fastify · kibertoad · Mar 2, 2026 · Feb 27, 2026 · Feb 27, 2026 · Mar 2, 2026
diff --git a/.prettierrc.json b/.prettierrc.json
diff --git a/.taprc b/.taprc
diff --git a/README.md b/README.md
@@ -3,6 +3,7 @@
 [![NPM Version][npm-image]][npm-url]
 [![NPM Downloads][downloads-image]][downloads-url]
 [![CI](https://github.com/fastify/fastify-request-context/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/fastify/fastify-request-context/actions/workflows/ci.yml)
+[![neostandard javascript style](https://img.shields.io/badge/code_style-neostandard-brightgreen?style=flat)](https://github.com/neostandard/neostandard)
 
 Request-scoped storage support, based on [AsyncLocalStorage](https://nodejs.org/api/async_context.html#asynchronous-context-tracking).
 
@@ -13,14 +14,14 @@ nor will variables remain available once a request is completed.
 
 Frequent use-cases are persisting request-aware logger instances and user authorization information.
 
-
-
 ## Install
+
 ```
 npm i @fastify/request-context
 ```
 
 ### Compatibility
+
 | Plugin version | Fastify version |
 | ---------------|-----------------|
 | `>=6.x`        | `^5.x`          |
@@ -29,7 +30,6 @@ npm i @fastify/request-context
 | `^1.x`         | `^2.x`          |
 | `^1.x`         | `^1.x`          |
 
-
 Please note that if a Fastify version is out of support, then so are the corresponding versions of this plugin
 in the table above.
 See [Fastify's LTS policy](https://github.com/fastify/fastify/blob/main/docs/Reference/LTS.md) for more details.
@@ -133,7 +133,7 @@ return app.ready()
 In TypeScript you are expected to augment the module to type your context:
 
 ```ts
-import {requestContext} from '@fastify/request-context'
+import { requestContext } from '@fastify/request-context'
 
 declare module '@fastify/request-context' {
   interface RequestContextData {

diff --git a/eslint.config.js b/eslint.config.js
@@ -1,18 +1,6 @@
 'use strict'
 
-const globals = require('globals')
-const js = require('@eslint/js')
-const prettier = require('eslint-plugin-prettier/recommended')
-
-module.exports = [
-  {
-    languageOptions: {
-      globals: {
-        ...globals.node,
-        ...globals.jest,
-      },
-    },
-  },
-  js.configs.recommended,
-  prettier,
-]
+module.exports = require('neostandard')({
+  ignores: require('neostandard').resolveIgnoresFromGitignore(),
+  ts: true,
+})
diff --git a/index.js b/index.js
@@ -24,14 +24,14 @@ const requestContext = {
   },
 }
 
-function fastifyRequestContext(fastify, opts, next) {
+function fastifyRequestContext (fastify, opts, next) {
   fastify.decorate('requestContext', requestContext)
   fastify.decorateRequest('requestContext', { getter: () => requestContext })
   fastify.decorateRequest(asyncResourceSymbol, null)
   const hook = opts.hook || 'onRequest'
   const hasDefaultStoreValuesFactory = typeof opts.defaultStoreValues === 'function'
 
-  fastify.addHook(hook, function requestContextHook(req, _res, done) {
+  fastify.addHook(hook, function requestContextHook (req, _res, done) {
     const defaultStoreValues = hasDefaultStoreValuesFactory
       ? opts.defaultStoreValues(req)
       : opts.defaultStoreValues
@@ -51,7 +51,7 @@ function fastifyRequestContext(fastify, opts, next) {
   // in a different async context, as req/res may emit events in a different context.
