♻️ Use more dynamic imports

src/effects/Incinerate.js

@@ -18,7 +18,11 @@ const _ = imports.gettext.domain('burn-my-windows').gettext;
 
 import * as utils from '../utils.js';
 
+// We import some modules only in the Shell process as they are not available in the
+// preferences process. They are used only in the creator function of the ShaderFactory
+// which is only called within GNOME Shell's process.
 const ShaderFactory = await utils.importInShellOnly('./ShaderFactory.js');
+const Clutter       = await utils.importInShellOnly('gi://Clutter');
 
 //////////////////////////////////////////////////////////////////////////////////////////
 // This effect burns windows to ashes. The fire starts at a random position at the      //
@@ -36,10 +40,6 @@ export default class Effect {
   // newly created shader instance.
   constructor() {
     this.shaderFactory = new ShaderFactory(Effect.getNick(), (shader) => {
-      // We import these modules in this function as they are not available in the
-      // preferences process. This callback is only called within GNOME Shell's process.
-      const {Clutter} = imports.gi;
-
       // Store uniform locations of newly created shaders.
       shader._uSeed       = shader.get_uniform_location('uSeed');
       shader._uColor      = shader.get_uniform_location('uColor');