{"id":4782,"date":"2026-05-07T22:28:28","date_gmt":"2026-05-07T16:58:28","guid":{"rendered":"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/"},"modified":"2026-05-07T22:28:28","modified_gmt":"2026-05-07T16:58:28","slug":"javascript-best-practices-write-cleaner-faster-code-2","status":"publish","type":"post","link":"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/","title":{"rendered":"JavaScript Best Practices: Write Cleaner, Faster Code"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a03a8e29c89f\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a03a8e29c89f\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#JavaScript_Best_Practices_Why_Your_%E2%80%9CClean_Code%E2%80%9D_is_Crashing_My_Production_Nodes\" >JavaScript Best Practices: Why Your &#8220;Clean Code&#8221; is Crashing My Production Nodes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#The_AsyncAwait_Trap_Parallelism_vs_Concurrency\" >The Async\/Await Trap: Parallelism vs. Concurrency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#Memory_Leaks_Closures_and_the_V8_Heap\" >Memory Leaks: Closures and the V8 Heap<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#Error_Handling_%E2%80%9CTryCatch%E2%80%9D_is_Not_a_Strategy\" >Error Handling: &#8220;Try\/Catch&#8221; is Not a Strategy<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#The_%E2%80%9Cnode_modules%E2%80%9D_Liability\" >The &#8220;node_modules&#8221; Liability<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#TypeScript_%E2%80%9CAny%E2%80%9D_is_a_Production_Incident\" >TypeScript: &#8220;Any&#8221; is a Production Incident<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#The_Event_Loop_Dont_Block_the_Heartbeat\" >The Event Loop: Don&#8217;t Block the Heartbeat<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#The_%E2%80%9CReal_World%E2%80%9D_Gotcha_The_Buffer_Heap\" >The &#8220;Real World&#8221; Gotcha: The Buffer Heap<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#Performance_Hidden_Classes_and_Deoptimizations\" >Performance: Hidden Classes and Deoptimizations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#The_Wrap-up\" >The Wrap-up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/#Related_Articles\" >Related Articles<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"JavaScript_Best_Practices_Why_Your_%E2%80%9CClean_Code%E2%80%9D_is_Crashing_My_Production_Nodes\"><\/span>JavaScript Best Practices: Why Your &#8220;Clean Code&#8221; is Crashing My Production Nodes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>It was 3:14 AM on a Tuesday in 2019. I was on-call for a payment processing gateway. Our Node.js worker fleet started dropping like flies. The error? <code>ERR_S3_UPLOAD_FAILED<\/code> followed immediately by an <code>OOM-killed<\/code> signal from the Kubelet. I spent four hours digging through heap dumps only to realize a &#8220;senior&#8221; dev had implemented a &#8220;clean&#8221; logging middleware. It captured the entire request buffer in a closure to &#8220;ensure we had context&#8221; if an upload failed. Under high load, those closures stayed in the heap, the garbage collector (GC) panicked, and the event loop lagged so hard the health checks failed. We lost $40k in processed volume because someone wanted &#8220;pretty&#8221; logs.<\/p>\n<p>That is the reality of JavaScript. It is a language that makes it incredibly easy to shoot yourself in the foot while feeling like you\u2019re doing everything right. Most &#8220;javascript best&#8221; guides focus on where to put your curly braces or why you should use <code>const<\/code> over <code>let<\/code>. I don\u2019t care about your linter settings. I care about why your <code>Promise.all<\/code> is DDOSing your own database and why your <code>Map<\/code> is leaking memory like a sieve. This isn&#8217;t a guide for beginners; it\u2019s a survival manual for people running JS in production.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_AsyncAwait_Trap_Parallelism_vs_Concurrency\"><\/span>The Async\/Await Trap: Parallelism vs. Concurrency<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The biggest lie we tell juniors is that <code>async\/await<\/code> makes asynchronous code &#8220;look synchronous.&#8221; It doesn&#8217;t. It just hides the complexity until it explodes in your face. Most developers use <code>Promise.all()<\/code> because they heard it\u2019s faster. It is. It\u2019s also a great way to exhaust your connection pool to <code>api.stripe.com<\/code> or your Postgres instance.