New to JavaScript — ES2022
Syntax - Tasty Web Development Treats15 Syys 2021

New to JavaScript — ES2022

In this episode of Syntax, Scott and Wes talk about all the new stuff in ES2022 — what it is, why you might need it, and how to use it. Sanity - Sponsor Sanity.io is a real-time headless CMS with a fully customizable Content Studio built in React. Get a Sanity powered site up and running in minutes at sanity.io/create. Get an awesome supercharged free developer plan on sanity.io/syntax. LogRocket - Sponsor LogRocket lets you replay what users do on your site, helping you reproduce bugs and fix issues faster. It’s an exception tracker, a session re-player and a performance monitor. Get 14 days free at logrocket.com/syntax. Auth0 - Sponsor Auth0 is the easiest way for developers to add authentication and secure their applications. They provides features like user management, multi-factor authentication, and you can even enable users to login with device biometrics with something like their fingerprint. Not to mention, Auth0 has SDKs for your favorite frameworks like React, Next.js, and Node/Express. Make sure to sign up for a free account and give Auth0 a try with the link below: https://a0.to/syntax. Show Notes 04:50 - Regex indicies New d flag in a regex https://regex101.com/ This will tell you the indexes (indicies) of the regex matches Handy if you need to highlight or replaces matches in a string We can ask for the start and end positions of each matched capture group 07:16 - Class updates Private fields Properties and Methods to be kept private Prefix them with a # =Helpful for internal state and methods which should not be accessed directly or at all by external In React how we have __INTERNTAL_NEVER USE THIS class ColorButton extends HTMLElement { // All fields are public by default color = "red" // Private fields start with a #, can only be changed from inside the class #clicked = false } const button = new ColorButton() // Public fields can be accessed and changed by anyone button.color = "blue" // SyntaxError here console.log(button.#clicked) // Cannot be read from outside button.#clicked = true // Cannot be assigned a value from outside Getters and setters introduced in es5 https://www.w3schools.com/js/js_object_accessors.asp class Person { #hobbies = ['computers'] get #hobbiesGetter() { return this.#hobbies } #getHobbies() { return this.#hobbies } getHobbiesPublic() { return this.#hobbies } } const scott = new Person(); scott.#getHobbies(); // doesn't work scott.getHobbiesPublic(); // works 09:07 - Class fields This may seem super old because we have been polyfilling it forever Right now if you want an instance field on a class, you need to declare it in the constructor Now we can just declare them inside the class 10:36 - Static fields and methods As above can also be static with the static keyboard Works for methods too Explain what a static method is 13:17 - Top level await So handy in modules. Need to pull in some data? Simple. 15:19 - Ergonomic brand checks for private fields Used for checking if a private field on a class exists using the in keyword 16:00 - .at() method Strings and arrays - we can use square brackets to reference items of the array Super handy for grabbing the last item of an array // 🔥 New .at() method on arrays and strings const toppings = ['pepperoni', 'cheese', 'mushrooms']; // The old way to grab the last item toppings[toppings.length - 1]; // mushrooms // using .at() method with a negative index toppings.at(-1); // mushrooms // works with any index toppings.at(0); // pepperoni toppings.at(-2); // cheese // and with strings! 'Meeting Room: B'.at(-1) // B Why not use array[-1]? We used to use slice(-1) What about indexOf? 21:34 - Handy hasOwn method https://github.com/tc39/proposal-accessible-object-hasownproperty 24:51 - Class static block A static block allows you to run code before creating an optional static property during initialization https://github.com/tc39/proposal-class-static-block Links https://github.com/tc39/proposals/blob/master/finished-proposals.md ××× SIIIIICK ××× PIIIICKS ××× Scott: Ultraloq Smart Lock Wes: Magnatiles Shameless Plugs Scott: Web Components Course - Sign up for the year and save 25%! Wes: All Courses - Use the coupon code ‘Syntax’ for $10 off! Tweet us your tasty treats! Scott’s Instagram LevelUpTutorials Instagram Wes’ Instagram Wes’ Twitter Wes’ Facebook Scott’s Twitter Make sure to include @SyntaxFM in your tweets

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943: Modern React with Ricky Hanlon (React Core Dev)

943: Modern React with Ricky Hanlon (React Core Dev)

Scott and Wes sit down with Ricky Hanlon from the React core team at Facebook to dive into the latest features and APIs shaping modern React development. From transitions and Suspense to fetching strategies and future directions, this episode breaks down what’s next for React and how developers can take advantage of it. Show Notes 00:00 Welcome to Syntax! 01:20 Who is Ricky Hanlon. 02:10 Setting the Stage: Modern React APIs 02:48 Brought to you by Sentry.io. 03:12 Defining Transitions in React 05:08 Practical Examples of Scheduling. 08:23 useDeferredValue. 09:30 Suspense. 11:13 Fallbacks and animations. 12:35 How do you get psychological performance data? 13:39 Are these considerations reasonable for the average dev? 15:37 useOptimistic. 17:35 Removing delayMs (referred to as maxDuration in later iterations). 19:49 How to fetch data in React. 21:58 Is React now just Nextjs? 23:23 Will React give us a Signals-based state management? 24:44 The challenges of building in public. 30:12 Making LLMs cooperate with React. 32:05 The lifting will happen at framework level. 32:59 This is not time slicing. 35:47 Sick Pick + Shameless Plug. Sick Picks Ricky: iPhone 17 Pro Shameless Plugs Ricky: https://conf.react.dev/ Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

