feat: simplify factorio protocol cod a bit

protocols/factorio.js

@@ -3,23 +3,21 @@ import Core from './core.js'
 export default class factorio extends Core {
   async run (state) {
     if (!this.options.port) this.options.port = 34197
-
-    // Don't use the tcp ping probing
     this.usedTcp = true
 
-    const request = await this.request({
-        url: `https://multiplayer.factorio.com/get-game-details/${this.options.address}:${this.options.port}`,
-        responseType: 'json'
-      })
+    const serverInfo = await this.request({
+      url: `https://multiplayer.factorio.com/get-game-details/${this.options.address}:${this.options.port}`,
+      responseType: 'json'
+    })
 
-    const serverInfo = request
+    const players = serverInfo.players || [] // the 'players' field is undefined if there are no players
 
     state.name = serverInfo.name
     state.password = serverInfo.has_password
-    state.numplayers = serverInfo.players?.length || 0 // players is undefined if there are no players
+    state.numplayers = players.length
     state.maxplayers = serverInfo.max_players
-    state.players = serverInfo.players?.map(player => ({ name: player, raw: {} })) || []
-    
+    state.players = players.map(player => ({ name: player, raw: {} }))
+
     state.raw = serverInfo
   }
 }