diff --git a/build/vscripts/api/data/index.ts b/build/vscripts/api/data/index.ts
index 15a9e91..b4059a6 100644
--- a/build/vscripts/api/data/index.ts
+++ b/build/vscripts/api/data/index.ts
@@ -142,6 +142,18 @@ export const classExtensions: Record<string, ExtensionClass> = {
       },
     ],
   },
+  CDOTA_Buff: {
+    members: [
+      {
+        kind: 'function',
+        name: 'IsNull',
+        available: 'both',
+        description: 'Has underlying C++ entity object been deleted?',
+        returns: ['bool'],
+        args: [],
+      },
+    ],
+  },
 };
 
 export const functionExtensions: Record<string, ExtensionFunction> = {
diff --git a/build/vscripts/api/data/moddota-dump.ts b/build/vscripts/api/data/moddota-dump.ts
index f5e9c21..437d3c4 100644
--- a/build/vscripts/api/data/moddota-dump.ts
+++ b/build/vscripts/api/data/moddota-dump.ts
@@ -575,7 +575,7 @@ export const moddotaDump: Record<string, ExtensionFunction> = {
     args: {
       '0': ['itemName'],
       '1': ['owner', ['CDOTAPlayerController', 'nil']],
-      '2': ['purchaser', ['CDOTAPlayerController', 'nil']],
+      '2': ['purchaser', ['CDOTA_BaseNPC_Hero', 'nil']],
     },
   },
   '_G.CreateItemOnPositionForLaunch': {
diff --git a/files/engine-enums.json b/files/engine-enums.json
index c7d8f63..ca09dc4 100644
--- a/files/engine-enums.json
+++ b/files/engine-enums.json
@@ -2639,6 +2639,10 @@
         "name": "ACT_HL2MP_GESTURE_RELOAD_MELEE",
         "shortName": "HL2MP_GESTURE_RELOAD_MELEE"
       },
+      {
+        "name": "ACT_HL2MP_IDLE_CROUCH_MELEE",
+        "shortName": "HL2MP_IDLE_CROUCH_MELEE"
+      },
       {
         "name": "ACT_HL2MP_IDLE_MELEE",
         "shortName": "HL2MP_IDLE_MELEE"
@@ -2675,10 +2679,6 @@
         "name": "ACT_IDLE_AIM_AGITATED",
         "shortName": "IDLE_AIM_AGITATED"
       },
-      {
-        "name": "ACT_IDLE_AIM_AUTOGUN",
-        "shortName": "IDLE_AIM_AUTOGUN"
-      },
       {
         "name": "ACT_IDLE_AIM_DUAL",
         "shortName": "IDLE_AIM_DUAL"
@@ -6530,6 +6530,10 @@
         "name": "DOTA_ABILITY_BEHAVIOR_UNRESTRICTED",
         "shortName": "UNRESTRICTED"
       },
+      {
+        "name": "DOTA_ABILITY_BEHAVIOR_UNSWAPPABLE",
+        "shortName": "UNSWAPPABLE"
+      },
       {
         "name": "DOTA_ABILITY_BEHAVIOR_VECTOR_TARGETING",
         "shortName": "VECTOR_TARGETING"
@@ -6717,6 +6721,10 @@
   {
     "name": "UnitTargetFlags",
     "members": [
+      {
+        "name": "DOTA_UNIT_TARGET_FLAG_CAN_BE_SEEN",
+        "shortName": "CAN_BE_SEEN"
+      },
       {
         "name": "DOTA_UNIT_TARGET_FLAG_CHECK_DISABLE_HELP",
         "shortName": "CHECK_DISABLE_HELP"
diff --git a/files/vscripts/api.json b/files/vscripts/api.json
index 194cc90..e9067e6 100644
--- a/files/vscripts/api.json
+++ b/files/vscripts/api.json
@@ -12791,6 +12791,16 @@
         ],
         "args": []
       },
+      {
+        "kind": "function",
+        "name": "IsNull",
+        "available": "both",
+        "description": "Has underlying C++ entity object been deleted?",
+        "returns": [
+          "bool"
+        ],
+        "args": []
+      },
       {
         "kind": "function",
         "name": "IsStunDebuff",
@@ -35712,7 +35722,7 @@
       {
         "name": "purchaser",
         "types": [
-          "CDOTAPlayerController",
+          "CDOTA_BaseNPC_Hero",
           "nil"
         ]
       }