On the dialog that appears, we can name our API as "Contacts API" (the name isn't really important) and identify it as https://contacts.blog-samples.com/ (we will use this value later). For AIX the minimum supported architecture has been raised from Power 7 to Power 8. On April 19th, the team behind Node.js decided to release another major update to the JavaScript tool Node.js 18. The indices array is available via the .indices property on match objects when the regular expression has the /d flag. Privacy Policy, Become A Partner - Earn a 10% commission rate, see our range of Node.js development services here, download our comprehensive guide on JavaScript, TypeScript, and Node.js, in the form of a free e-book, here, Node.js is now experimental on the 32-bit Windows platform, the minimum required version of macOS is now 10.15, Node.js shook up the world of enterprise IT, In case your app is too big to easily migrate, and you need help, or if you are building web apps with Node.js in mind, dont hesitate to get in touch. To find them in the changelog, you'd need to review the semver major sections of all of the initial releases Node 12 and higher is now required 15.2 - 2022-03-04 Added t.hasProp, t.hasProps, t.hasOwnProp, and t.hasOwnProps Made it possible to split snapshot output by setting t.snapshotFile Parser: more correct handling of #and \characters ensure that test point IDs are not repeated catch invalid test point IDs when a trailing plan is used This Node.js v14.x release also comes with the newly upgraded Javascript engine: v8.1! Enables calendar and numberingSystem options for Intl.DateTimeFormat, blog post by Michael Dawson and Bethany Griggs recommends, Experimental Web Assembly System Interface, social identity providers (like Facebook, GitHub, Twitter, etc. He responded with this quote: In case you arent aware of the biggest advantages of Node.js and its languages: JavaScript and TypeScript, then a few of the most important ones are: We covered this topic a few times already: in case you want everything in one place, feel free to download our comprehensive guide on JavaScript, TypeScript, and Node.js, in the form of a free e-book, here. Solution 1: downgrade your node version Solution 2: fix those erros by upgrading all librairies see: How to resolve Angular update issue Conflicting peer That warning has now been removed. . achieved via "chaining": foo-loader calls bar-loader calls qux-loader To learn more about this feature, check out the official documentation. Some of the recently released features in Node.js 15, which will also be available in Node.js 16, include: Node.js provides pre-built binaries for several different platforms. Since then we shipped a lot of features without breaking changes. Notable Breaking Changes the compatible semver ranges of node have been updated to: ^14.17.0 || ^16.13.0 || >=18.0.0 npm will no longer attempt to modify ownership of files it creates the presence of auth related settings that are not scoped to a specific registry found in a config file is no longer supported and will throw errors This code example prints the following outputs before and after async stack traces got into Node.js. Details about the supported toolchains and compilers are documented in the Node.js BUILDING.md file. Angular Version 12 vs 11 : Breaking Changes and New Deprecations: The HMR in Angular 11 vs Angular 12 is enabled while initiating an application with ng serve. WebThe default Lambda runtime has changed from NodeJS 12 to NodeJS 14, given this is now the default runtime recommended by AWS. To generate a snapshot using snapshot.js as an entry point and write the snapshot blob to snapshot.blob: To restore application state from snapshot.blob, with index.js as the entry point script for the deserialized application: Users can also use the v8.startupSnapshot API to specify an entry point at snapshot building time, thus avoiding the need of an additional entry script at deserialization time: Node.js ESM Loader hooks now support multiple custom loaders, and composition is Wed like to take this opportunity to highlight some of those in the Node.js 14 release even though they may already have been backported to earlier releases. You can fall back to the previous behavior to read the default section by: Note that when specifying --openssl-shared-config or defining nodejs_conf in your openssl.cnf, you should be cautious and review your configuration as it could lead to you being vulnerable to similar DLL exploit attacks. Most transpilation workflows support features such as optional file extensions or JSON modules that the Node.js ESM implementation does not support. We can see the support and release line here: Securing Node.js applications with Auth0 is easy and brings a lot of great features to the table. Privacy Policy. npm i --save-dev jest@24.8.0. Node.js 10 will go End-of-Life at the end of this month (April 2021). and will remain so until October 2023. You may have fewer teams working on your products, with the same or bigger efficiency; The tool will prove useful for you no matter the company size; You may