In-depth articles on JavaScript, TypeScript, AWS, and DevOps by Aditya Rawas, frontend developer and technical writer.https://adityarawas.in/en-ushttps://adityarawas.in/blog/learning-typescript/how-typescript-compiles-to-javascript/https://adityarawas.in/blog/learning-typescript/how-typescript-compiles-to-javascript/Discover exactly how TypeScript transforms into JavaScript through 4 compilation steps. Interactive animations, live demos, and visual guides for Node.js and browser execution.Fri, 26 Jun 2026 00:00:00 GMTtypescriptjavascripttypescript compilercompilationtscesbuildswctsxweb developmenthttps://adityarawas.in/blog/learning-typescript/the-benefits-of-typescript/https://adityarawas.in/blog/learning-typescript/the-benefits-of-typescript/Why we need TypeScript and its core benefits over vanilla JavaScript. Includes interactive demos!Thu, 25 Jun 2026 00:00:00 GMTtypescriptjavascriptweb developmenthttps://adityarawas.in/blog/understanding-structs-in-go/https://adityarawas.in/blog/understanding-structs-in-go/Learn how Go structs work — defining custom types, creating instances, passing by value vs pointer, adding methods, and using constructor functions for clean, validated Go code.Tue, 01 Jul 2025 00:00:00 GMTGo structsGolang structs tutorialGo struct methodsGo pointers and structsGo constructor functiondata modeling in GoGo beginner tutorialGo struct vs classGo struct initializationGolang object orientedhttps://adityarawas.in/blog/understanding-data-in-ai/https://adityarawas.in/blog/understanding-data-in-ai/Explore what data means in AI — structured vs unstructured data, how to collect and label it, three acquisition strategies, common data mistakes to avoid, and real-world ML examples.Sun, 20 Apr 2025 00:00:00 GMTAI datamachine learning datastructured dataunstructured datasupervised learningdata labelingAI basicsdata science fundamentalstraining datadata collection AIhttps://adityarawas.in/blog/how-llms-work/https://adityarawas.in/blog/how-llms-work/Learn how large language models like ChatGPT work — from next-word prediction and supervised learning to neural networks, scaling, and fine-tuning for safety and instruction-following.Sat, 19 Apr 2025 00:00:00 GMTLarge Language ModelsLLM tutorialHow ChatGPT workssupervised learningneural networksAI basicsmachine learning fundamentalstransformer modelgenerative AInext-word predictionhttps://adityarawas.in/blog/node-fs-module/https://adityarawas.in/blog/node-fs-module/Master the Node.js fs module — async and sync methods for reading, writing, renaming, and deleting files, plus directory creation and FAQs, with practical code examples.Tue, 07 Jan 2025 00:00:00 GMTNode.js fs moduleNode.js file systemreadFile Node.jswriteFile Node.jsasync file operationsNode.js tutorialfile I/O Node.jsfs.readFilefs.writeFileNode.js backendhttps://adityarawas.in/blog/understanding-difference-app-use-app-all-express-js/https://adityarawas.in/blog/understanding-difference-app-use-app-all-express-js/Learn the difference between app.use and app.all in Express.js — middleware vs route handling, partial vs exact path matching, and when to use each with clear examples and a comparison table.Fri, 03 Jan 2025 00:00:00 GMTExpress.js app.useExpress.js app.allExpress.js middlewareExpress route handlingNode.js Express tutorialExpress.js path matchingExpress.js HTTP methodsapp.use vs app.allExpress.js guideNode.js backendhttps://adityarawas.in/blog/nodejs-threading/https://adityarawas.in/blog/nodejs-threading/Understand how Node.js handles concurrency — single-threaded JavaScript execution, libuv thread pool, worker threads for CPU-intensive tasks, and when to use each approach.Fri, 29 Nov 2024 00:00:00 GMTNode.js threadingNode.js concurrencylibuv thread poolworker threads Node.jsNode.js event loopNode.js single threadedNode.js performanceV8 engineNode.js architecturehttps://adityarawas.in/blog/from-code-to-execution-javascript-engine-deep-dive/https://adityarawas.in/blog/from-code-to-execution-javascript-engine-deep-dive/Explore how JavaScript goes from source code to execution — parsing, AST generation, Ignition interpreter, TurboFan JIT compiler, and bytecode optimization explained step by step.Wed, 20 Nov 2024 00:00:00 GMTJavaScript engineV8 engineJIT compilationAbstract Syntax TreeJavaScript performanceIgnition interpreterTurboFan compilerJavaScript internalsbytecodehow JavaScript workshttps://adityarawas.in/blog/simplifying-imports-with-the-barrel-pattern/https://adityarawas.in/blog/simplifying-imports-with-the-barrel-pattern/Learn the Barrel Pattern — how to use index.ts barrel files to simplify imports, reduce deep path complexity, and keep your JavaScript and TypeScript projects organized and maintainable.Mon, 28 Oct 2024 00:00:00 GMTBarrel PatternTypeScript importsJavaScript module organizationindex.ts barrel fileclean code TypeScriptmodule exports