Split the module up into multiple files

src/util.js

@@ -0,0 +1,15 @@
+// Searches through all scenes for walls and returns those that match the given filter criteria.
+export function filterAllWalls(filterFn) {
+	// Find all walls that match the filter criteria
+	const scenes = game.scenes.map((scene) => {return {scene: scene, walls: scene.data.walls.filter(filterFn)}})
+	// Drop all scenes that don't contain any results
+	return scenes.filter(scene => scene.walls.length > 0)
+}
+
+// Searches through all scenes for a wall that matches the given filter criteria
+export function findInAllWalls(filterFn) {
+	// TODO The performance of this could be increased by stopping the search on the first hit
+	const scenes = filterAllWalls(filterFn)
+	// If results were found take the first wall from the first scene.
+	return scenes[0]?.walls[0]
+}