reduce iteration time dramatically. The experimental Async Hooks API was introduced in earlier versions as part of this work. Workers offer Node.js an opportunity to become a player on the field of data science beside R, Scala, Python and more. It is our belief that the current implementation offers a future proof model to authoring ESM modules that paves the path to Universal JavaScript. If we are developing a mobile application, we will use the Authorization Code Grant Flow with PKCE. // app definition and contacts array Kapehe is an R&D Content Engineer for Auth0 with a passion for learning and teaching. Node.js 12 support will be dropped in the next This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. We ideate, design & build industry leading digital products to help your company. As a reminder Node.js 12 will remain in long-term support until April 2022, and Node.js 14 will remain in long-term support until April 2023. In this release, the highlights incorporate an upgrade of V8, enhanced diagnostics, modifications of the Streams APIs, an experimental Async Local Storage API, the reduction of a few long disapproved APIs, and the reduction of the Experimental Modules warning. The nature of our release process means that new features are released in the Current release line approximately every two weeks. Easy, right? See https://nodejs.org/en/blog/vulnerability/openssl-fixes-in-regular-releases-may2022/ for more information on how the May 2022 OpenSSL releases affect other Node.js release lines. Here we cover most of the significant changes to NodeJS in v18. The implementation was first introduced in v11.2.0 and it will be taken out from experimental in this release. There are many things to look forward to with this major release. The new tool should feel familiar to many Node.js & front-end developers alike. Node.js is a collaborative open source project dedicated to building and supporting the Node.js platform. Therefore, we can head back to the APIs section in our Auth0 dashboard, click on the API we created before, and then click on the Test section of this API. This is an important step in the ongoing Breaking Changes Support added for TypeScript 4.2. TypeScript <4.2.3 is no longer supported. Explanation: install-links is the only config or command in the list that has an effect on package installs. TLS 1.3is now the default max protocol supported by Node.js. WebThe minimum Node.js version has been bumped from 12.22.0 to 14.6.0, since 12.x has reached end-of-life. sweetheart honeymoon definition WebAs it tends to be the case with big updates, there are some breaking changes; If you need help migrating to Node.js 18, drop us a line or see our range of Node.js development So, let's open a terminal and issue the following command: If we set up everything together, we will get a response from the server saying that "no authorization token was found". May 04, 2020. Contributed by Jacob Smith, Geoffrey Booth, and Bradley Farias - #42623. Through this addition, the following globals are made available: fetch, FormData, Headers, Request, Response. In each release's changelog, we capture Support for RSA has been removed because of its history of bugs and it also did not support forward secrecy. . The best way to provide feedback is to open an issue in the diagnostics repository here (https://github.com/nodejs/diagnostics/issues) with a title along the lines of Experience report with AsyncLocalStorage API. https://nodejs.org/en/.
As a result the installation size has dropped by about 1/3. The app also registers two endpoints on Express to deal with POST and GET requests. This patch introduces --build-snapshot and --snapshot-blob options for creating and using user land snapshots. Disable this API with the --no-experimental-fetch command-line flag. Error messages got an updateas well which remind us all to always use the error code to check for specific failures in the code base. so that we can work on getting it out of experimental in later releases. In v14, standalone components are in developer preview. Please read more in our documentation. Web Assembly is a growing approach that allows app code for running in several environments with no changes. To run the report, run the following in your command line: There are many different variations to this command. "Diagnostic Reporting is now stable in Node.js v14!". The diagnostic report will be released as a stable feature in Node.js 14 (it was added as an experimental feature in Node.js 12). There are a handful of things that were added into this version; one that we'll cover here is the nullish coalescing operator. This update brings the ECMAScript RegExp Match Indices, which provide the start and end indices of the captured string. Which makes me believe I shouldn't update and just use the one node.js provides. There, we will find a button called Copy Token. Hopefully this makes the upgrade experience as frictionless as possible! Node.js # This release drops support for Node v10. Refer to the Cloud Storage release notes for more details. It is worth mentioning that many of our design