6 Loka 202538min

942: Mental Health Q&A w/ Dr. Courtney Tolinski

942: Mental Health Q&A w/ Dr. Courtney Tolinski

Wes and Scott talk with Dr. Courtney Tolinski about supporting neurodivergent teammates, navigating workplace dynamics, and recognizing strengths beyond labels. They explore ADHD diagnosis and treatment, productivity mindsets, burnout, AI in mental health, and practical routines for focus and balance. Show Notes 00:00 Welcome to Syntax! 00:09 Meet Dr. Courtney Tolinski 01:46 Supporting neurodivergent team members 12:26 Should I disclose my ADHD diagnosis at work? 17:21 Characteristics of autism and ADHD 22:37 Seeking diagnosis as an adult developer 28:04 Brought to you by Sentry.io 32:18 Uncoupling identity from productivity 38:06 Is overtime ever “worth it”? 42:34 AI as a mental health tool: hope or hype? 46:32 Will therapists be replaced by AI? 49:29 Burnout warning signs in high-performers 55:15 Sick picks + shameless plugs Sick Picks Courtney: Bentgo Glass Containers Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

1 Loka 202557min

941: Is Responsible AI Possible? with Dr. Sarah Bird of Microsoft

941: Is Responsible AI Possible? with Dr. Sarah Bird of Microsoft

Scott heads to Microsoft’s campus for the VS Code Insider Summit to sit down with Dr. Sarah Bird and explore what “Responsible AI” really means for developers. From protecting user privacy to keeping humans in the loop, they dig into how everyday coders can play a role in shaping AI’s future. Show Notes 00:00 Welcome to Syntax! 01:27 Brought to you by Sentry.io. 03:13 The path the machine learning. 04:44 How do you get to ‘Responsible AI’? 06:43 Is there such a thing as ‘Responsible AI’? 07:34 Does the average developer have a part to play? 09:12 How can AI tools protect inexperienced users? 11:55 Let’s talk about user and company privacy. 13:57 Are local tools and services becoming more viable? 15:06 Are people right to be skeptical? 16:58 The software developer role is fundamentally changing. 17:43 Human in the loop. 19:37 The career path to Responsible AI. 21:21 Sick Picks. Sick Picks Sarah: Japanese pottery Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

29 Syys 202522min

940: Picking a Fullstack Stack, Is Next.js Too Complex? Services vs Self-Hosted + More

940: Picking a Fullstack Stack, Is Next.js Too Complex? Services vs Self-Hosted + More

In this potluck episode, Wes and Scott answer your questions about modern full-stack stacks, Node.js backend options, managing database indexes, developer burnout, handling toxic bosses, and more! Show Notes 00:00 Welcome to Syntax! 02:36 What’s your go-to Node.js backend in 2025? Polka 06:18 Do you proactively manage database indexes—or fix them only when they become a problem? 09:40 Brought to you by Sentry.io 12:14 After planning a new project, what’s your real-world dev workflow? 931: Project Init - How to Make Good Choices When Starting a New Coding Project 18:19 What to do when you’re feeling burned out as a developer 23:34 Picking the right tech stack for your partner’s website 28:18 How do you deal with a toxic boss? 33:10 The ideal tech stack for launching a SaaS MVP 39:46 Is GraphQL still worth it vs REST or RPC? 44:26 Is Vercel steering modern web dev in the wrong direction? 51:20 What’s up with TanStack Forms? TanStack Form Latest 59:35 Sick Picks + Shameless Plugs Sick Picks Scott: Flesh and Code Wes: WAGO connectors Shameless Plugs Syntax YouTube Channel Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