   // Related to https://github.com/nodejs/node/issues/34430 and https://github.com/nodejs/node/issues/33723
   if (hook === 'onRequest' || hook === 'preParsing') {
-    fastify.addHook('preValidation', function requestContextPreValidationHook(req, _res, done) {
+    fastify.addHook('preValidation', function requestContextPreValidationHook (req, _res, done) {
       const asyncResource = req[asyncResourceSymbol]
       asyncResource.runInAsyncScope(done, req.raw)
     })

diff --git a/package.json b/package.json
@@ -16,20 +16,18 @@
     "test": "npm run test:unit && npm run test:typescript",
     "test:unit": "c8 --100 node --test",
     "test:typescript": "tsd",
-    "lint": "eslint \"test/**/*.js\" \"test-tap/**/*.js\" index.js",
-    "prettier": "prettier --write \"{lib,test,test-tap}/**/*.js\" index.js \"types/**/*.ts\""
+    "lint": "eslint",
+    "lint:fix": "eslint --fix"
   },
   "dependencies": {
     "fastify-plugin": "^5.0.0"
   },
   "devDependencies": {
     "@types/node": "^25.0.3",
     "c8": "^11.0.0",
-    "eslint": "^10.0.2",
-    "eslint-config-prettier": "^10.0.1",
-    "eslint-plugin-prettier": "^5.1.3",
+    "eslint": "^9.39.0",
     "fastify": "^5.0.0",
-    "prettier": "^3.2.5",
+    "neostandard": "^0.12.0",
     "superagent": "^10.0.0",
     "tsd": "^0.33.0"
   },

diff --git a/test/internal/appInitializer.js b/test/internal/appInitializer.js
@@ -3,15 +3,15 @@
 const fastify = require('fastify')
 const { fastifyRequestContext } = require('../..')
 
-function initAppGet(endpoint) {
+function initAppGet (endpoint) {
   const app = fastify({ logger: true })
   app.register(fastifyRequestContext)
 
   app.get('/', endpoint)
   return app
 }
 
-function initAppPost(endpoint) {
+function initAppPost (endpoint) {
   const app = fastify({ logger: true })
   app.register(fastifyRequestContext)
 
@@ -20,7 +20,7 @@ function initAppPost(endpoint) {
   return app
 }
 
-function initAppPostWithPrevalidation(endpoint) {
+function initAppPostWithPrevalidation (endpoint) {
   const app = fastify({ logger: true })
   app.register(fastifyRequestContext, { hook: 'preValidation' })
 
@@ -40,7 +40,7 @@ function initAppPostWithPrevalidation(endpoint) {
   return app
 }
 
-function initAppPostWithAllPlugins(endpoint, requestHook) {
+function initAppPostWithAllPlugins (endpoint, requestHook) {
   const app = fastify({ logger: true })
   app.register(fastifyRequestContext, { hook: requestHook })
 
@@ -85,7 +85,7 @@ function initAppPostWithAllPlugins(endpoint, requestHook) {
   return app
 }
 
-function initAppGetWithDefaultStoreValues(endpoint, defaultStoreValues) {
+function initAppGetWithDefaultStoreValues (endpoint, defaultStoreValues) {
   const app = fastify({ logger: true })
   app.register(fastifyRequestContext, {
     defaultStoreValues,

diff --git a/test/internal/testService.js b/test/internal/testService.js
@@ -4,29 +4,29 @@ const { requestContext } = require('../..')
 
 // Test class to check if nested calls with promises work correctly with async local storage
 class TestService {
-  constructor(fastify) {
+  constructor (fastify) {
     this.appRequestContext = fastify.requestContext
   }
 
-  processRequest(requestId) {
+  processRequest (requestId) {
     return this.fetchData().then(() => {
       const testValueFromApp = this.appRequestContext.get('testKey')
       const testValueFromLib = requestContext.get('testKey')
       if (testValueFromApp !== `testValue${requestId}`) {
         throw new Error(
-          `Wrong value retrieved from app context for request ${requestId}: ${testValueFromApp}`,
+          `Wrong value retrieved from app context for request ${requestId}: ${testValueFromApp}`
         )
       }
 
       if (testValueFromLib !== `testValue${requestId}`) {
         throw new Error(
-          `Wrong value retrieved from lib context for request ${requestId}: ${testValueFromLib}`,
+          `Wrong value retrieved from lib context for request ${requestId}: ${testValueFromLib}`
         )
       }
     })
   }
 
-  fetchData() {
+  fetchData () {
     return new Promise((resolve) => {
       setTimeout(resolve, 10)
     })

diff --git a/test/internal/watcherService.js b/test/internal/watcherService.js
@@ -4,15 +4,15 @@ const { executionAsyncId, createHook, AsyncResource } = require('node:async_hook
 const { EventEmitter } = require('node:events')
 
 class CustomResource extends AsyncResource {
-  constructor(type, traceId) {
+  constructor (type, traceId) {
     super(type)
 
     this.traceId = traceId
   }
 }
 
 class AsyncWatcher extends EventEmitter {
-  setupInitHook() {
+  setupInitHook () {
     // init is called during object construction. The resource may not have
     // completed construction when this callback runs, therefore all fields of the
     // resource referenced by "asyncId" may not have been populated.