<\/p>\n<pre><code>\/\/ The \"Clean Code\" way that kills your DB\nconst processOrders = async (orders) => {\n  await Promise.all(orders.map(async (order) => {\n    const details = await db.query('SELECT * FROM orders WHERE id = $1', [order.id]);\n    await shipOrder(details);\n  }));\n};\n<\/code><\/pre>\n<p>If <code>orders<\/code> has 1,000 items, you just fired 1,000 concurrent database queries. Your <code>pg<\/code> pool size is likely 10. You now have 990 promises sitting in the microtask queue, timing out, and consuming memory. In a real production environment, you need controlled concurrency. Use a library like <code>p-limit<\/code> or a simple batching pattern.<\/p>\n<ul>\n<li><strong>Batching:<\/strong> Process items in chunks of 10 or 20.<\/li>\n<li><strong>Timeouts:<\/strong> Never, ever use <code>fetch<\/code> or a DB driver without a <code>signal<\/code> from an <code>AbortController<\/code>.<\/li>\n<\/ul>\n<blockquote>\n<p><strong>Pro-tip:<\/strong> If you don&#8217;t set a <code>timeout<\/code> on your network requests, you are effectively giving your dependencies permission to hang your entire process indefinitely.<\/p>\n<\/blockquote>\n<pre><code>\/\/ The SRE-approved way\nimport pLimit from 'p-limit';\n\nconst limit = pLimit(10); \/\/ Only 10 concurrent operations\nconst controller = new AbortController();\nconst timeoutId = setTimeout(() => controller.abort(), 5000);\n\ntry {\n  const tasks = orders.map(order => limit(() => \n    fetch(`https:\/\/api.stripe.com\/v1\/charges\/${order.id}`, { signal: controller.signal })\n  ));\n  const results = await Promise.all(tasks);\n} finally {\n  clearTimeout(timeoutId);\n}\n<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Memory_Leaks_Closures_and_the_V8_Heap\"><\/span>Memory Leaks: Closures and the V8 Heap<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>JavaScript is garbage-collected, which gives developers a false sense of security. I\u2019ve seen 32GB RAM nodes crash because of a 50-line script. The most common culprit? Closures that capture large objects in the outer scope. When you define a function inside another function, it keeps a reference to the variables in its parent scope. If that inner function is stored (e.g., in an event listener or a <code>setInterval<\/code>), the parent scope&#8217;s variables can&#8217;t be GC&#8217;d.<\/p>\n<p>Consider this disaster I found in a production telemetry service:<\/p>\n<pre><code>function monitorService() {\n  const largeMetadata = new Array(1000000).fill('some-heavy-string');\n\n  return function logStatus() {\n    \/\/ This function doesn't even use largeMetadata!\n    \/\/ But because it's in the same scope, largeMetadata is leaked.\n    console.log(\"Service is up\");\n  };\n}\n\nconst statusLogger = monitorService();\nsetInterval(statusLogger, 1000);\n<\/code><\/pre>\n<p>V8 is smart, but it\u2019s not a psychic. In many cases, it will retain <code>largeMetadata<\/code> because <code>statusLogger<\/code> is still reachable. To fix this, you have to be explicit. Nullify references you no longer need. Use <code>WeakMap<\/code> or <code>WeakSet<\/code> if you need to associate data with objects without preventing their collection.<\/p>\n<p><strong>The Hidden Cost of Objects:<\/strong><br \/>\nAn empty object in V8 isn&#8217;t &#8220;free.&#8221; It carries overhead for its hidden class and properties. If you\u2019re storing millions of small objects (like coordinates or timestamps), use <code>TypedArrays<\/code> (e.g., <code>Float64Array<\/code>). It\u2019s the difference between a 500MB heap and a 50MB heap.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Error_Handling_%E2%80%9CTryCatch%E2%80%9D_is_Not_a_Strategy\"><\/span>Error Handling: &#8220;Try\/Catch&#8221; is Not a Strategy<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If I see one more <code>catch (e) { console.error(e); }<\/code> in a pull request, I\u2019m going to lose it. Swallowing errors is the fastest way to create a &#8220;Heisenbug&#8221; that only appears in production and leaves no trace in the logs. In a distributed system, an error without context is useless.<\/p>\n<p>JavaScript now supports the <code>cause<\/code> property in the <code>Error<\/code> constructor. Use it. It allows you to wrap low-level errors (like a TCP timeout) in high-level business logic (like &#8220;Failed to process checkout&#8221;) without losing the original stack trace.<\/p>\n<pre><code>async function getStripeCustomer(customerId) {\n  try {\n    return await stripe.customers.retrieve(customerId);\n  } catch (err) {\n    throw new Error(`Failed to fetch customer ${customerId} from Stripe`, { cause: err });\n  }\n}\n<\/code><\/pre>\n<p>When this fails, your logs will show the full chain. You\u2019ll see exactly which customer failed and the underlying 401 or 500 error from Stripe. Without <code>cause<\/code>, you just get &#8220;Error: Failed to fetch customer,&#8221; and you&#8217;re stuck grepping logs for an hour.