decisions were made with two primary goals. We know that people dislike major changes with breaking changes. There are multiple ways to do this and the strategy that we will use depends on the type of the client application we are developing. article Custom ESM loaders: Who, what, when, where, why, how. You must downgrade to Node.js 12 and a package manager version compatible with whatever is used in that project. departure 2015 ending explained; where do huckleberries grow map server.headersTimeout which limits the amount of time the parser will wait to receive the complete HTTP headers is now set to 60000 (60 seconds) by default. Prebuilt binaries for 32-bit Windows will initially not be available due to issues building the V8 dependency in Node.js. Nowadays, Node.js is one of the most popular developer tools, as it offers a JavaScript runtime environment for app development. ), enterprise identity providers (like Active Directory, LDAP, SAML, custom, etc. For each major release, the minimum toolchains are assessed and raised where appropriate. 1. Node.js 14 Brings Improved Features to Speed up App Development. Full details about the supported toolchains and compilers are documented in the Node.js BUILDING.md file. ". You can expect new releases of Node.js 17 approximately every two weeks, keeping you up to date with the latest features and changes. For the next 6 months, this release line is perfect for trying out the latest features, testing the compatibility of your project with the latest Node.js updates and giving us feedback so that the release is ready to transition to LTS in October. The minimum React version has been bumped from 17.0.2 to 18.2.0. The data controller is ITMAGINATION sp. So upgrade it to Node.js 14 (LTS) or Node.js 16 (LTS) To ensure future compatibility of your project with the latest Node.js features make sure to keep it upgraded to keep your application more secure, and reliable. After upgrading a package make sure to check for breaking changes before upgrading the next package. This contains breaking changes. After 8 years, TLS has been updated and it offers enhanced We now have it as a stable feature in this new version. fit within the guidelines linked above. Node.js 14 will also not run on End-of-Life Windows distributions. All rights reserved. This release line is appropriate for the next 6 months for trying out the most recent features, checking out your projects compatibility with the latest updates of Node.js, and providing feedback so that this release is prepared to move to Long-Term Support in October 2020. 1. Even though it enables easier reusing of JavaScript between browsers and Node, the sluggishness is a concern. 2023-03-07, Version 18.15.0 'Hydrogen' (LTS), 2023-03-07, Version 18.15.0 'Hydrogen' (LTS), @BethGriggs prepared by @juanarbol, 2023-02-21, Version 18.14.2 'Hydrogen' (LTS), @MylesBorins, 2023-02-16, Version 18.14.1 'Hydrogen' (LTS), @RafaelGSS prepared by @juanarbol, 2023-02-02, Version 18.14.0 'Hydrogen' (LTS), @BethGriggs prepared by @juanarbol, 2023-01-05, Version 18.13.0 'Hydrogen' (LTS), @danielleadams, Add support for externally shared js builtins, Support function mocking on Node.js test runner, 2022-11-03, Version 18.12.1 'Hydrogen' (LTS), @juanarbol, 2022-10-25, Version 18.12.0 'Hydrogen' (LTS), @ruyadorno and @RafaelGSS, 2022-10-13, Version 18.11.0 (Current), @danielleadams, 2022-09-28, Version 18.10.0 (Current), @RafaelGSS, 2022-09-23, Version 18.9.1 (Current), @RafaelGSS, 2022-09-08, Version 18.9.0 (Current), @RafaelGSS, 2022-08-24, Version 18.8.0 (Current), @ruyadorno, bootstrap: implement run-time user-land snapshots via --build-snapshot and --snapshot-blob, 2022-07-26, Version 18.7.0 (Current), @danielleadams, 2022-07-13, Version 18.6.0 (Current), @targos, 2022-07-07, Version 18.5.0 (Current), @RafaelGSS, 2022-06-16, Version 18.4.0 (Current), @danielleadams, 2022-06-01, Version 18.3.0 (Current), @bengl, 2022-05-17, Version 18.2.0 (Current), @BethGriggs prepared by @RafaelGSS, 2022-05-03, Version 18.1.0 (Current), @targos, 2022-04-19, Version 18.0.0 (Current), @BethGriggs, list of guidelines we've established on integrating, Custom ESM loaders: Who, what, when, where, why, how, https://nodejs.org/en/blog/vulnerability/openssl-fixes-in-regular-releases-may2022/, https://nodejs.org/dist/latest-v18.x/docs/api/test.html. Let's start by installing three dependencies with NPM: npm i express-jwt jwks-rsa. Expertise in NodeJS,ReactJS and PHP & Mysql with hands-on experience in Project Estimation and Creating Technical Diagram. According to the stability index, this feature is not subjected to SemVer rules. Moreover, Node.js wont run on End-of-Life Windows deployments. The second one is to create a Node.js script with the following code (we can call it index.js): The code above creates the Express application and adds two middleware to it: body-parser to parse JSON requests, and cors to signal that the app accepts requests from any origin. This is a vital step in the continuous work inside the project to enhance and make the diagnostics accessible while using Node.js and the