update shim const handling

scripts/module.js

@@ -1,12 +1,12 @@
 import { api } from './api.js'
-import { log, shim, CONST } from './shim.js'
+import { log } from './shim.js'
 
 function _checkModule (name) {
   if (!game.modules.get(name)?.active && game.user.isGM) {
     let action = 'install and activate'
     if (game.modules.get(name)) action = 'activate'
     ui.notifications.error(
-            `SWADE MB Helpers requires the ${name} module. Please ${action} it.`)
+      `SWADE MB Helpers requires the ${name} module. Please ${action} it.`)
   }
 }
 
@@ -14,7 +14,5 @@ Hooks.on('setup', api.registerFunctions)
 
 Hooks.on('ready', () => {
   _checkModule('warpgate')
-  CONST.FOUNDRY = foundry.CONST
-  CONST.SWADE = CONFIG.SWADE.CONST
   log('Initialized SWADE MB Helpers')
 })

scripts/shim.js

@@ -1,6 +1,15 @@
-export const CONST = {
-  SWADE: null,
-  FOUNDRY: null
+export class CONST {
+  static get SWADE () {
+    return CONFIG.SWADE.CONST
+  }
+
+  static get FOUNDRY () {
+    return foundry.CONST
+  }
+
+  static get WARPGATE () {
+    return warpgate.CONST
+  }
 }
 
 export class shim {