add eslint and prettier

src/module/item/item-data.ts

@@ -0,0 +1,2 @@
+// TODO: Actually add a type for data
+export type DS4ItemDataType = unknown;

src/module/item/item-sheet.ts

@@ -1,10 +1,14 @@
+import { DS4ActorDataType } from "../actor/actor-data";
+import { DS4Item } from "./item";
+import { DS4ItemDataType } from "./item-data";
+
 /**
  * Extend the basic ItemSheet with some very simple modifications
  * @extends {ItemSheet}
  */
-export class DS4ItemSheet extends ItemSheet {
+export class DS4ItemSheet extends ItemSheet<DS4ActorDataType, DS4Item> {
     /** @override */
-    static get defaultOptions() {
+    static get defaultOptions(): FormApplicationOptions {
         return mergeObject(super.defaultOptions, {
             width: 530,
             height: 400,
@@ -14,7 +18,7 @@ export class DS4ItemSheet extends ItemSheet {
     }
 
     /** @override */
-    get template() {
+    get template(): string {
         const path = "systems/ds4/templates/item";
         return `${path}/${this.item.data.type}-sheet.hbs`;
     }
@@ -22,7 +26,7 @@ export class DS4ItemSheet extends ItemSheet {
     /* -------------------------------------------- */
 
     /** @override */
-    getData() {
+    getData(): ItemSheetData<DS4ItemDataType> {
         const data = { ...super.getData(), config: CONFIG.DS4 };
         console.log(data);
         return data;
@@ -31,7 +35,7 @@ export class DS4ItemSheet extends ItemSheet {
     /* -------------------------------------------- */
 
     /** @override */
-    setPosition(options = {}) {
+    setPosition(options = {}): unknown {
         const position = super.setPosition(options);
         const sheetBody = (this.element as JQuery).find(".sheet-body"); // TODO: Why is the cast necessary?
         const bodyHeight = position.height - 192;
@@ -42,7 +46,7 @@ export class DS4ItemSheet extends ItemSheet {
     /* -------------------------------------------- */
 
     /** @override */
-    activateListeners(html) {
+    activateListeners(html: JQuery): void {
         super.activateListeners(html);
 
         if (!this.options.editable) return;
@@ -52,7 +56,7 @@ export class DS4ItemSheet extends ItemSheet {
         html.find(".effect-edit").click((ev) => {
             const li = $(ev.currentTarget).parents(".effect");
             console.log(li.data("effectId"));
-            const effect = this.item.effects.get(li.data("effectId"));
+            const effect = this.item["effects"].get(li.data("effectId")); // TODO: replace ["..."]
             effect.sheet.render(true);
         });
 
@@ -67,7 +71,7 @@ export class DS4ItemSheet extends ItemSheet {
      * @param {Event} event   The originating click event
      * @private
      */
-    async _onEffectCreate(event) {
+    async _onEffectCreate(event: JQuery.ClickEvent): Promise<unknown> {
         event.preventDefault();
 
         const label = `New Effect`;

src/module/item/item.ts

@@ -1,17 +1,19 @@
+import { DS4ItemDataType } from "./item-data";
+
 /**
  * Extend the basic Item with some very simple modifications.
  * @extends {Item}
  */
-export class DS4Item extends Item {
+export class DS4Item extends Item<DS4ItemDataType> {
     /**
      * Augment the basic Item data model with additional dynamic data.
      */
-    prepareData() {
+    prepareData(): void {
         super.prepareData();
 
         // Get the Item's data
-        const itemData = this.data;
-        const actorData = this.actor ? this.actor.data : {};
-        const data = itemData.data;
+        // const itemData = this.data;
+        // const actorData = this.actor ? this.actor.data : {};
+        // const data = itemData.data;
     }
 }