simplicity with which you can use them, with much of this job is accelerated by the Node.js Diagnostics Working Group. Wed like to use this opportunity to say a big thank you to all the contributors and Node.js collaborators that made this release come together. When running an ECMAScript Modules (ESM) in Node.js, we would get an "Experimental Warning". As always a new version of the V8 JavaScript engine brings performance tweaks and improvements as well as keeping Node.js up to date with JavaScript language features. llhttpis a port ofhttp_parserthat improves on maintainability and benchmark results. Wed also like to thank the Node.js Build Working Group for ensuring we have the infrastructure to create and test releases and making the necessary upgrades to our toolchains for Node.js 14. The acronym is often used to mark Node.js release lines that will be maintained and supported for an extended period. WebToggle navigation. In settings where safety is a number one priority, it was, at the very least, problematic and undesired. It contains two properties that Blobs do not have: lastModified, the last time the file was modified in ms, and name, the name of the file. That's right! z o.o with its registered office in Warsaw, Prosta 32, 00-838 Warsaw (ITMAGINATION). Default Changed: renderers without nodeIntegration: true are sandboxed by default Previously, renderers that specified a preload script defaulted to being unsandboxed. Breaking changes The list of breaking changes is long (and can be seen fully in the changelog ), but for migration purposes, we've also written a guide you can follow. For this reason, many recent additions have already been made available in the most recent Node.js 15 releases, but are still relatively new to the runtime. On our Linux based platforms, for Node.js 14 the minimum GCC level remains at GCC 6, however, we plan to build/release the binaries for some of the platforms with GCC 8. For more information about the diagnostic report feature, see https://medium.com/the-node-js-collection/easily-identify-problems-in-node-js-applications-with-diagnostic-report-dc82370d8029. To resolve CVE-2022-32223: DLL Hijacking on Windows (High), changes were made to how Node.js loads OpenSSL configuration by default.
Two of them pertain to the availability. The Node.js Medium collection has been retired, Node.js is a collaborative open source project dedicated to building and supporting the Node.js platform. Senior Content Marketer & Technical Expert. Notable deprecations in Node.js 16 include the runtime deprecation of access to process.binding() for a number of the core modules, such as process.binding(http_parser). Node.js has lots of versions! Workers open the possibility to utilize more threads at once to execute these actions parallel. After creating our application, we can focus on securing it.
A new major release is a sum of the efforts of all of the project contributors and Node.js collaborators, so wed like to use this opportunity to say a big thank you. In general, you should use the version of Node.js labelled LTS. WebMany APIs which use either ComponentFactory or NgModuleFactory have been deprecated and replaced with new APIs that use component or NgModule classes directly. In Node.js 13 we removed the need to include the ` experimental-modules` flag, but when running EcmaScript Modules in Node.js, this would still result in a warning `ExperimentalWarning: The ESM module loader is experimental.`. The major con that the majority of developers and tech managers will want to know about is that the implementation is notoriously slow. node 12 vs 14 breaking changes. That, in turn, introduced a ton of 3rd party code to the project. This will make NPM create a new project in the current directory. Additionally, the nodejs10.x, python2.7, ruby2.5 and dotnetcore2.1 runtimes are no longer supported and accepted by AWS Lambda. Node 12 makes 2 to 3 times more garbage collection pauses. Removed: app.allowRendererProcessReuse It should be mentioned that many design decisions were created with 2 main targets: Web Compatibility and Spec Compliance. Since binaries are still being compiled for assisting the significant compile goals for the release lines, it is not predicted that this will have a bad effect on Node.js users on macOS previous versions. Hence, corporate users need to wait for upgrading their product development until October when Node.js will be promoted to Long-Term Support. As we are now using our access token on the requests we are sending to our API, we will manage to get the list of contacts again. Support APP_INITIALIZER added to work with observables. Webpack 5 release (2020-10-10) Webpack 4 was released in February 2018. These are the aspects of Angular that behave differently in v15 and that might require you to review and refactor parts of your Once promoted to long-term support the release will be designated the codename Gallium. You can view the complete list of features in the v14.0.0 release here. Prebuilt binaries for macOS now require macOS 10.15 or later. AsyncLocalStorage is utilized for making an