refactor: convert to ECMAScript where necessary

Also drop @league-of-foundry-developers/foundry-vtt-types.

src/migration/007.ts

@@ -1,39 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Johannes Loher
-//
-// SPDX-License-Identifier: MIT
-
-import {
-    getActorUpdateDataGetter,
-    getCompendiumMigrator,
-    getSceneUpdateDataGetter,
-    migrateActors,
-    migrateCompendiums,
-    migrateItems,
-    migrateScenes,
-} from "./migrationHelpers";
-
-async function migrate(): Promise<void> {
-    await migrateItems(getItemUpdateData);
-    await migrateActors(getActorUpdateData);
-    await migrateScenes(getSceneUpdateData);
-    await migrateCompendiums(migrateCompendium);
-}
-
-function getItemUpdateData(itemData: Partial<foundry.data.ItemData["_source"]>) {
-    if (itemData.type !== "spell") return;
-
-    return {
-        data: {
-            allowsDefense: false,
-        },
-    };
-}
-
-const getActorUpdateData = getActorUpdateDataGetter(getItemUpdateData);
-const getSceneUpdateData = getSceneUpdateDataGetter(getActorUpdateData);
-const migrateCompendium = getCompendiumMigrator({ getItemUpdateData, getActorUpdateData, getSceneUpdateData });
-
-export const migration = {
-    migrate,
-    migrateCompendium,
-};