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1. When you read here, you in fact read dozens of the best Node.js articles - this is a summary and curation of the top-ranked content on Node.js best practices
2. It is the largest compilation, and it is growing every week - currently, more than 50 best practices, style guides, and architectural tips are presented. New issues and PR are created every day to keep this live book updated. We'd love to see you contributing here, whether fixing some code mistake or suggesting brilliant new ideas. See our milestones here
3. Most bullets have additional info - nearby most best practice bullets you'll find 🔗Read More link that will present you with code examples, quotes from selected blogs and more info
- Project structure Practices (5)
- Error Handling Practices (11)
- Code Style Practices (12)
- Testing And Overall Quality Practices (8)
- Going To Production Practices (17)
- Security Practices (coming soon)
- Performance Practices (coming soon)
TL;DR: The worst large applications pitfall is maintaining a huge code base with hundreds of dependencies - such a monolith slows down developers as they try to incorporate new features. Instead, partition your code into components, each gets its own folder or a dedicated codebase, and ensure that each unit is kept small and simple. Visit 'Read More' below to see examples of correct project structure
Otherwise: When developers who code new features struggle to realize the impact of their change and fear to break other dependant components - deployments become slower and more risky. It's also considered harder to scale-out when all the business units are not separated
🔗 Read More: structure by components
TL;DR: Each component should contain 'layers' - a dedicated object for the web, logic and data access code. This not only draws a clean separation of concerns but also significantly eases mocking and testing the system. Though this is a very common pattern, API developers tend to mix layers by passing the web layer objects (Express req, res) to business logic and data layers - this makes your application dependant on and accessible by Express only
Otherwise: App that mixes web objects with other layers can not be accessed by testing code, CRON jobs and other non-Express callers
TL;DR: In a large app that constitutes a large code base, cross-cutting-concern utilities like logger, encryption and alike, should be wrapped by your own code and exposed as private NPM packages. This allows sharing them among multiple code bases and projects
Otherwise: You'll have to invent your own deployment and dependency wheel
🔗 Read More: Structure by feature
TL;DR: Avoid the nasty habit of defining the entire Express app in a single huge file - separate your 'Express' definition to at least two files: the API declaration (app.js) and the networking concerns (WWW). For even better structure, locate your API declaration within components
Otherwise: Your API will be accessible for testing via HTTP calls only (slower and much harder to generate coverage reports). It probably won't be a big pleasure to maintain hundreds of lines of code in a single file
🔗 Read More: separate Express 'app' and 'server'
TL;DR: A perfect and flawless configuration setup should ensure (a) keys can be read from file AND from environment variable (b) secrets are kept outside committed code (c) config is hierarchical for easier findability. There are a few packages that can help tick most of those boxes like rc, nconf and config
Otherwise: Failing to satisfy any of the config requirements will simply bog down the development or devops team. Probably both
🔗 Read More: configuration best practices
TL;DR: Handling async errors in callback style is probably the fastest way to hell (a.k.a the pyramid of doom). The best gift you can give to your code is using a reputable promise library or async-await instead which enables a much more compact and familiar code syntax like try-catch
Otherwise: Node.js callback style, function(err, response), is a promising way to un-maintainable code due to the mix of error handling with casual code, excessive nesting and awkward coding patterns
🔗 Read More: avoiding callbacks
TL;DR: Many throws errors as a string or as some custom type – this complicates the error handling logic and the interoperability between modules. Whether you reject a promise, throw an exception or an emit error – using only the built-in Error object will increase uniformity and prevent loss of information
Otherwise: When invoking some component, being uncertain which type of errors come in return – it makes proper error handling much harder. Even worse, using custom types to describe errors might lead to loss of critical error information like the stack trace!
