fix a lot annoying sentry errors

renderer/viewer/lib/mesher/mesher.ts

@@ -122,12 +122,12 @@ const handleMessage = data => {
     case 'blockUpdate': {
       const loc = new Vec3(data.pos.x, data.pos.y, data.pos.z).floored()
       if (data.stateId !== undefined && data.stateId !== null) {
-        world.setBlockStateId(loc, data.stateId)
+        world?.setBlockStateId(loc, data.stateId)
       }
 
       const chunkKey = `${Math.floor(loc.x / 16) * 16},${Math.floor(loc.z / 16) * 16}`
       if (data.customBlockModels) {
-        world.customBlockModels.set(chunkKey, data.customBlockModels)
+        world?.customBlockModels.set(chunkKey, data.customBlockModels)
       }
       break
     }

src/inventoryWindows.ts

@@ -275,7 +275,7 @@ const mapSlots = (slots: Array<RenderItem | Item | null>, isJei = false) => {
     if (!isJei) {
       const oldKey = lastMappedSlots[i]?.cacheKey
       const newKey = itemToVisualKey(slot)
-      slot['cacheKey'] = newKey
+      slot['cacheKey'] = i + '|' + newKey
       if (oldKey && oldKey === newKey) {
         return lastMappedSlots[i]
       }
@@ -478,6 +478,10 @@ const openWindow = (type: string | undefined) => {
     }
   }
   lastWindow.pwindow.onJeiClick = (slotItem, _index, isRightclick) => {
+    if (versionToNumber(bot.version) < versionToNumber('1.13')) {
+      alert('Item give is broken on 1.12.2 and below, we are working on it!')
+      return
+    }
     // slotItem is the slot from mapSlots
     const itemId = loadedData.itemsByName[slotItem.name]?.id
     if (!itemId) {

src/react/MinimapProvider.tsx

@@ -80,8 +80,13 @@ export class DrawerAdapterImpl extends TypedEventEmitter<MapUpdates> implements
         const readZ = chunkZ % 32 < 0 ? 32 + chunkZ % 32 : chunkZ % 32
         console.log('heightmap check begun', readX, readZ)
         void this.regions.get(regionKey)?.read(readX, readZ)?.then((rawChunk) => {
-          const chunk = simplify(rawChunk as any)
-          const heightmap = findHeightMap(chunk)
+          let heightmap: number[] | undefined
+          try {
+            const chunk = simplify(rawChunk as any)
+            heightmap = findHeightMap(chunk)
+          } catch (err) {
+            console.warn('error getting heightmap', err)
+          }
           if (heightmap) {
             this.isBuiltinHeightmapAvailable = true
             this.loadChunkFullmap = this.loadChunkFromRegion