Activate strict mode

src/module/actor/sheets/actor-sheet.ts

@@ -221,7 +221,7 @@ export class DS4ActorSheet extends ActorSheet<DS4Actor> {
     ): Promise<boolean | undefined | ActorSheet.OwnedItemData<DS4Actor>> {
         const item = ((await Item.fromDropData(data)) as unknown) as DS4Item;
         if (item && !this.actor.canOwnItemType(item.data.type)) {
-            ui.notifications.warn(
+            ui.notifications?.warn(
                 game.i18n.format("DS4.WarningActorCannotOwnItem", {
                     actorName: this.actor.name,
                     actorType: this.actor.data.type,

src/module/ds4.ts

@@ -9,7 +9,7 @@ import { createCheckRoll } from "./rolls/check-factory";
 import { registerSystemSettings } from "./settings";
 import { migration } from "./migrations";
 
-Hooks.once("init", async function () {
+Hooks.once("init", async () => {
     console.log(`DS4 | Initializing the DS4 Game System\n${DS4.ASCII}`);
 
     game.ds4 = {
@@ -68,23 +68,11 @@ async function registerHandlebarsPartials() {
 /**
  * This function runs after game data has been requested and loaded from the servers, so entities exist
  */
-Hooks.once("setup", function () {
-    const noSort = ["attributes", "traits", "combatValues", "creatureSizeCategories"];
-
-    // Localize and sort CONFIG objects
-    for (const o of Object.keys(DS4.i18n)) {
-        const localized = Object.entries(DS4.i18n[o]).map((e) => {
-            return [e[0], game.i18n.localize(e[1] as string)];
-        });
-        if (!noSort.includes(o)) localized.sort((a, b) => a[1].localeCompare(b[1]));
-        DS4.i18n[o] = localized.reduce((obj, e) => {
-            obj[e[0]] = e[1];
-            return obj;
-        }, {});
-    }
+Hooks.once("setup", () => {
+    localizeAndSortConfigObjects();
 });
 
-Hooks.once("ready", function () {
+Hooks.once("ready", () => {
     migration.migrate();
 });
 
@@ -105,3 +93,24 @@ Hooks.once("ready", function () {
             });
     });
 });
+
+/**
+ * Localizes all objects in {@link DS4.i18n} and sorts them unless they are explicitly excluded.
+ */
+function localizeAndSortConfigObjects() {
+    const noSort = ["attributes", "traits", "combatValues", "creatureSizeCategories"];
+
+    const localizeObject = <T extends { [s: string]: string }>(obj: T, sort = true): T => {
+        const localized = Object.entries(obj).map(([key, value]) => {
+            return [key, game.i18n.localize(value)];
+        });
+        if (sort) localized.sort((a, b) => a[1].localeCompare(b[1]));
+        return Object.fromEntries(localized);
+    };
+
+    DS4.i18n = Object.fromEntries(
+        Object.entries(DS4.i18n).map(([key, value]) => {
+            return [key, localizeObject(value, !noSort.includes(key))];
+        }),
+    ) as typeof DS4.i18n;
+}

src/module/item/item-sheet.ts

@@ -83,7 +83,7 @@ export class DS4ItemSheet extends ItemSheet<DS4Item> {
         event.preventDefault();
 
         if (this.item.isOwned) {
-            return ui.notifications.warn(game.i18n.localize("DS4.WarningManageActiveEffectOnOwnedItem"));
+            return ui.notifications?.warn(game.i18n.localize("DS4.WarningManageActiveEffectOnOwnedItem"));
         }
         const a = event.currentTarget;
         const li = $(a).parents(".effect");
@@ -93,7 +93,7 @@ export class DS4ItemSheet extends ItemSheet<DS4Item> {
                 return this._createActiveEffect();
             case "edit":
                 const effect = this.item.effects.get(li.data("effectId"));
-                return effect.sheet.render(true);
+                return effect?.sheet.render(true);
             case "delete": {
                 return this.item.deleteEmbeddedEntity("ActiveEffect", li.data("effectId"));
             }

src/module/migrations.ts

@@ -1,7 +1,7 @@
 import { migrate as migrate001 } from "./migrations/001";
 
 async function migrate(): Promise<void> {
-    if (!game.user.isGM) {
+    if (!game.user?.isGM) {
         return;
     }
 
@@ -18,14 +18,14 @@ async function migrate(): Promise<void> {
 }
 
 async function migrateFromTo(oldMigrationVersion: number, targetMigrationVersion: number): Promise<void> {
-    if (!game.user.isGM) {
+    if (!game.user?.isGM) {
         return;
     }
 
     const migrationsToExecute = migrations.slice(oldMigrationVersion, targetMigrationVersion);
 
     if (migrationsToExecute.length > 0) {
-        ui.notifications.info(
+        ui.notifications?.info(
             game.i18n.format("DS4.InfoSystemUpdateStart", {
                 currentVersion: oldMigrationVersion,
                 targetVersion: targetMigrationVersion,
@@ -40,7 +40,7 @@ async function migrateFromTo(oldMigrationVersion: number, targetMigrationVersion
                 await migration();
                 game.settings.set("ds4", "systemMigrationVersion", currentMigrationVersion);
             } catch (err) {
-                ui.notifications.error(
+                ui.notifications?.error(
                     game.i18n.format("DS4.ErrorDuringMigration", {
                         currentVersion: oldMigrationVersion,
                         targetVersion: targetMigrationVersion,
@@ -54,7 +54,7 @@ async function migrateFromTo(oldMigrationVersion: number, targetMigrationVersion
             }
         }
 