🔗 Read More: using the built-in error object
TL;DR: Operational errors (e.g. API received an invalid input) refer to known cases where the error impact is fully understood and can be handled thoughtfully. On the other hand, programmer error (e.g. trying to read undefined variable) refers to unknown code failures that dictate to gracefully restart the application
Otherwise: You may always restart the application when an error appears, but why let ~5000 online users down because of a minor, predicted, operational error? the opposite is also not ideal – keeping the application up when an unknown issue (programmer error) occurred might lead to an unpredicted behavior. Differentiating the two allows acting tactfully and applying a balanced approach based on the given context
🔗 Read More: operational vs programmer error
TL;DR: Error handling logic such as mail to admin and logging should be encapsulated in a dedicated and centralized object that all endpoints (e.g. Express middleware, cron jobs, unit-testing) call when an error comes in
Otherwise: Not handling errors within a single place will lead to code duplication and probably to improperly handled errors
🔗 Read More: handling errors in a centralized place
TL;DR: Let your API callers know which errors might come in return so they can handle these thoughtfully without crashing. This is usually done with REST API documentation frameworks like Swagger
Otherwise: An API client might decide to crash and restart only because he received back an error he couldn’t understand. Note: the caller of your API might be you (very typical in a microservice environment)
🔗 Read More: documenting errors in Swagger
TL;DR: When an unknown error occurs (a developer error, see best practice number #3)- there is uncertainty about the application healthiness. A common practice suggests restarting the process carefully using a ‘restarter’ tool like Forever and PM2
Otherwise: When an unfamiliar exception is caught, some object might be in a faulty state (e.g an event emitter which is used globally and not firing events anymore due to some internal failure) and all future requests might fail or behave crazily
🔗 Read More: shutting the process
TL;DR: A set of mature logging tools like Winston, Bunyan or Log4J, will speed-up error discovery and understanding. So forget about console.log
Otherwise: Skimming through console.logs or manually through messy text file without querying tools or a decent log viewer might keep you busy at work until late
🔗 Read More: using a mature logger
TL;DR: Whether professional automated QA or plain manual developer testing – Ensure that your code not only satisfies positive scenario but also handle and return the right errors. Testing frameworks like Mocha & Chai can handle this easily (see code examples within the "Gist popup")
Otherwise: Without testing, whether automatically or manually, you can’t rely on our code to return the right errors. Without meaningful errors – there’s no error handling
🔗 Read More: testing error flows
TL;DR: Monitoring and performance products (a.k.a APM) proactively gauge your codebase or API so they can automagically highlight errors, crashes and slow parts that you were missing
Otherwise: You might spend great effort on measuring API performance and downtimes, probably you’ll never be aware which are your slowest code parts under real-world scenario and how these affect the UX
🔗 Read More: using APM products
TL;DR: Any exception thrown within a promise will get swallowed and discarded unless a developer didn’t forget to explicitly handle. Even if your code is subscribed to process.uncaughtException! Overcome this by registering to the event process.unhandledRejection
Otherwise: Your errors will get swallowed and leave no trace. Nothing to worry about
🔗 Read More: catching unhandled promise rejection
TL;DR: This should be part of your Express best practices – Assert API input to avoid nasty bugs that are much harder to track later. The validation code is usually tedious unless you are using a very cool helper library like Joi
Otherwise: Consider this – your function expects a numeric argument “Discount” which the caller forgets to pass, later on, your code checks if Discount!=0 (amount of allowed discount is greater than zero), then it will allow the user to enjoy a discount. OMG, what a nasty bug. Can you see it?
TL;DR: ESLint is the de-facto standard for checking possible code errors and fixing code style, not only to identify nitty-gritty spacing issues but also to detect serious code anti-patterns like developers throwing errors without classification. Though ESLint can automatically fix code styles, other tools like prettier and beautify are more powerful in formatting the fix and work in conjunction with ESLint
Otherwise: Developers will focus on tedious spacing and line-width concerns and time might be wasted overthinking about the project's code style
TL;DR: On top of ESLint standard rules that cover vanilla JS only, add Node-specific plugins like eslint-plugin-node, eslint-plugin-mocha and eslint-plugin-node-security
Otherwise: Many faulty Node.js code patterns might escape under the radar. For example, developers might require(variableAsPath) files with a variable given as path which allows attackers to execute any JS script. Node.js linters can detect such patterns and complain early
TL;DR: The opening curly braces of a code block should be in the same line of the opening statement
// Do
function someFunction() {
// code block
}
// Avoid
function someFunction()
{
// code block
}Otherwise: Deferring from this best practice might lead to unexpected results, as seen in the StackOverflow thread below:
🔗 Read more: "Why does a results vary based on curly brace placement?" (Stackoverflow)
TL;DR: While not unanimously agreed upon, it is still recommended to put a semicolon at the end of each statement. This will make your code more readable and explicit to other developers who read it