@@ -28,7 +28,7 @@ class AsyncWatcher extends EventEmitter {
     return this
   }
 
-  setupDestroyHook() {
+  setupDestroyHook () {
     // Destroy is called when an AsyncWrap instance is destroyed.
     this.destroy = (asyncId) => {
       this.emit('DESTROY', {
@@ -39,7 +39,7 @@ class AsyncWatcher extends EventEmitter {
     return this
   }
 
-  start() {
+  start () {
     createHook({
       init: this.init.bind(this),
       destroy: this.destroy.bind(this),
@@ -50,7 +50,7 @@ class AsyncWatcher extends EventEmitter {
 }
 
 class AsyncHookContainer {
-  constructor(types) {
+  constructor (types) {
     const checkedTypes = types
 
     const idMap = new Map()
@@ -86,7 +86,7 @@ class AsyncHookContainer {
     this.watcher = watcher
   }
 
-  getStore(asyncId) {
+  getStore (asyncId) {
     let resource = this.resourceMap.get(asyncId)
 
     if (resource != null) {

diff --git a/test/requestContextPlugin.e2e.spec.js b/test/requestContextPlugin.e2e.spec.js
@@ -1,3 +1,4 @@
+/* eslint-disable promise/param-names */
 'use strict'
 
 const request = require('superagent')
@@ -26,7 +27,7 @@ describe('requestContextPlugin E2E', () => {
           const route = (req) => {
             const requestId = req.requestContext.get('testKey')
 
-            function prepareReply() {
+            function prepareReply () {
               return testService.processRequest(requestId.replace('testValue', '')).then(() => {
                 const storedValue = req.requestContext.get('testKey')
                 return Promise.resolve({ storedValue })
@@ -104,7 +105,7 @@ describe('requestContextPlugin E2E', () => {
 
             const requestId = `testValue${preHandlerValue}`
 
-            function prepareReply() {
+            function prepareReply () {
               return testService.processRequest(requestId.replace('testValue', '')).then(() => {
                 const storedValue = req.requestContext.get('preValidation')
                 return Promise.resolve({ storedValue: `testValue${storedValue}` })

diff --git a/test-tap/requestContextPlugin.e2e.test.js → test/requestContextPlugin.e2e.test.js b/test-tap/requestContextPlugin.e2e.test.js → test/requestContextPlugin.e2e.test.js
@@ -1,3 +1,4 @@
+/* eslint-disable promise/param-names */
 'use strict'
 
 const fastify = require('fastify')
@@ -29,7 +30,7 @@ test('correctly preserves values set in prevalidation phase within single POST r
         const route = (req) => {
           const requestId = req.requestContext.get('testKey')
 
-          function prepareReply() {
+          function prepareReply () {
             return testService.processRequest(requestId.replace('testValue', '')).then(() => {
               const storedValue = req.requestContext.get('testKey')
               return Promise.resolve({ storedValue })
@@ -107,7 +108,7 @@ test('correctly preserves values set in multiple phases within single POST reque
 
           const requestId = `testValue${preHandlerValue}`
 
-          function prepareReply() {
+          function prepareReply () {
             return testService.processRequest(requestId.replace('testValue', '')).then(() => {
               const storedValue = req.requestContext.get('preValidation')
               return Promise.resolve({ storedValue: `testValue${storedValue}` })

diff --git a/test/requestContextPlugin.spec.js b/test/requestContextPlugin.spec.js
@@ -1,3 +1,4 @@
+/* eslint-disable promise/param-names */
 'use strict'
 
 const {
@@ -24,7 +25,7 @@ describe('requestContextPlugin', () => {