-        ui.notifications.info(
+        ui.notifications?.info(
             game.i18n.format("DS4.InfoSystemUpdateCompleted", {
                 currentVersion: oldMigrationVersion,
                 targetVersion: targetMigrationVersion,

src/module/migrations/001.ts

@@ -1,5 +1,5 @@
 export async function migrate(): Promise<void> {
-    for (const a of game.actors.entities) {
+    for (const a of game.actors?.entities ?? []) {
         const updateData = getActorUpdateData();
         console.log(`Migrating actor ${a.name}`);
         await a.update(updateData, { enforceTypes: false });
@@ -18,7 +18,7 @@ function getActorUpdateData(): Record<string, unknown> {
                 "rangedAttack",
                 "spellcasting",
                 "targetedSpellcasting",
-            ].reduce((acc, curr) => {
+            ].reduce((acc: Partial<Record<string, { "-=base": null }>>, curr) => {
                 acc[curr] = { "-=base": null };
                 return acc;
             }, {}),

src/module/rolls/check-factory.ts

@@ -131,7 +131,8 @@ async function askGmModifier(
     const renderedHtml = await renderTemplate(usedTemplate, templateData);
 
     const dialogPromise = new Promise<HTMLFormElement>((resolve) => {
-        new Dialog({
+        new Dialog(
+            {
                 title: usedTitle,
                 content: renderedHtml,
                 buttons: {
@@ -148,6 +149,9 @@ async function askGmModifier(
                                 );
                             } else {
                                 const innerForm = html[0].querySelector("form");
+                                if (!innerForm) {
+                                    throw new Error(); // TODO: localize
+                                }
                                 resolve(innerForm);
                             }
                         },
@@ -158,7 +162,9 @@ async function askGmModifier(
                     },
                 },
                 default: "ok",
-        }).render(true);
+            },
+            { jQuery: true },
+        ).render(true);
     });
     const dialogForm = await dialogPromise;
     return parseDialogFormData(dialogForm);

src/module/rolls/check.ts

@@ -56,8 +56,8 @@ export class DS4Check extends DiceTerm {
         }
     }
 
-    success = null;
-    failure = null;
+    success: boolean | null = null;
+    failure: boolean | null = null;
     targetValue = DS4Check.DEFAULT_TARGET_VALUE;
     minCritFailure = DS4Check.DEFAULT_MIN_CRIT_FAILURE;
     maxCritSuccess = DS4Check.DEFAULT_MAX_CRIT_SUCCESS;
@@ -94,15 +94,15 @@ export class DS4Check extends DiceTerm {
     }
 
     /** Term Modifiers */
-    noop(): this {
-        return this;
+    noop(): void {
+        return;
     }
 
     // DS4 only allows recursive explosions
-    explode(modifier: string): this {
+    explode(modifier: string): void {
         const rgx = /[xX]/;
         const match = modifier.match(rgx);
-        if (!match) return this;
+        if (!match) return;
 
         this.results = (this.results as Array<RollResult>)
             .map((r) => {

src/module/rolls/roll-executor.ts

@@ -11,7 +11,7 @@ import { calculateRollResult, isDiceSwapNecessary, isSlayingDiceRepetition, sepa
 export function ds4roll(
     checkTargetValue: number,
     rollOptions: Partial<RollOptions> = {},
-    dice: Array<number> = null,
+    dice: Array<number> = [],
 ): RollResult {
     if (checkTargetValue <= 20) {
         return rollCheckSingleDie(checkTargetValue, rollOptions, dice);
@@ -36,11 +36,11 @@ export function ds4roll(
 export function rollCheckSingleDie(
     checkTargetValue: number,
     rollOptions: Partial<RollOptions>,
-    dice: Array<number> = null,
+    dice: Array<number> = [],
 ): RollResult {
     const usedOptions = new DefaultRollOptions().mergeWith(rollOptions);
 
-    if (dice?.length != 1) {
+    if (dice.length != 1) {
         dice = [new DS4RollProvider().getNextRoll()];
     }
     const usedDice = dice;
@@ -75,13 +75,13 @@ export function rollCheckSingleDie(
 export function rollCheckMultipleDice(
     targetValue: number,
     rollOptions: Partial<RollOptions>,
-    dice: Array<number> = null,
+    dice: Array<number> = [],
 ): RollResult {
     const usedOptions = new DefaultRollOptions().mergeWith(rollOptions);
     const remainderTargetValue = targetValue % 20;
     const numberOfDice = Math.ceil(targetValue / 20);
 
-    if (!dice || dice.length != numberOfDice) {
+    if (dice.length != numberOfDice) {
         dice = new DS4RollProvider().getNextRolls(numberOfDice);
     }
     const usedDice = dice;

tsconfig.json

@@ -6,7 +6,7 @@
         "esModuleInterop": true,
         "moduleResolution": "node",
         "forceConsistentCasingInFileNames": true,
-        "strict": false
+        "strict": true
     },
     "include": ["src"]
 }