Otherwise: As seen in the previous section, JavaScript's interpreter automatically adds a semicolon at the end of a statement if there isn't one which might lead to some undesired results
TL;DR: Name all functions, including closures and callbacks. Avoid anonymous functions. This is especially useful when profiling a node app. Naming all functions will allow you to easily understand what you're looking at when checking a memory snapshot
Otherwise: Debugging production issues using a core dump (memory snapshot) might become challenging as you notice significant memory consumption from anonymous functions
TL;DR: Use lowerCamelCase when naming constants, variables and functions and UpperCamelCase (capital first letter as well) when naming classes. This will help you to easily distinguish between plain variables/functions, and classes that require instantiation. Use descriptive names, but try to keep them short
Otherwise: Javascript is the only language in the world which allows invoking a constructor ("Class") directly without instantiating it first. Consequently, Classes and function-constructors are differentiated by starting with UpperCamelCase
// for class name we use UpperCamelCase
class SomeClassExample {}
// for const names we use the const keyword and lowerCamelCase
const config = {
key: 'value'
};
// for variables and functions names we use lowerCamelCase
let someVariableExample = 'value';
function doSomething() {}TL;DR: Using const means that once a variable is assigned, it cannot be reassigned. Preferring const will help you to not be tempted to use the same variable for different uses, and make your code clearer. If a variable needs to be reassigned, in a for loop, for example, use let to declare it. Another important aspect of let is that a variable declared using it is only available in the block scope in which it was defined. var is function scoped, not block scoped, and shouldn't be used in ES6 now that you have const and let at your disposal
Otherwise: Debugging becomes way more cumbersome when following a variable that frequently changes
🔗 Read more: JavaScript ES6+: var, let, or const?
TL;DR: Require modules at the beginning of each file, before and outside of any functions. This simple best practice will not only help you easily and quickly tell the dependencies of a file right at the top but also avoids a couple of potential problems
Otherwise: Requires are run synchronously by Node.js. If they are called from within a function, it may block other requests from being handled at a more critical time. Also, if a required module or any of its own dependencies throw an error and crash the server, it is best to find out about it as soon as possible, which might not be the case if that module is required from within a function
TL;DR: When developing a module/library in a folder, place an index.js file that exposes the module's internals so every consumer will pass through it. This serves as an 'interface' to your module and eases future changes without breaking the contract
Otherwise: Changing the internal structure of files or the signature may break the interface with clients
// Do
module.exports.SMSProvider = require('./SMSProvider');
module.exports.SMSNumberResolver = require('./SMSNumberResolver');
// Avoid
module.exports.SMSProvider = require('./SMSProvider/SMSProvider.js');
module.exports.SMSNumberResolver = require('./SMSNumberResolver/SMSNumberResolver.js');TL;DR: Prefer the strict equality operator === over the weaker abstract equality operator ==. == will compare two variables after converting them to a common type. There is no type conversion in ===, and both variables must be of the same type to be equal
Otherwise: Unequal variables might return true when compared with the == operator
'' == '0' // false
0 == '' // true
0 == '0' // true
false == 'false' // false
false == '0' // true
false == undefined // false
false == null // false
null == undefined // true
' \t\r\n ' == 0 // trueAll statements above will return false if used with ===
TL;DR: Node 8 LTS now has full support for Async-await. This is a new way of dealing with asynchronous code which supersedes callbacks and promises. Async-await is non-blocking, and it makes asynchronous code look synchronous. The best gift you can give to your code is using async-await which provides a much more compact and familiar code syntax like try-catch
Otherwise: Handling async errors in callback style is probably the fastest way to hell - this style forces to check errors all over, deal with awkward code nesting and make it difficult to reason about the code flow
🔗Read more: Guide to async await 1.0
TL;DR: Though it's recommended to use async-await and avoid function parameters when dealing with older API that accept promises or callbacks - arrow functions make the code structure more compact and keep the lexical context of the root function (i.e. 'this')
Otherwise: Longer code (in ES5 functions) is more prone to bugs and cumbersome to read
🔗 Read mode: It’s Time to Embrace Arrow Functions
TL;DR: Most projects just don't have any automated testing due to short timetables or often the 'testing project' run out of control and being abandoned. For that reason, prioritize and start with API testing which is the easiest to write and provide more coverage than unit testing (you may even craft API tests without code using tools like Postman. Afterward, should you have more resources and time, continue with advanced test types like unit testing, DB testing, performance testing, etc
Otherwise: You may spend long days on writing unit tests to find out that you got only 20% system coverage
TL;DR: Use a code linter to check basic quality and detect anti-patterns early. Run it before any test and add it as a pre-commit git-hook to minimize the time needed to review and correct any issue. Also check Section 3 on Code Style Practices
Otherwise: You may let pass some anti-pattern and possible vulnerable code to your production environment.