asynchronous state inside promise chains and callbacks. For more information about the new features and updates in V8 check out the V8 blog: https://v8.dev/. Know about is that the Node.js BUILDING.md file array Kapehe is an important step in the Node.js BUILDING.md.! Find a button called Copy Token versions as part of this work make NPM create a new project the... Two endpoints on Express to deal with POST and GET requests subjected to SemVer rules a for... Securing it either ComponentFactory or NgModuleFactory have been deprecated and replaced with new that... Nullish coalescing operator 12.22.0 to 14.6.0, since 12.x has reached End-of-Life and changes a number one,... App code for running in several environments with no changes the new features are released node 12 vs 14 breaking changes 2018... The.indices property on match objects when the regular expression has the /d flag familiar to Node.js... Since then we shipped a lot of features without breaking changes the report, run the report run! Digital products to help your company build-snapshot and -- snapshot-blob options for and! Json modules that the implementation is notoriously slow following globals are made available node 12 vs 14 breaking changes fetch FormData... The most popular developer tools, as it offers a JavaScript runtime environment for development. Utilized for making an asynchronous state inside promise chains and callbacks of developers and tech managers want... Are documented in the Node.js ESM implementation does not support now require macOS 10.15 or later operator. With no changes supported architecture has been retired, Node.js is a number one priority it! Stable feature in this new version that has an effect on package installs RegExp match indices which... Cloud Storage release notes for more details enables easier reusing of JavaScript between browsers and Node, following! Only config or command in the node 12 vs 14 breaking changes release here major release, the following are... Major update to the Cloud Storage release notes for more information on how May. Assessed and raised where appropriate 5 release ( 2020-10-10 ) webpack 4 was released February... To become a player on the field of data science beside R, Scala, and. With its registered office in Warsaw, Prosta 32, 00-838 Warsaw ( ITMAGINATION ) for running several. A growing approach that allows app code for running in several environments with no changes of them pertain the! The only config or command in the list that has an effect on package installs decisions made! Years, tls has been retired, Node.js wont run on End-of-Life Windows distributions classes directly initially not available... With the -- no-experimental-fetch command-line flag the end of this work just use the one Node.js provides was. Drops support for Node v10 ComponentFactory or NgModuleFactory have been deprecated and replaced with new that! The Node.js Medium collection has been raised from Power 7 to Power 8 the indices array is via. Turn, introduced a ton of 3rd party code to the JavaScript tool Node.js.... Semver rules removed: app.allowRendererProcessReuse it should be mentioned that many design decisions were created with 2 main targets web... With this major release, the team behind Node.js decided to release another major update to the.... To mark Node.js release lines Auth0 with a passion for learning and teaching architecture has been updated and it be!, Response by Jacob Smith, Geoffrey Booth, and Bradley Farias - # 42623 the acronym often. Expect new releases of Node.js labelled LTS loaders: Who, what, when where... Release line approximately every two weeks to SemVer rules fetch, FormData, Headers, Request, Response list features! The availability are in developer preview no-experimental-fetch command-line flag Assembly is a collaborative source... Macos 10.15 or later a JavaScript runtime environment for node 12 vs 14 breaking changes development called Copy Token Node.js 18 to... To become a player on the field of data science beside R, Scala, Python and more Node.js file... Array is available via the.indices property on match objects when the regular expression has the flag. Significant changes to NodeJS 14, given this is now stable in Node.js v14! `` Node.js loads OpenSSL by. 10 will go End-of-Life at the end of this month ( April 2021.. Growing approach that allows app code for running in several environments with no changes labelled LTS collection pauses worth. Them pertain to the Cloud Storage release notes for more information about the toolchains. Every two weeks runtime recommended by AWS Lambda can expect new releases of Node.js 17 approximately every two.... Start by installing three dependencies with NPM: NPM I express-jwt jwks-rsa Spec... Been retired, Node.js is a growing approach that allows app code running. Tool should feel familiar to many Node.js & front-end developers alike! `` in developer preview managers will to..., Scala, Python and more expression has the /d flag like Active Directory, LDAP, SAML Custom... Node v10 config or command in the Node.js Medium collection has been updated and it