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_%E2%80%9Cnode_modules%E2%80%9D_Liability\"><\/span>The &#8220;node_modules&#8221; Liability<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We need to talk about the <code>npm install<\/code> addiction. Every dependency you add is a liability. It\u2019s a security risk (remember <code>left-pad<\/code> or <code>event-stream<\/code>?), a performance hit, and a maintenance nightmare. I\u2019ve seen projects where <code>node_modules<\/code> was 1.2GB for a simple CRUD API. That\u2019s 1.2GB of code that needs to be parsed by the runtime on every cold start.<\/p>\n<p><strong>The SRE Audit:<\/strong><br \/>\n1. <strong>Do you need Lodash?<\/strong> No. Modern JS has <code>Array.map<\/code>, <code>filter<\/code>, <code>reduce<\/code>, <code>flat<\/code>, and <code>Object.fromEntries<\/code>. If you only need <code>cloneDeep<\/code>, write a utility or use <code>structuredClone()<\/code>.<br \/>\n2. <strong>Do you need Moment.js?<\/strong> Absolutely not. It\u2019s a bloated, mutable mess. Use <code>date-fns<\/code> or the native <code>Intl<\/code> object.<br \/>\n3. <strong>Check for duplicates:<\/strong> Use <code>npm dedupe<\/code>. I once found three different versions of <code>request<\/code> (which is deprecated!) in a single dependency tree.<\/p>\n<blockquote>\n<p><strong>Note to self:<\/strong> Always run <code>npm audit<\/code> in the CI\/CD pipeline. But don&#8217;t trust it blindly. It misses a lot of &#8220;malicious but technically valid&#8221; code changes.<\/p>\n<\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"TypeScript_%E2%80%9CAny%E2%80%9D_is_a_Production_Incident\"><\/span>TypeScript: &#8220;Any&#8221; is a Production Incident<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>TypeScript is not about making the code look pretty; it\u2019s about creating a contract. When you use <code>any<\/code>, you are breaking that contract and lying to your future self. I\u2019ve seen <code>any<\/code> cause production outages where a function expected a <code>string<\/code> but got <code>null<\/code>, leading to a <code>TypeError: Cannot read property 'split' of null<\/code> at 4 PM on a Friday.<\/p>\n<p>If you don&#8217;t know the type, use <code>unknown<\/code>. It forces you to perform type checking before you do anything dangerous with the variable.<\/p>\n<pre><code>\/\/ Dangerous\nfunction processData(input: any) {\n  console.log(input.name.toUpperCase()); \/\/ Boom if input is null\n}\n\n\/\/ Safe\nfunction processData(input: unknown) {\n  if (input && typeof input === 'object' && 'name' in input && typeof input.name === 'string') {\n    console.log(input.name.toUpperCase());\n  }\n}\n<\/code><\/pre>\n<p>Yes, it&#8217;s more verbose. That\u2019s the point. It forces you to handle the &#8220;edge cases&#8221; that are actually just &#8220;reality.&#8221;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Event_Loop_Dont_Block_the_Heartbeat\"><\/span>The Event Loop: Don&#8217;t Block the Heartbeat<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>JavaScript is single-threaded. If you block the event loop, you block everything. I once saw a dev run <code>JSON.parse()<\/code> on a 50MB string inside an Express route. Every time that route was hit, the entire server stopped responding to <em>all other requests<\/em> for 200ms. Under load, the health check failed, the load balancer pulled the node, and the remaining nodes took the extra traffic, hit the same route, and died. A classic cascading failure.<\/p>\n<ul>\n<li><strong>Synchronous APIs:<\/strong> Avoid <code>fs.readFileSync<\/code> or <code>JSON.parse<\/code> on large blobs in the hot path.<\/li>\n<li><strong>CPU Intensive Tasks:<\/strong> If you need to calculate a hash or process an image, offload it to a <code>Worker Thread<\/code>.<\/li>\n<li><strong>SetImmediate vs NextTick:<\/strong> Use <code>setImmediate<\/code> to break up long-running loops. <code>process.nextTick<\/code> fires before the event loop continues, so if you use it recursively, you will starve the I\/O.<\/li>\n<\/ul>\n<pre><code>\/\/ How to kill your server\nfunction heavyTask() {\n  for (let i = 0; i < 1000000000; i++) {\n    \/\/ Blocking the loop for seconds\n  }\n}\n\n\/\/ How to be a good citizen\nfunction heavyTask(iteration = 0) {\n  if (iteration >= 1000) return;\n\n  \/\/ Do a chunk of work\n  doWork();\n\n  \/\/ Yield back to the event loop so it can handle I\/O\n  setImmediate(() => heavyTask(iteration + 1));\n}\n<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"The_%E2%80%9CReal_World%E2%80%9D_Gotcha_The_Buffer_Heap\"><\/span>The &#8220;Real World&#8221; Gotcha: The <code>Buffer<\/code> Heap<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In Node.js, <code>Buffer<\/code> objects are allocated outside the V8 heap in &#8220;External Memory.