chore(deps): bump eslint to v9

.eslintignore

@@ -1,7 +0,0 @@
-# SPDX-FileCopyrightText: 2021 Johannes Loher
-#
-# SPDX-License-Identifier: MIT
-
-/dist
-client
-common

.vscode/settings.json

@@ -1,4 +1,5 @@
 {
   "typescript.tsdk": "node_modules/typescript/lib",
   "typescript.enablePromptUseWorkspaceTsdk": true,
+  "eslint.useFlatConfig": true
 }

eslint.config.js

@@ -0,0 +1,67 @@
+// SPDX-FileCopyrightText: 2025 Johannes Loher
+//
+// SPDX-License-Identifier: MIT
+
+// @ts-check
+
+import eslint from "@eslint/js";
+import eslintConfigPrettier from "eslint-config-prettier";
+import tseslint from "typescript-eslint";
+import globals from "globals";
+
+const foundryGlobals = {
+  ActiveEffect: false,
+  ActiveEffectConfig: false,
+  Actor: false,
+  ActorSheet: false,
+  canvas: false,
+  Canvas: false,
+  ChatMessage: false,
+  CONFIG: false,
+  DocumentSheetConfig: false,
+  game: false,
+  Game: false,
+  Hooks: false,
+  Item: false,
+  ItemSheet: false,
+  Macro: false,
+  Notifications: false,
+  ui: false,
+  loadTemplates: false,
+  foundry: false,
+  Dialog: false,
+  renderTemplate: false,
+  TokenDocument: false,
+  Roll: false,
+  PoolTerm: false,
+  DiceTerm: false,
+  TextEditor: false,
+  CONST: false,
+  getProperty: false,
+  fromUuid: false,
+};
+
+export default tseslint.config(
+  {
+    ignores: ["dist/**", "client", "common"],
+  },
+  eslint.configs.recommended,
+  tseslint.configs.recommended,
+  {
+    languageOptions: {
+      parserOptions: {
+        ecmaVersion: 2020,
+        sourceType: "module",
+      },
+      globals: { ...globals.browser, ...globals.jquery, ...foundryGlobals },
+    },
+  },
+  {
+    files: ["tools/**", "*"],
+    languageOptions: {
+      parserOptions: {},
+      globals: globals.node,
+    },
+  },
+  eslintConfigPrettier,
+);

package.json

@@ -47,9 +47,8 @@
     "clean": "run-p clean:files clean:link",
     "clean:files": "rimraf dist",
     "clean:link": "node ./tools/link-package.js --clean",
-    "lint": "pnpm eslint",
-    "lint:fix": "pnpm eslint --fix",
-    "eslint": "eslint --ext .ts,.js,.cjs,.mjs .",
+    "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
     "format": "pnpm prettier --write",
     "format:check": "pnpm prettier --check",
     "prettier": "prettier './**/*.(ts|js|cjs|mjs|json|scss|yml|yaml)'",
@@ -65,30 +64,31 @@
   "devDependencies": {
     "@commitlint/cli": "19.7.1",
     "@commitlint/config-conventional": "19.7.1",
+    "@eslint/js": "9.20.0",
     "@foundryvtt/foundryvtt-cli": "0.0.9",
     "@guanghechen/rollup-plugin-copy": "6.0.4",
-    "rollup-plugin-styler": "2.0.0",
     "@swc/core": "1.10.16",
     "@types/fs-extra": "11.0.4",
     "@types/jquery": "3.5.32",
     "@types/node": "18.19.76",
-    "@typescript-eslint/eslint-plugin": "7.18.0",
-    "@typescript-eslint/parser": "7.18.0",
     "conventional-changelog-cli": "5.0.0",
     "conventional-changelog-conventionalcommits": "8.0.0",
-    "eslint": "8.57.1",
+    "eslint": "9.20.1",
     "eslint-config-prettier": "10.0.1",
     "fs-extra": "11.3.0",
+    "globals": "15.15.0",
     "handlebars": "4.7.8",
     "npm-run-all": "4.1.5",
     "prettier": "3.5.1",
     "rimraf": "6.0.1",
     "rollup": "4.34.7",
+    "rollup-plugin-styler": "2.0.0",
     "rollup-plugin-swc3": "0.12.1",
     "sass": "1.85.0",
     "semver": "7.7.1",
     "tslib": "2.8.1",
     "typescript": "5.7.3",
+    "typescript-eslint": "8.24.0",
     "vite": "6.1.0",
     "vitest": "3.0.5",
     "yargs": "17.7.2"

src/documents/active-effect.js

@@ -68,7 +68,7 @@ export class DS4ActiveEffect extends ActiveEffect {
     change.value = Roll.replaceFormulaData(change.value, document);
     try {
       change.value = DS4ActiveEffect.safeEval(change.value).toString();
-    } catch (e) {
+    } catch {
       // this is a valid case, e.g., if the effect change simply is a string
     }
     return super.apply(document, change);

src/documents/actor/actor.js

@@ -118,7 +118,7 @@ export class DS4Actor extends Actor {
    * @protected
    */
   static replaceFormulaData(formula, data) {
-    const dataRgx = new RegExp(/@([a-z.0-9_\-]+)/gi);
+    const dataRgx = new RegExp(/@([a-z.0-9_-]+)/gi);
     try {
       return formula.replace(dataRgx, (_, term) => {
         const value = foundry.utils.getProperty(data, term);

src/migration/004.js

@@ -38,8 +38,6 @@ async function migrateItem(item) {
       },
     });
   }
-
-  return updateData;
 }
 
 const migrateActor = getActorMigrator(migrateItem);

src/migration/006.js

@@ -29,7 +29,7 @@ async function migrateItem(item) {
   if (item.type === "spell") {
     const spellCategory = item.system?.spellCategory;
     const spellGroups = migrateSpellCategory(spellCategory);
-    const bonus = itemData.system?.bonus;
+    const bonus = item.system?.bonus;
     const spellModifier = migrateBonus(bonus);
     await item.update({
       system: {