Feature/eslint 9

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- migrated to eslint 9 flat config
+
 ### dependabot: \#49 Bump cross-spawn from 7.0.3 to 7.0.6
 
 ## [1.2.0] - 2025-01-13

eslint.config.mjs

@@ -0,0 +1,3 @@
+import neolutionEslintConfig from "@neolution-ch/eslint-config-neolution";
+
+export default [...neolutionEslintConfig.configs.flat.typescript, { rules: { "unicorn/no-null": "off" } }];

package.json

@@ -31,7 +31,7 @@
   ],
   "scripts": {
     "build": "rollup -c",
-    "lint": "eslint \"**/*.{ts,tsx}\" --cache --max-warnings 0",
+    "lint": "eslint --cache",
     "prepack": "yarn build",
     "prepare-pr": "yarn prettier . --write && yarn lint && yarn build && yarn test",
     "prettier-check": "prettier --check .",
@@ -43,6 +43,7 @@
     "storybook": "start-storybook -p 6006"
   },
   "dependencies": {
+    "@neolution-ch/eslint-config-neolution": "https://pkg.pr.new/neolution-ch/eslint-config-neolution/@neolution-ch/eslint-config-neolution@b64d3d8",
     "date-fns": "^2.30.0",
     "uuid": "^9.0.1"
   },
@@ -60,17 +61,13 @@
     "@typescript-eslint/parser": "^5.59.2",
     "concurrently": "^8.0.1",
     "cross-env": "^7.0.3",
-    "eslint": "^8.45.0",
-    "eslint-config-prettier": "^8.8.0",
-    "eslint-import-resolver-typescript": "^3.5.5",
-    "eslint-plugin-import": "^2.27.5",
+    "eslint": "^9.18.0",
     "eslint-plugin-jest": "^27.2.3",
-    "eslint-plugin-jsdoc": "^46.4.4",
     "eslint-plugin-storybook": "^0.6.12",
     "jest": "^29.6.1",
     "jest-localstorage-mock": "^2.4.26",
     "nodemon": "^2.0.22",
-    "prettier": "^2.8.8",
+    "prettier": "^3.4.2",
     "release-it": "^16.1.2",
     "rollup": "^3.21.4",
     "rollup-plugin-peer-deps-external": "^2.2.4",

rollup.config.mjs

@@ -1,5 +1,5 @@
 import commonjs from "@rollup/plugin-commonjs";
-import nodeResolve from "@rollup/plugin-node-resolve";
+import { default as nodeResolve } from "@rollup/plugin-node-resolve";
 import external from "rollup-plugin-peer-deps-external";
 import terser from "@rollup/plugin-terser";
 import typescript from "rollup-plugin-typescript2";
@@ -35,7 +35,6 @@ export default [
       name: "JavaScriptUtilities",
       sourcemap: true,
       exports: "named",
-      sourcemap: true,
       interop: "auto",
     },
     plugins,
@@ -48,7 +47,6 @@ export default [
       name: "JavaScriptUtilities",
       sourcemap: true,
       exports: "named",
-      sourcemap: true,
     },
     plugins,
   },
@@ -60,7 +58,6 @@ export default [
       name: "JavaScriptUtilities",
       sourcemap: true,
       exports: "named",
-      sourcemap: true,
     },
     plugins,
   },

src/lib/enum.ts

@@ -13,7 +13,7 @@ export type StandardEnum<T> = {
  * @returns A string containing the name of the enum
  */
 export function getEnumNameFromValue<T>(enumVariable: StandardEnum<T>, enumValue: T): string {
-  return Object.keys(enumVariable)[Object.values(enumVariable).findIndex((x) => x === enumValue)];
+  return Object.keys(enumVariable)[Object.values(enumVariable).indexOf(enumValue)];
 }
 
 /**
@@ -23,7 +23,7 @@ export function getEnumNameFromValue<T>(enumVariable: StandardEnum<T>, enumValue
  * @returns A string containing the value of the enum
  */
 export function getEnumValueFromName<T>(enumVariable: StandardEnum<T>, enumName: string): T {
-  const value = Object.values(enumVariable)[Object.keys(enumVariable).findIndex((x) => x === enumName)] as string;
+  const value = Object.values(enumVariable)[Object.keys(enumVariable).indexOf(enumName)] as string;
   return (isEnumString(enumVariable) ? value : Number.parseInt(value)) as T;
 }
 

src/lib/localStorage.spec.ts

@@ -17,7 +17,7 @@ describe("localStorage tests", () => {
   });
 
   test("getLocalStorageItem expired", () => {
-    const expirationDate = new Date(new Date().getTime() - 1);
+    const expirationDate = new Date(Date.now() - 1);
     localStorage.setItem("test", JSON.stringify({ data: true, expirationDate: expirationDate.toISOString() }));
     expect(localStorage.length).toBe(1);
     expect(getLocalStorageItem("test")).toBeUndefined();

src/lib/localStorage.ts

@@ -20,7 +20,7 @@ interface LocalStorageItem<T> {
  */
 const checkLocalStorageSupport = () => {
   if (typeof localStorage === "undefined") {
-    throw new Error("localStorage not supported");
+    throw new TypeError("localStorage not supported");
   }
 };