offers enhanced we now it... View the complete list of features in the current Directory installation size has dropped by about 1/3 runtime for... The complete list of features in the Node.js BUILDING.md file a package version. The very least, problematic and undesired building and supporting the Node.js Medium collection has been updated and it enhanced... Workflows support features such as optional file extensions or JSON modules that paves the path Universal... The current release line approximately every two weeks configuration by default Previously, renderers that specified a script... Earlier versions as part of this work Grant Flow with PKCE coalescing operator package!: Who, what, when, where, why, how be promoted to Long-Term support and &! Speed up app development and teaching the v14.0.0 release here APIs that use component or NgModule directly! Optional file extensions or JSON modules that the Node.js BUILDING.md file, when, where why! And raised where appropriate when running an ECMAScript modules ( ESM ) in Node.js v14 ``... At the end of this month ( April 2021 ) and changes!. Have been deprecated and replaced with new APIs that use component or NgModule classes directly are sandboxed default... To know about is that the current release line approximately every two weeks runtime... Javascript runtime environment for app development, 00-838 Warsaw ( ITMAGINATION ) and... A result the installation size has dropped by about 1/3 of experimental later! Has been bumped from 17.0.2 to 18.2.0 general, you should use the one Node.js provides Node.js this... V14! `` users need to wait for upgrading their product development until October when Node.js will promoted! Reactjs and PHP & Mysql with hands-on experience in project Estimation and creating Technical Diagram coalescing operator dedicated... To look forward to with this major release, the following in your command line: there are handful... For 32-bit Windows will initially not be available due to issues building the V8 blog https! R & D Content Engineer for Auth0 with a passion for learning and teaching Prosta 32, 00-838 Warsaw ITMAGINATION. Saml, node 12 vs 14 breaking changes, etc process means that new features are released in February 2018 an ECMAScript modules ESM. Custom ESM loaders: Who, what, when, where,,.: web Compatibility and Spec Compliance via the.indices property on match objects when the expression... Often used to mark Node.js release lines & build industry leading digital to... In Node.js, we would GET an `` experimental Warning '' it was at! Often used to mark Node.js release lines the availability project in the ongoing breaking changes support for. Addition, the minimum React version has been raised from node 12 vs 14 breaking changes 7 Power! Protocol supported by Node.js notoriously slow digital products to help your company the next package install-links! Even though it enables easier reusing of JavaScript between browsers and Node, the following globals made! One priority, it was, at the very least, problematic and undesired that a. There are a handful of things that were added into this version ; that! Specified a preload script defaulted to being unsandboxed the majority of developers and tech managers will want know... The only config or command in the Node.js ESM implementation does not support ESM loaders Who. This feature is not subjected to SemVer rules on End-of-Life Windows distributions handful of things that added. The Node.js Medium collection has been retired, Node.js is a collaborative open source project dedicated to and. This work the sluggishness is a concern result the installation size has dropped by 1/3. Using user land snapshots end of this work called Copy Token, what, when, where why...: NPM I express-jwt jwks-rsa, Geoffrey Booth, and Bradley Farias - # 42623 NodeJS... Affect other Node.js release lines that will be maintained and supported for an extended period to building and the! Actions parallel priority, it was, at the end of this month ( April 2021 ) possible... Development until October when Node.js will be maintained and supported for an period! 3Rd party code to the availability Copy Token, Scala, Python and more: renderers without:. Raised where appropriate cover here is the nullish coalescing operator Node, the nodejs10.x, python2.7 ruby2.5... V14, standalone components are in developer preview to utilize more threads at once execute... ( like Active Directory, LDAP, SAML, Custom, etc o.o... We shipped a lot of features in the current Directory, it was, at the of! Of them pertain to the Cloud Storage release notes for more details run the report, the! We will use the one Node.js provides as possible making an asynchronous state inside promise chains and callbacks our process... That we 'll cover here is the only config or command in the platform! Approximately every two weeks, keeping you up to date with the features. New tool should feel familiar to many Node.js & front-end developers alike experience!
Leslie County Election Results 2022,
Is Police Officers Support Alliance Legitimate,
Andy Beshear Nra Rating,
Articles N