refactor(GuildAuditLogsEntry): abstract reduce logic into a new function (#9845)

packages/discord.js/src/structures/GuildAuditLogsEntry.js

@@ -83,6 +83,20 @@ const Targets = {
  * @typedef {string} AuditLogTargetType
  */
 
+/**
+ * Contructs an object of known properties for a structure from an array of changes.
+ * @param {AuditLogChange[]} changes The array of changes
+ * @param {Object} [initialData={}] The initial data passed to the function
+ * @returns {Object}
+ * @ignore
+ */
+function changesReduce(changes, initialData = {}) {
+  return changes.reduce((accumulator, change) => {
+    accumulator[change.key] = change.new ?? change.old;
+    return accumulator;
+  }, initialData);
+}
+
 /**
  * Audit logs entry.
  */
@@ -268,10 +282,7 @@ class GuildAuditLogsEntry {
      */
     this.target = null;
     if (targetType === Targets.Unknown) {
-      this.target = this.changes.reduce((o, c) => {
-        o[c.key] = c.new ?? c.old;
-        return o;
-      }, {});
+      this.target = changesReduce(this.changes);
       this.target.id = data.target_id;
       // MemberDisconnect and similar types do not provide a target_id.
     } else if (targetType === Targets.User && data.target_id) {
@@ -285,33 +296,16 @@ class GuildAuditLogsEntry {
         logs?.webhooks.get(data.target_id) ??
         new Webhook(
           guild.client,
-          this.changes.reduce(
-            (o, c) => {
-              o[c.key] = c.new ?? c.old;
-              return o;
-            },
-            {
-              id: data.target_id,
-              guild_id: guild.id,
-            },
-          ),
+          changesReduce(this.changes, {
+            id: data.target_id,
+            guild_id: guild.id,
+          }),
         );
     } else if (targetType === Targets.Invite) {
       let change = this.changes.find(c => c.key === 'code');
       change = change.new ?? change.old;
 
-      this.target =
-        guild.invites.cache.get(change) ??
-        new Invite(
-          guild.client,
-          this.changes.reduce(
-            (o, c) => {
-              o[c.key] = c.new ?? c.old;
-              return o;
-            },
-            { guild },
-          ),
-        );
+      this.target = guild.invites.cache.get(change) ?? new Invite(guild.client, changesReduce(this.changes, { guild }));
     } else if (targetType === Targets.Message) {
       // Discord sends a channel id for the MessageBulkDelete action type.
       this.target =
@@ -321,70 +315,28 @@ class GuildAuditLogsEntry {
     } else if (targetType === Targets.Integration) {
       this.target =
         logs?.integrations.get(data.target_id) ??
-        new Integration(
-          guild.client,
-          this.changes.reduce(
-            (o, c) => {
-              o[c.key] = c.new ?? c.old;
-              return o;
-            },
-            { id: data.target_id },
-          ),
-          guild,
-        );
+        new Integration(guild.client, changesReduce(this.changes, { id: data.target_id }), guild);
     } else if (targetType === Targets.Channel || targetType === Targets.Thread) {
-      this.target =
-        guild.channels.cache.get(data.target_id) ??
-        this.changes.reduce(
-          (o, c) => {
-            o[c.key] = c.new ?? c.old;
-            return o;
-          },
-          { id: data.target_id },
-        );
+      this.target = guild.channels.cache.get(data.target_id) ?? changesReduce(this.changes, { id: data.target_id });
     } else if (targetType === Targets.StageInstance) {
       this.target =
         guild.stageInstances.cache.get(data.target_id) ??
         new StageInstance(
           guild.client,
-          this.changes.reduce(
-            (o, c) => {
-              o[c.key] = c.new ?? c.old;
-              return o;
-            },
-            {
-              id: data.target_id,
-              channel_id: data.options?.channel_id,
-              guild_id: guild.id,
-            },
-          ),
+          changesReduce(this.changes, {
+            id: data.target_id,
+            channel_id: data.options?.channel_id,
+            guild_id: guild.id,
+          }),
         );
     } else if (targetType === Targets.Sticker) {
       this.target =
         guild.stickers.cache.get(data.target_id) ??
-        new Sticker(
-          guild.client,
-          this.changes.reduce(
-            (o, c) => {
-              o[c.key] = c.new ?? c.old;
-              return o;
-            },
-            { id: data.target_id },
-          ),
-        );
+        new Sticker(guild.client, changesReduce(this.changes, { id: data.target_id }));
     } else if (targetType === Targets.GuildScheduledEvent) {
       this.target =
         guild.scheduledEvents.cache.get(data.target_id) ??
-        new GuildScheduledEvent(
-          guild.client,
-          this.changes.reduce(
-            (o, c) => {
-              o[c.key] = c.new ?? c.old;
-              return o;
-            },
-            { id: data.target_id, guild_id: guild.id },
-          ),
-        );
+        new GuildScheduledEvent(guild.client, changesReduce(this.changes, { id: data.target_id, guild_id: guild.id }));
     } else if (targetType === Targets.ApplicationCommand) {
       this.target = logs?.applicationCommands.get(data.target_id) ?? { id: data.target_id };
     } else if (targetType === Targets.AutoModeration) {
@@ -392,13 +344,7 @@ class GuildAuditLogsEntry {
         guild.autoModerationRules.cache.get(data.target_id) ??
         new AutoModerationRule(
           guild.client,
-          this.changes.reduce(
-            (o, c) => {
-              o[c.key] = c.new ?? c.old;
-              return o;
-            },
-            { id: data.target_id, guild_id: guild.id },
-          ),
+          changesReduce(this.changes, { id: data.target_id, guild_id: guild.id }),
           guild,
         );
     } else if (data.target_id) {