       const promiseRequest2 = new Promise((resolveRequest2Promise) => {
         const promiseRequest1 = new Promise((resolveRequest1Promise) => {
           const route = (req, reply) => {
-            function prepareReply() {
+            function prepareReply () {
               return testService.processRequest(requestId).then(() => {
                 const storedValue = req.requestContext.get('testKey')
                 reply.status(200).send({
@@ -99,7 +100,7 @@ describe('requestContextPlugin', () => {
       const promiseRequest2 = new Promise((resolveRequest2Promise) => {
         const promiseRequest1 = new Promise((resolveRequest1Promise) => {
           const route = (req, reply) => {
-            function prepareReply() {
+            function prepareReply () {
               return testService.processRequest(requestId).then(() => {
                 const storedValue = req.requestContext.get('testKey')
                 reply.status(200).send({
@@ -176,7 +177,7 @@ describe('requestContextPlugin', () => {
           const route = (req, reply) => {
             const requestId = req.requestContext.get('testKey')
 
-            function prepareReply() {
+            function prepareReply () {
               return testService.processRequest(requestId.replace('testValue', '')).then(() => {
                 const storedValue = req.requestContext.get('testKey')
                 reply.status(200).send({
@@ -289,7 +290,7 @@ describe('requestContextPlugin', () => {
       const promiseRequest2 = new Promise((resolveRequest2Promise) => {
         const promiseRequest1 = new Promise((resolveRequest1Promise) => {
           const route = (req, reply) => {
-            function prepareReply() {
+            function prepareReply () {
               return testService.processRequest(requestId).then(() => {
                 const storedValue = req.requestContext.get('testKey')
                 reply.status(204).header('storedvalue', storedValue).send()

diff --git a/tsconfig.json b/tsconfig.json
@@ -2,11 +2,11 @@
   "compilerOptions": {
     "outDir": "dist",
     "module": "commonjs",
-    "target": "es2015",
+    "target": "es2022",
     "sourceMap": true,
     "declaration": true,
     "declarationMap": false,
-    "types": ["node", "jest"],
+    "types": ["node"],
     "strict": true,
     "moduleResolution": "node",
     "noUnusedLocals": false,
@@ -17,15 +17,10 @@
     "noImplicitThis": true,
     "strictNullChecks": true,
     "importHelpers": true,
-    "baseUrl": ".",
     "allowSyntheticDefaultImports": true,
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
     "exactOptionalPropertyTypes": true
   },
-  "exclude": [
-    "node_modules",
-    "test",
-    "dist"
-  ]
+  "exclude": ["node_modules", "test", "dist"]
 }
diff --git a/types/index.d.ts b/types/index.d.ts
@@ -69,7 +69,7 @@ declare namespace fastifyRequestContext {
   export { fastifyRequestContext as default }
 }
 
-declare function fastifyRequestContext(
+declare function fastifyRequestContext (
   ...params: Parameters<FastifyRequestContext>
 ): ReturnType<FastifyRequestContext>
 export = fastifyRequestContext
diff --git a/types/index.test-d.ts b/types/index.test-d.ts
@@ -68,6 +68,7 @@ expectType<AsyncLocalStorage<RequestContext>>(asyncLocalStorage)
 const getHandler: RouteHandlerMethod = function (request, _reply) {
   expectType<RequestContext>(request.requestContext)
 }
+expectType<RouteHandlerMethod>(getHandler)
 
 expectType<string | undefined>(requestContext.get('a'))
 expectType<FastifyBaseLogger | undefined>(requestContext.get('log'))