24 Syys 20251h 5min

939: Creator of Vite: Evan You

939: Creator of Vite: Evan You

Scott and Wes sit down with Evan You, creator of Vue, Vite, and VoidZero, to dig into the future of frontend tooling. From the speed of Rolldown to why he chose Rust, they explore the evolution of developer experience, bundlers, and what’s next for the web. Show Notes 00:00 Welcome to Syntax! 00:31 Who is Evan You? Vue.js. Vite. Void0 01:19 Making the shift from UI to Toolchains. 02:37 How aesthetics contributed to the success of Vue and Vite. 05:26 Adding Rollup plugins to the Dev Server. 07:31 Brought to you by Sentry.io. 07:56 Rollup and Rolldown explained. 09:29 NAPIRS. 10:02 Why Rust and not Go? SWC, OXC. 12:04 Rolldown’s speed and performance. OXC Allocator. 15:09 Dealing with massive buildtimes. 17:42 How has the transition been? 20:34 Why do we even need a bundler? 23:25 Vite’s superior developer experience. 26:01 Fullstack Vue? 31:45 Node and Vite’s relationship. 35:41 Wes’ wishlist. vite-dir. 37:28 Hot takes. 37:37 Would Next be better with Vite? 41:09 Thoughts on React Server Components. 43:40 Thought on Remix 3. 46:22 Tell us about Void0. 51:36 Sick Picks + Shameless Plugs. Sick Picks Evan: Laravel Lamborghini Shaped Stress Toys Shameless Plugs Evan: Viteconf, Vite, CultRepo. Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

22 Syys 202554min

938: Hot Takes + Bike Shedding

938: Hot Takes + Bike Shedding

Wes and Scott dive into some hot takes and classic debates—tabs vs spaces, camel vs snake case, export styles, barrel files, variable naming, and more. Show Notes 00:00 Welcome to Syntax! 01:26 CSS variables: descriptive vs. semantic 03:38 snake_case vs. camelCase 04:54 Default exports vs. named exports 06:23 Barrel files vs. direct imports 09:15 Function declaration vs. function expression 11:00 Inferred types vs. explicit types 13:40 Brought to you by Sentry.io 14:40 Long and explicit variable names vs. short with comments 16:27 Self-documenting code vs. code comments 17:03 Rebase vs. merge commit 18:39 Naming event parameters: e vs. event 20:33 Tabs vs. spaces 22:18 Big line height vs. small line height 23:50 Hard line length vs. line wrap Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

17 Syys 202527min

937: Is The Omarchy Hype Real?

937: Is The Omarchy Hype Real?

Scott takes Wes on a tour of Omarchy, DHH’s polished Arch + Hyprland Linux setup that promises speed, beauty, and endless keyboard shortcuts. From first impressions to daily workflows, Scott debates whether it’s good enough to pull him out of the Apple ecosystem for good. Show Notes 00:00 Welcome to Syntax! 02:31 Brought to you by Sentry.io. 02:55 What is Omarchy? 02:57 Arch-based distribution. 03:42 Hyprland window management. 05:08 Wayland Display Server Protocol. 06:27 Installation Defaults. 06:53 System-wide shortcuts. 09:01 My first impressions. 09:41 Connecting to my NAS. 10:54 Gigantic UI. 12:21 Day 2 Experiences. 13:22 Resizing window challenges. 16:11 Neovim and Lazyvim. 16:49 Lazygit. 19:07 How do you use it and why is it good. 19:14 Command Palette. 19:49 Raycast. Recreating Raycast. 20:50 Using the app launcher. 21:25 Screensavers. 21:59 OS Style. 22:55 My apps, my apps, my apps, check it out. 25:07 Is the hardware comparable to Mac’s M processors? 27:24 Installing new apps. 29:26 Web apps as first class citizens. 32:47 What I’ll miss. 35:56 What’s going on with MacOS UI? 38:37 Annoyances. 39:31 My advice. Read the Manual. 44:39 Sick Picks & Shameless Plugs. Sick Picks Scott: Omarchy Manual. Wes: Ugreen 200w Charger, Silicone USB C. Shameless Plugs Scott: Syntax on YouTube. Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

15 Syys 202548min

936: Realtime LED Wall With React + Websockets (I Let Strangers Control It)

936: Realtime LED Wall With React + Websockets (I Let Strangers Control It)

Scott, Wes, and CJ dive into Wes’s Hackweek project: a real-time, web-controlled LED grid. They break down the hardware build, custom 3D-printed diffuser, ESP32 microcontroller, and Cloudflare durable objects powering live pixel art, GitHub activity displays, and interactive web drawings. Show Notes 00:00 Welcome to Syntax! 02:03 Wes’ Hackweek project: a web-controlled LED grid 03:52 The hardware: LED panels, soldering, and power WS2812 LED panels 06:38 ESP32 microcontroller and WLED firmware explained ESP32 Microcontroller 10:57 Power supply challenges and injection fixes 15:05 Debugging and testing a DIY LED matrix 15:56 Shorts, blown circuits, and melted wires 17:58 Designing and 3D-printing the diffuser for crisp pixels 21:29 The software: Cloudflare Durable Objects + Party Server Cloudflare Durable Objects Party.server 22:18 Real-time sync and state management across clients Party Client 28:43 Connecting the server to the LED hardware 41:51 Open access fun: scripts, NSFW images, and moderation Cloudflare tunnel 44:10 Live demos 45:34 Future plans: stats, rooms, and making it always-on Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads Randy: X Instagram YouTube Threads

10 Syys 202547min

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