patternTypeScript best practicessimplify imports JavaScriptTypeScript architectureJavaScript project structurehttps://adityarawas.in/blog/understanding-how-require-works-in-commonjs/https://adityarawas.in/blog/understanding-how-require-works-in-commonjs/Deep dive into how Node.js require() resolves module paths, checks the module cache, wraps code in closures, executes modules, and returns exports — with annotated source-level walkthrough.Wed, 23 Oct 2024 00:00:00 GMTNode.js requireCommonJS modulesNode.js module loadingmodule.exportsNode.js module cacherequire() internalsNode.js modules tutorialCJS module systemNode.js deep divehow modules work Node.jshttps://adityarawas.in/blog/creating-your-first-go-module/https://adityarawas.in/blog/creating-your-first-go-module/Learn how to create, link, and use Go modules locally — build a reusable math utilities module, use go mod init, the replace directive, and go mod tidy with practical examples.Wed, 09 Oct 2024 00:00:00 GMTGo modulesgo mod initgo mod tidylocal Go moduleGo replace directiveGo programming tutorialGolang module systemGo module dependencygo mod editGo workspacehttps://adityarawas.in/blog/demystifying-go-sprintf/https://adityarawas.in/blog/demystifying-go-sprintf/Master Go's fmt.Sprintf() with the top 5 format verbs (%v, %s, %d, %q, %t), argument indexing, avoiding common pitfalls, and writing clean, readable formatted strings.Sat, 05 Oct 2024 00:00:00 GMTGo fmt.SprintfGo string formattingGo format verbsGo Printf tutorialargument indexing GoGo fmt packageGo stringsGolang formattingGo programmingfmt.Printf Gohttps://adityarawas.in/blog/comprehensive-guide-go-data-types/https://adityarawas.in/blog/comprehensive-guide-go-data-types/Explore every Go data type — bool, string, int, float, byte, rune, complex types, type conversion, and type inference — with practical examples and best practices.Wed, 02 Oct 2024 00:00:00 GMTGo data typesGolang typesGo int float bool stringGo type systemGo byte runeGo type inferenceGo type conversionGo programming tutorialGo beginner guideGolang fundamentalshttps://adityarawas.in/blog/understanding-go-runtime-deep-dive/https://adityarawas.in/blog/understanding-go-runtime-deep-dive/A deep dive into the Go runtime — automatic memory management, concurrent garbage collection, goroutines, the M:N work-stealing scheduler, and system call integration explained for Go developers.Mon, 30 Sep 2024 00:00:00 GMTGo runtimeGo garbage collectiongoroutinesGo schedulerGo memory managementGo concurrencyGolang runtime deep diveGo performanceGo GCGo M:N schedulerhttps://adityarawas.in/blog/how-to-install-go/https://adityarawas.in/blog/how-to-install-go/Step-by-step guide to installing Go (Golang) on Linux, macOS, and Windows. Set up your PATH, extract the archive correctly, and verify your installation in minutes.Fri, 27 Sep 2024 00:00:00 GMTInstall GoGolang installationGo setupGo on LinuxGo on macOSGo on WindowsGo PATH setupGolang tutorialGo programmingDay 1 of Gohttps://adityarawas.in/blog/understanding-implicit-and-explicit-coercion-in-javascript/https://adityarawas.in/blog/understanding-implicit-and-explicit-coercion-in-javascript/Understand JavaScript type coercion — what implicit automatic conversions do, how to use explicit methods like Number(), String(), Boolean(), and parseInt(), and when to use each.Tue, 24 Sep 2024 00:00:00 GMTJavaScript type coercionimplicit coercion JavaScriptexplicit coercion JavaScriptJavaScript type conversionNumber() String() Boolean()JavaScript basicsJS type systemparseInt parseFloatJavaScript gotchasJavaScript interview questionshttps://adityarawas.in/blog/how-to-kill-processes-and-free-up-ports/https://adityarawas.in/blog/how-to-kill-processes-and-free-up-ports/Quick commands to find and kill processes blocking a port on macOS, Linux, and Windows — using lsof, kill, netstat, taskkill, and top with step-by-step instructions.Mon, 23 Sep 2024 00:00:00 GMTkill processfree up portlsof commandtaskkill Windowsnetstat portLinux kill processMac kill processWindows kill processport already in usedeveloper toolsterminal commandshttps://adityarawas.in/blog/understanding-css-units/https://adityarawas.in/blog/understanding-css-units/A comprehensive guide to every CSS unit — absolute units (px, pt, cm), relative units (em, rem, vw, vh), and newer dynamic viewport units for responsive web design.Tue, 02 Jul 2024 00:00:00 GMTCSS unitsCSS px vs remCSS responsive designviewport units vw vhem vs rem CSSCSS absolute unitsCSS relative unitsweb design fundamentalsCSS sizingresponsive typographyhttps://adityarawas.in/blog/dummy-seo-friendly-blog/https://adityarawas.in/blog/dummy-seo-friendly-blog/A comprehensive deep dive into building blisteringly fast, perfectly optimized portfolio sites in 2024 using Astro, strict metadata, and a brutalist design aesthetic.Wed, 15 May 2024 00:00:00 GMTAstroSEOPerformancePortfolio