&#8221; This is why your process might show 1GB of RAM usage in <code>top<\/code>, but your V8 heap metrics show only 200MB. If you are handling file uploads or streaming data, you need to monitor <code>external<\/code> memory specifically. I\u2019ve seen many teams ignore this and wonder why their containers are getting OOM-killed when the &#8220;heap usage&#8221; looks fine.<\/p>\n<pre><code>const used = process.memoryUsage();\nconsole.log(`Heap Used: ${used.heapUsed \/ 1024 \/ 1024} MB`);\nconsole.log(`External: ${used.external \/ 1024 \/ 1024} MB`);\nconsole.log(`RSS: ${used.rss \/ 1024 \/ 1024} MB`);\n<\/code><\/pre>\n<p>If <code>RSS<\/code> (Resident Set Size) is climbing but <code>heapUsed<\/code> is flat, you have a <code>Buffer<\/code> or a C++ addon leak. This is common when using older versions of <code>grpc<\/code> or custom image processing libraries.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Performance_Hidden_Classes_and_Deoptimizations\"><\/span>Performance: Hidden Classes and Deoptimizations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>V8 tries to optimize your code by creating &#8220;hidden classes&#8221; for your objects. If you change the shape of an object (by adding or deleting properties) after it&#8217;s been created, V8 &#8220;deoptimizes&#8221; that code. It drops back to a slower, interpreted mode.<\/p>\n<pre><code>\/\/ V8 loves this\nfunction User(id, name) {\n  this.id = id;\n  this.name = name;\n}\nconst user1 = new User(1, 'Alice');\nconst user2 = new User(2, 'Bob');\n\n\/\/ V8 hates this\nconst user3 = { id: 3 };\nuser3.name = 'Charlie'; \/\/ Shape change!\n\ndelete user3.id; \/\/ Shape change again! V8 gives up.\n<\/code><\/pre>\n<p>In a high-frequency loop, this can be the difference between 10k operations per second and 100k. Always initialize your objects with all their fields, even if they are <code>null<\/code> or <code>undefined<\/code>. Never use <code>delete<\/code>; set the value to <code>undefined<\/code> instead.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Wrap-up\"><\/span>The Wrap-up<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Stop chasing the latest framework or the &#8220;cleanest&#8221; syntax. JavaScript in production is a game of resource management, error propagation, and understanding the underlying runtime. If you treat your code like a delicate piece of art, it will break the moment it hits real traffic. Treat it like a plumbing system: it needs to handle pressure, it needs clear drainage for errors, and you need to know exactly where the leaks are. Stop obsessing over &#8220;javascript best&#8221; and start obsessing over &#8220;javascript stable.&#8221;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Related_Articles\"><\/span>Related Articles<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Explore more insights and best practices:<\/p>\n<ul>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/whatsapp-dark-theme-live-for-beta-devices\/\">Whatsapp Dark Theme Live For Beta Devices<\/a><\/li>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/what-is-machine-learning-a-complete-beginners-guide\/\">What Is Machine Learning A Complete Beginners Guide<\/a><\/li>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/what-is-javascript-a-complete-beginners-guide\/\">What Is Javascript A Complete Beginners Guide<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript Best Practices: Why Your &#8220;Clean Code&#8221; is Crashing My Production Nodes It was 3:14 AM on a Tuesday in 2019. I was on-call for a payment processing gateway. Our Node.js worker fleet started dropping like flies. The error? ERR_S3_UPLOAD_FAILED followed immediately by an OOM-killed signal from the Kubelet. I spent four hours digging through &#8230; <a title=\"JavaScript Best Practices: Write Cleaner, Faster Code\" class=\"read-more\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/\" aria-label=\"Read more  on JavaScript Best Practices: Write Cleaner, Faster Code\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4782","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>JavaScript Best Practices: Write Cleaner, Faster Code - ITSupportWale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itsupportwale.com\/blog\/javascript-best-practices-write-cleaner-faster-code-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript Best Practices: Write Cleaner, Faster Code - ITSupportWale\" \/>\n<meta property=\"og:description\" content=\"JavaScript Best Practices: Why Your &#8220;Clean Code&#8221; is Crashing My Production Nodes It was 3:14 AM on a Tuesday in 2019. 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