TL;DR: Your continuous integration platform (CICD) will host all the quality tools (e.g test, lint) so it should come with a vibrant ecosystem of plugins. Jenkins used to be the default for many projects as it has the biggest community along with a very powerful platform at the price of complex setup that demands a steep learning curve. Nowadays, it became much easier to set up a CI solution using SaaS tools like CircleCI and others. These tools allow crafting a flexible CI pipeline without the burden of managing the whole infrastructure. Eventually, it's a trade-off between robustness and speed - choose your side carefully
Otherwise: Choosing some niche vendor might get you blocked once you need some advanced customization. On the other hand, going with Jenkins might burn precious time on infrastructure setup
🔗 Read More: Choosing CI platform
TL;DR: Even the most reputable dependencies such as Express have known vulnerabilities. This can get easily tamed using community and commercial tools such as 🔗 nsp that can be invoked from your CI on every build
Otherwise: Keeping your code clean from vulnerabilities without dedicated tools will require to constantly follow online publications about new threats. Quite tedious
TL;DR: Different tests must run on different scenarios: quick smoke, IO-less, tests should run when a developer saves or commits a file, full end-to-end tests usually run when a new pull request is submitted, etc. This can be achieved by tagging tests with keywords like #cold #api #sanity so you can grep with your testing harness and invoke the desired subset. For example, this is how you would invoke only the sanity test group with Mocha: mocha --grep 'sanity'
Otherwise: Running all the tests, including tests that perform dozens of DB queries, any time a developer makes a small change can be extremely slow and keeps developers away from running tests
TL;DR: Code coverage tools like Istanbul/NYC are great for 3 reasons: it comes for free (no effort is required to benefit this reports), it helps to identify a decrease in testing coverage, and last but not least it highlights testing mismatches: by looking at colored code coverage reports you may notice, for example, code areas that are never tested like catch clauses (meaning that tests only invoke the happy paths and not how the app behaves on errors). Set it to fail builds if the coverage falls under a certain threshold
Otherwise: There won't be any automated metric telling you when a large portion of your code is not covered by testing
TL;DR: Use your preferred tool (e.g. 'npm outdated' or npm-check-updates to detect installed packages which are outdated, inject this check into your CI pipeline and even make a build fail in a severe scenario. For example, a severe scenario might be when an installed package is 5 patch commits behind (e.g. local version is 1.3.1 and repository version is 1.3.8) or it is tagged as deprecated by its author - kill the build and prevent deploying this version
Otherwise: Your production will run packages that have been explicitly tagged by their author as risky
TL;DR: End to end (e2e) testing which includes live data used to be the weakest link of the CI process as it depends on multiple heavy services like DB. Docker-compose turns this problem into a breeze by crafting production-like environment using a simple text file and easy commands. It allows crafting all the dependent services, DB and isolated network for e2e testing. Last but not least, it can keep a stateless environment that is invoked before each test suite and dies right after
Otherwise: Without docker-compose teams must maintain a testing DB for each testing environment including developers machines, keep all those DBs in sync so test results won't vary across environments
TL;DR: Monitoring is a game of finding out issues before customers do – obviously this should be assigned unprecedented importance. The market is overwhelmed with offers thus consider starting with defining the basic metrics you must follow (my suggestions inside), then go over additional fancy features and choose the solution that ticks all boxes. Click ‘The Gist’ below for an overview of the solutions
Otherwise: Failure === disappointed customers. Simple
TL;DR: Logs can be a dumb warehouse of debug statements or the enabler of a beautiful dashboard that tells the story of your app. Plan your logging platform from day 1: how logs are collected, stored and analyzed to ensure that the desired information (e.g. error rate, following an entire transaction through services and servers, etc) can really be extracted
Otherwise: You end-up with a black box that is hard to reason about, then you start re-writing all logging statements to add additional information
🔗 Read More: Increase transparency using smart logging
TL;DR: Node is awfully bad at doing CPU intensive tasks like gzipping, SSL termination, etc. You should use ‘real’ middleware services like nginx, HAproxy or cloud vendor services instead
Otherwise: Your poor single thread will stay busy doing infrastructural tasks instead of dealing with your application core and performance will degrade accordingly
🔗 Read More: Delegate anything possible (e.g. gzip, SSL) to a reverse proxy
TL;DR: Your code must be identical across all environments, but amazingly NPM lets dependencies drift across environments by default – when you install packages at various environments it tries to fetch packages’ latest patch version. Overcome this by using NPM config files, .npmrc, that tell each environment to save the exact (not the latest) version of each package. Alternatively, for finer grain control use NPM” shrinkwrap”. *Update: as of NPM5, dependencies are locked by default. The new package manager in town, Yarn, also got us covered by default
