Upgrade linting tooling to latest version

.github/actions/npm-publish/action.yml

@@ -10,7 +10,7 @@ inputs:
   require-build:
     default: true
   release-directory:
-    default: './'
+    default: "./"
 
 runs:
   using: composite
@@ -23,8 +23,8 @@ runs:
       uses: actions/setup-node@v4
       with:
         node-version: ${{ inputs.node-version }}
-        cache: 'npm'
-        registry-url: 'https://registry.npmjs.org'
+        cache: "npm"
+        registry-url: "https://registry.npmjs.org"
 
     - name: Install dependencies
       shell: bash

.github/actions/tag-exists/action.yml

@@ -14,7 +14,7 @@ inputs:
 
 outputs:
   exists:
-    description: 'Whether the tag exists or not'
+    description: "Whether the tag exists or not"
     value: ${{ steps.tag-exists.outputs.EXISTS }}
 
 runs:

.github/stale.yml

@@ -17,4 +17,4 @@ staleLabel: closed:stale
 
 # Comment to post when marking as stale. Set to `false` to disable
 markComment: >
-  This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If you have not received a response for our team (apologies for the delay) and this is still a blocker, please reply with additional information or just a ping. Thank you for your contribution! 🙇‍♂️
+  This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If you have not received a response for our team (apologies for the delay) and this is still a blocker, please reply with additional information or just a ping. Thank you for your contribution! 🙇‍♂️

.github/workflows/build.yml

@@ -3,9 +3,9 @@ name: Build and Test
 on:
   workflow_dispatch:
   push:
-    branches: [ main, beta ]
+    branches: [main, beta]
   pull_request:
-    branches: [ main, beta ]
+    branches: [main, beta]
 
 permissions:
   contents: read
@@ -15,11 +15,10 @@ concurrency:
   cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
 
 jobs:
-
   build:
     strategy:
       matrix:
-        node: [ 18, 20 ]
+        node: [18, 20]
 
     name: Build Package (Node ${{ matrix.node }})
     runs-on: ubuntu-latest
@@ -35,15 +34,15 @@ jobs:
 
       - name: Install dependencies
         run: npm ci
-      
+
       - name: Build package
         run: npm run build
-        
+
       - name: Lint
-        run: npm run lint && npm run lint:package
-        
+        run: npm run lint && npm run lint:package && npm run format:check
+
       - name: Run tests against browser
         run: npm run test:browser
-        
+
       - name: Run tests against Node
         run: npm run test:node

.github/workflows/npm-release.yml

@@ -10,7 +10,7 @@ on:
         default: true
         type: string
       release-directory:
-        default: './'
+        default: "./"
         type: string
     secrets:
       github-token:
@@ -77,4 +77,4 @@ jobs:
           body: ${{ steps.get_release_notes.outputs.release-notes }}
           tag: ${{ steps.get_version.outputs.version }}
           commit: ${{ github.sha }}
-          prerelease: ${{ steps.get_prerelease.outputs.prerelease }}
+          prerelease: ${{ steps.get_prerelease.outputs.prerelease }}

.github/workflows/release.yml

@@ -22,4 +22,4 @@ jobs:
       require-build: true
     secrets:
       npm-token: ${{ secrets.NPM_TOKEN }}
-      github-token: ${{ secrets.GITHUB_TOKEN }}
+      github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/semgrep.yml

@@ -7,7 +7,7 @@ on:
     branches: ["master", "main"]
 
   schedule:
-    - cron: '30 0 1,15 * *'
+    - cron: "30 0 1,15 * *"
 
 jobs:
   semgrep:

.github/workflows/snyk.yml

@@ -11,7 +11,7 @@ on:
     branches:
       - main
   schedule:
-    - cron: '30 0 1,15 * *'
+    - cron: "30 0 1,15 * *"
 
 permissions:
   contents: read

CHANGELOG.md

@@ -31,19 +31,23 @@ The `jwtDecode` function is now no longer the default export, and is instead pro
 [Full Changelog](https://github.com/auth0/jwt-decode/compare/v4.0.0-beta.3..v4.0.0-beta.4)
 
 **Breaking changes**
+
 - Raise minimum Node.js version to 18 [\#209](https://github.com/auth0/jwt-decode/pull/209) ([jonkoops](https://github.com/jonkoops))
 
 **Fixed**
+
 - fix default condition should be the last one [\#199](https://github.com/auth0/jwt-decode/pull/199) ([frederikprijck](https://github.com/frederikprijck))
 
 ## Version [4.0.0-beta.3](https://github.com/auth0/jwt-decode/releases/tag/v4.0.0-beta.3)
 
 [Full Changelog](https://github.com/auth0/jwt-decode/compare/v4.0.0-beta.2..v4.0.0-beta.3)
 
 **Breaking changes**
+
 - Drop UMD bundle [\#193](https://github.com/auth0/jwt-decode/pull/193) ([frederikprijck](https://github.com/frederikprijck))
 
