}, new CustomEnumValueSerializer());
+        customSerializers.registerType(TypeToken.of(Repairable.class), new RepairableSerializer());
+        customSerializers.registerType(TypeToken.of(Salvageable.class), new SalvageableSerializer());
+        customSerializers.registerType(TypeToken.of(MinecraftMaterialWrapper.class), new MinecraftMaterialWrapperSerializer());
+    }
+
+    /**
+     * Gets the serializers registered and used by mcMMO
+     * This includes all default serializers
+     * @return our custom serializers
+     */
+    public TypeSerializerCollection getCustomSerializers() {
+        return customSerializers;
     }
 
     private void registerSkillConfig(PrimarySkillType primarySkillType, Class clazz)

src/main/java/com/gmail/nossr50/config/hocon/SerializedConfigLoader.java

@@ -62,7 +62,9 @@ public class SerializedConfigLoader<T> {
             "\nYou can also consult the new official wiki" +
             "\nhttps://mcmmo.org/wiki - Keep in mind the wiki is a WIP and may not have information about everything in mcMMO!";
 
-    private static final ConfigurationOptions LOADER_OPTIONS = ConfigurationOptions.defaults().setHeader(CONFIG_HEADER);
+    private ConfigurationOptions configurationOptions;
+    private CommentedConfigurationNode data;
+    private CommentedConfigurationNode fileData;
 
     private final String ROOT_NODE_ADDRESS;
 
@@ -78,16 +80,6 @@ public class SerializedConfigLoader<T> {
      */
     private HoconConfigurationLoader loader;
 
-    /**
-     * A node representation of "whats actually in the file".
-     */
-    private CommentedConfigurationNode fileData = SimpleCommentedConfigurationNode.root(LOADER_OPTIONS);
-
-    /**
-     * A node representation of {@link #fileData}, merged with the data of {@link #parent}.
-     */
-    private CommentedConfigurationNode data = SimpleCommentedConfigurationNode.root(LOADER_OPTIONS);
-
     /**
      * The mapper instance used to populate the config instance
      */
@@ -104,7 +96,15 @@ public class SerializedConfigLoader<T> {
                 Files.createFile(path);
             }
 
-            this.loader = HoconConfigurationLoader.builder().setPath(path).build();
+            configurationOptions = ConfigurationOptions.defaults().setSerializers(mcMMO.getConfigManager().getCustomSerializers()).setHeader(CONFIG_HEADER);
+            data = SimpleCommentedConfigurationNode.root(configurationOptions);
+            fileData = SimpleCommentedConfigurationNode.root(configurationOptions);
+
+            this.loader = HoconConfigurationLoader.builder()
+                    .setPath(path)
+                    .setDefaultOptions(configurationOptions)
+                    .build();
+
             this.configMapper = ObjectMapper.forClass(clazz).bindToNew();
 
             reload();
@@ -128,7 +128,7 @@ public class SerializedConfigLoader<T> {
     public boolean save() {
         try {
             // save from the mapped object --> node
-            CommentedConfigurationNode saveNode = SimpleCommentedConfigurationNode.root(LOADER_OPTIONS);
+            CommentedConfigurationNode saveNode = SimpleCommentedConfigurationNode.root(configurationOptions);
             this.configMapper.serialize(saveNode.getNode(ROOT_NODE_ADDRESS));
 
             // before saving this config, remove any values already declared with the same value on the parent