Otherwise: QA will thoroughly test the code and approve a version that will behave differently at production. Even worse, different servers at the same production cluster might run different code
🔗 Read More: Lock dependencies
TL;DR: The process must go on and get restarted upon failures. For simple scenarios, ‘restarter’ tools like PM2 might be enough but in today ‘dockerized’ world – a cluster management tools should be considered as well
Otherwise: Running dozens of instances without a clear strategy and too many tools together (cluster management, docker, PM2) might lead to a DevOps chaos
🔗 Read More: Guard process uptime using the right tool
TL;DR: At its basic form, a Node app runs on a single CPU core while all other are left idling. It’s your duty to replicate the Node process and utilize all CPUs – For small-medium apps you may use Node Cluster or PM2. For a larger app consider replicating the process using some Docker cluster (e.g. K8S, ECS) or deployment scripts that are based on Linux init system (e.g. systemd)
Otherwise: Your app will likely utilize only 25% of its available resources(!) or even less. Note that a typical server has 4 CPU cores or more, naive deployment of Node.js utilizes only 1 (even using PaaS services like AWS beanstalk!)
🔗 Read More: Utilize all CPU cores
TL;DR: Expose a set of system-related information, like memory usage and REPL, etc in a secured API. Although it’s highly recommended to rely on standard and battle-tests tools, some valuable information and operations are easier done using code
Otherwise: You’ll find that you’re performing many “diagnostic deploys” – shipping code to production only to extract some information for diagnostic purposes
🔗 Read More: Create a ‘maintenance endpoint’
TL;DR: Monitoring and performance products (a.k.a APM) proactively gauge codebase and API so they can auto-magically go beyond traditional monitoring and measure the overall user-experience across services and tiers. For example, some APM products can highlight a transaction that loads too slow on the end-users side while suggesting the root cause
Otherwise: You might spend great effort on measuring API performance and downtimes, probably you’ll never be aware which is your slowest code parts under real-world scenario and how these affects the UX
🔗 Read More: Discover errors and downtime using APM products
TL;DR: Code with the end in mind, plan for production from day 1. This sounds a bit vague so I’ve compiled a few development tips that are closely related to production maintenance (click Gist below)
Otherwise: A world champion IT/DevOps guy won’t save a system that is badly written
🔗 Read More: Make your code production-ready
TL;DR: Node.js has controversial relationships with memory: the v8 engine has soft limits on memory usage (1.4GB) and there are known paths to leaks memory in Node’s code – thus watching Node’s process memory is a must. In small apps, you may gauge memory periodically using shell commands but in medium-large app consider baking your memory watch into a robust monitoring system
Otherwise: Your process memory might leak a hundred megabytes a day like how it happened at Walmart
🔗 Read More: Measure and guard the memory usage
TL;DR: Serve frontend content using dedicated middleware (nginx, S3, CDN) because Node performance really gets hurt when dealing with many static files due to its single threaded model
Otherwise: Your single Node thread will be busy streaming hundreds of html/images/angular/react files instead of allocating all its resources for the task it was born for – serving dynamic content
🔗 Read More: Get your frontend assets out of Node
TL;DR: Store any type of data (e.g. users session, cache, uploaded files) within external data stores. Consider ‘killing’ your servers periodically or use ‘serverless’ platform (e.g. AWS Lambda) that explicitly enforces a stateless behavior
Otherwise: Failure at a given server will result in application downtime instead of just killing a faulty machine. Moreover, scaling-out elasticity will get more challenging due to the reliance on a specific server
🔗 Read More: Be stateless, kill your Servers almost every day
TL;DR: Even the most reputable dependencies such as Express have known vulnerabilities (from time to time) that can put a system at risk. This can get easily tamed using community and commercial tools that constantly check for vulnerabilities and warn (locally or at GitHub), some can even patch them immediately
Otherwise: Otherwise: Keeping your code clean from vulnerabilities without dedicated tools will require to constantly follow online publications about new threats. Quite tedious
🔗 Read More: Use tools that automatically detect vulnerabilities
TL;DR: Assign the same identifier, transaction-id: {some value}, to each log entry within a single request. Then when inspecting errors in logs, easily conclude what happened before and after. Unfortunately, this is not easy to achieve in Node due to its async nature, see code examples inside
Otherwise: Looking at a production error log without the context – what happened before – makes it much harder and slower to reason about the issue
🔗 Read More: Assign ‘TransactionId’ to each log statement
TL;DR: Set the environment variable NODE_ENV to ‘production’ or ‘development’ to flag whether production optimizations should get activated – many NPM packages determining the current environment and optimize their code for production
Otherwise: Omitting this simple property might greatly degrade performance. For example, when using Express for server-side rendering omitting NODE_ENV makes the slower by a factor of three!