 **Changed**
+
 - Use modern JavaScript syntax [\#187](https://github.com/auth0/jwt-decode/pull/187) ([jonkoops](https://github.com/jonkoops))
 - Use ESNext as default module system [\#188](https://github.com/auth0/jwt-decode/pull/188) ([jonkoops](https://github.com/jonkoops))
 - Avoid using any bundlers but use tsc instead [\#192](https://github.com/auth0/jwt-decode/pull/192) ([frederikprijck](https://github.com/frederikprijck))
@@ -53,17 +57,20 @@ The `jwtDecode` function is now no longer the default export, and is instead pro
 [Full Changelog](https://github.com/auth0/jwt-decode/compare/v4.0.0-beta.1..v4.0.0-beta.2)
 
 **Changed**
+
 - Avoid using default exports [\#175](https://github.com/auth0/jwt-decode/pull/175) ([frederikprijck](https://github.com/frederikprijck))
 - Make options optional no default function parameter initializer [\#179](https://github.com/auth0/jwt-decode/pull/179) ([cristobal](https://github.com/cristobal))
 
 **Fixed**
+
 - Ensure types are bundled and correctly linked [\#174](https://github.com/auth0/jwt-decode/pull/174) ([jonkoops](https://github.com/jonkoops))
 
 ## Version [4.0.0-beta.1](https://github.com/auth0/jwt-decode/releases/tag/v4.0.0-beta.1)
 
 [Full Changelog](https://github.com/auth0/jwt-decode/compare/v4.0.0-beta.0..v4.0.0-beta.1)
 
 **Fixed**
+
 - Ensure build is run on prepack [\#167](https://github.com/auth0/jwt-decode/pull/167) ([frederikprijck](https://github.com/frederikprijck))
 
 ## Version [4.0.0-beta.0](https://github.com/auth0/jwt-decode/releases/tag/v4.0.0-beta.0)

README.md

@@ -32,10 +32,10 @@ const decoded = jwtDecode(token);
 console.log(decoded);
 
 /* prints:
- * { 
+ * {
  *   foo: "bar",
  *   exp: 1393286893,
- *   iat: 1393268893  
+ *   iat: 1393268893
  * }
  */
 
@@ -44,9 +44,9 @@ const decodedHeader = jwtDecode(token, { header: true });
 console.log(decodedHeader);
 
 /* prints:
- * { 
+ * {
  *   typ: "JWT",
- *   alg: "HS256" 
+ *   alg: "HS256"
  * }
  */
 ```
@@ -73,22 +73,24 @@ global.atob = decode;
 ## Errors
 
 This library works with valid JSON web tokens. The basic format of these token is
+
 ```
 [part1].[part2].[part3]
 ```
+
 All parts are supposed to be valid base64 (url) encoded json.
 Depending on the `{ header: <option> }` option it will decode part 1 (only if header: true is specified) or part 2 (default)
 
 Not adhering to the format will result in a `InvalidTokenError` with one of the following messages:
 
-- `Invalid token specified: must be a string` => the token passed was not a string, this library only works on strings. 
-- `Invalid token specified: missing part #` => this probably means you are missing a dot (`.`) in the token 
+- `Invalid token specified: must be a string` => the token passed was not a string, this library only works on strings.
+- `Invalid token specified: missing part #` => this probably means you are missing a dot (`.`) in the token
 - `Invalid token specified: invalid base64 for part #` => the part could not be base64 decoded (the message should contain the error the base64 decoder gave)
 - `Invalid token specified: invalid json for part #` => the part was correctly base64 decoded, however, the decoded value was not valid JSON (the message should contain the error the JSON parser gave)
 
 #### Use with TypeScript
 
-The return type of the `jwtDecode` function is determined by the `header` property of the object passed as the second argument. If omitted (or set to false), it'll use `JwtPayload`, when true it will use `JwtHeader`. 
+The return type of the `jwtDecode` function is determined by the `header` property of the object passed as the second argument. If omitted (or set to false), it'll use `JwtPayload`, when true it will use `JwtHeader`.
 If needed, you can specify what the expected return type should be by passing a type argument to the `jwtDecode` function.
 
 You can extend both `JwtHeader` and `JwtPayload` to include non-standard claims or properties.

eslint.config.ts

@@ -0,0 +1,26 @@
+import eslint from "@eslint/js";
+import eslintConfigPrettier from "eslint-config-prettier/flat";
+import { defineConfig, globalIgnores } from "eslint/config";
+import tseslint from "typescript-eslint";
+
+export default defineConfig(
+  globalIgnores(["build", "coverage"]),
+  eslint.configs.recommended,
+  tseslint.configs.strictTypeChecked,
+  tseslint.configs.stylisticTypeChecked,
+  eslintConfigPrettier,
+  {
+    languageOptions: {
+      parserOptions: {
+        projectService: true,
+      },
+    },
+  },
+  {
+    files: ["lib/**/*.ts"],
+    rules: {
+      "@typescript-eslint/no-unnecessary-type-parameters": "off",
+      "@typescript-eslint/restrict-template-expressions": "off",
+    },
+  },
+);

lib/index.ts

@@ -51,7 +51,7 @@ function base64UrlDecode(str: string) {
 
   try {
     return b64DecodeUnicode(output);
-  } catch (err) {
+  } catch {
     return atob(output);
   }
 }
@@ -69,7 +69,7 @@ export function jwtDecode<T = JwtHeader | JwtPayload>(
     throw new InvalidTokenError("Invalid token specified: must be a string");
   }
 
-  options ||= {};
+  options ??= {};
 
   const pos = options.header === true ? 0 : 1;
   const part = token.split(".")[pos];