--- title: Best TypeScript posts — June 2021 | daily.dev description: The most upvoted TypeScript posts from June 2021, curated by the daily.dev community. canonical: https://daily.dev/tags/typescript/best-of/2021/06 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/tags/typescript/best-of/2021/06 og:type: website og:site_name: daily.dev og:title: Best TypeScript posts — June 2021 | daily.dev og:description: The most upvoted TypeScript posts from June 2021, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of TypeScript — June 2021 1. 1 [](https://daily.dev/posts/reading-clean-code-week-1-voxtjiuas "Reading Clean Code: Week 1") Article gitconnected · 5y Reading Clean Code: Week 1 Clean Code was written by Bob Martin and first released in 2009\. In this blog post, Jacob looks back at code he wrote for a previous project. He refactors the code to reflect on the lessons he’s been learning from Clean Code. Jacob: I hope it inspires you to always, whatever you do, write clean code. 52 2 2. 2 [](https://daily.dev/posts/3-design-patterns-in-typescript-for-frontend-developers-praiq3rka "3 Design Patterns in TypeScript for Frontend Developers") Article asayer · 5y 3 Design Patterns in TypeScript for Frontend Developers 48 2 3. 3 [](https://daily.dev/posts/node-js-vs-flask-which-one-has-a-better-performance-vttlb0h4y "Node.js Vs Flask: Which One Has A Better Performance") Article Hacker Noon · 5y Node.js Vs Flask: Which One Has A Better Performance Radley Sidwell-Lewis has been using Node.js for almost all of the backend servers he has built using Express.js. The first language he learned wasn’t JavaScript, it was Python. Python appears to have a sexier reputation among non-engineers, for the most part. 40 1 4. 4 [](https://daily.dev/posts/what-s-new-in-svelte-june-2021--jotxp26t "What's new in Svelte: June 2021") Article Svelte Blog · 5y What's new in Svelte: June 2021 This month, we saw lots of contributions to SvelteKit and its docs. The language tools also got some new features, most notably deeper integration with S Velte files within JavaScript or TypeScript files. The VS Code extension svelte-check got a new major release. 20 5. 5 [](https://daily.dev/posts/advanced-typescript-a-generic-function-to-update-and-manipulate-object-arrays-tr3jbar8x "Advanced TypeScript: A Generic Function to Update and Manipulate Object Arrays") Article JavaScript in Plain English · 5y Advanced TypeScript: A Generic Function to Update and Manipulate Object Arrays A Generic Function to Update and Manipulate Object Arrays. Advanced TypeScript: A Generic function of ultimate power! Chris Frewin Follow Jun 9 · 6 min read updateArray.ts in all its glory. This post is mirrored on my blog, where you’ll find way better code snippets — they’re copy-and-pasteable too. 18 6. 6 [](https://daily.dev/posts/typescript-interfaces-or-types-what-s-the-difference--991v8goor "TypeScript: Interfaces or Types. What’s the Difference?") Article Scott Logic · 5y TypeScript: Interfaces or Types. What’s the Difference? When I first started using TypeScript I was presented with a conundrum. Why have two ways to do the same thing? Then I read briefly into it, and the advice was use interface, not type. So I did, and I thought no more about it. As I began to use TypeScript more, type began to creep back into my usage, where it was necessary. 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