🔗 Read More: Set NODE_ENV=production
TL;DR: Researches show that teams who perform many deployments – lowers the probability of severe production issues. Fast and automated deployments that don’t require risky manual steps and service downtime significantly improves the deployment process. You should probably achieve that using Docker combined with CI tools as they became the industry standard for streamlined deployment
Otherwise: Long deployments -> production down time & human-related error -> team unconfident and in making deployment -> less deployments and features
TL;DR: Ensure you are using an LTS version of Node.js to receive critical bug fixes, security updates and performance improvements
Otherwise: Newly discovered bugs or vulnerabilities could be used to exploit an application running in production, and your application may become unsupported by various modules and harder to maintain
🔗 Read More: Use an LTS release of Node.js
To maintain this guide and keep it up to date, we are constantly updating and improving the guidelines and best practices with the help of the community. You can follow our milestones and join the working groups if you want to contribute to this project
All translations are contributed by the community. We will be happy to get any help with either completed, ongoing or new translations!
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Independent Node.js consultant who works with customers in USA, Europe, and Israel on building large-scale scalable Node applications. Many of the best practices above were first published in his blog post at http://www.goldbergyoni.com. Reach Yoni at @goldbergyoni or [email protected]
👨💻 Software engineer, 🌐 web developer, 🤖 emojis enthusiast
Refael Ackermann @refack <[email protected]> (he/him)
Node.js Core Collaborator, been noding since 0.4, and have noded in multiple production sites. Founded node4good home of lodash-contrib, formage, and asynctrace.
refack on freenode, Twitter, GitHub, GMail, and many other platforms. DMs are open, happy to help
💻 full-stack web developer and Node.js enthusiast
This repository is being kept up to date thanks to the help from the community. We appreciate any contribution, from a single word fix to a new best practice. Below is a list of everyone who contributed to this project. A 🌻 marks a successful pull request and a ⭐ marks an approved new best practice
🌻 Kevin Rambaud, 🌻 Michael Fine, 🌻 Shreya Dahal, 🌻 ChangJoo Park, 🌻 Matheus Cruz Rocha, 🌻 Yog Mehta, 🌻 Kudakwashe Paradzayi, 🌻 t1st3, 🌻 mulijordan1976, 🌻 Matan Kushner, 🌻 Fabio Hiroki, 🌻 James Sumners, 🌻 Chandan Rai, 🌻 Dan Gamble, 🌻 PJ Trainor, 🌻 Remek Ambroziak, 🌻 Yoni Jah, 🌻 Misha Khokhlov, 🌻 Evgeny Orekhov, 🌻 Gediminas Petrikas, 🌻 Isaac Halvorson, 🌻 Vedran Karačić, 🌻 lallenlowe, 🌻 Nathan Wells, 🌻 Paulo Vítor S Reis, 🌻 syzer, 🌻 David Sancho, 🌻 Robert Manolea, 🌻 Xavier Ho, 🌻 Aaron Arney, 🌻 Jan Charles Maghirang Adona, 🌻 Allen Fang, 🌻 Leonardo Villela, 🌻 Michal Zalecki 🌻 Chris Nicola, 🌻 Alejandro Corredor, 🌻 Ye Min Htut, 🌻 cwar, 🌻 Yuwei, 🌻 Utkarsh Bhatt