Another day to Frontend, Performance, React, Javascripthttps://blog.m4x.io/https://blog.m4x.io/2026/2026-the-model-wants-to-finish-you-want-it-to-be-right/https://blog.m4x.io/2026/2026-the-model-wants-to-finish-you-want-it-to-be-right/AI is optimistic about its own progress. Once you understand that, the question stops being "should I use AI" and becomes "where is its optimism going to hurt me."Thu, 30 Apr 2026 00:00:00 GMThttps://blog.m4x.io/2026/2026-ui-patterns-for-agent-driven-products/https://blog.m4x.io/2026/2026-ui-patterns-for-agent-driven-products/Some thoughts about designing mass-market agent-driven interfaces that reduce clutter, adapt to context, and stay legible-especially when the product should assist without overruling user judgment.Mon, 13 Apr 2026 00:00:00 GMThttps://blog.m4x.io/2026/2026-vibeding-is-here-to-stay/https://blog.m4x.io/2026/2026-vibeding-is-here-to-stay/A short, opinionated essay on why vibe coding is already part of modern software work, why broad prompts create risk, and which guardrails make AI-assisted development more durable in practice.Thu, 02 Apr 2026 00:00:00 GMThttps://blog.m4x.io/2026/2026-staying-sane-when-ai-keep-changing-your-workflow/https://blog.m4x.io/2026/2026-staying-sane-when-ai-keep-changing-your-workflow/A personal essay on how AI agents fragment attention, why that makes focus harder, and the small boundaries that keep the tool useful instead of overwhelming.Mon, 30 Mar 2026 00:00:00 GMThttps://blog.m4x.io/2026/2026-fe-interviews-what-to-measure-in-the-ai-era/https://blog.m4x.io/2026/2026-fe-interviews-what-to-measure-in-the-ai-era/A case for updating frontend interviews to measure judgment, conflict skill, adaptability, and AI-aware workflows instead of memorized coding fluency.Thu, 26 Mar 2026 00:00:00 GMThttps://blog.m4x.io/2026/2026-what-frontend-engineers-need-to-stop-pretending-about/https://blog.m4x.io/2026/2026-what-frontend-engineers-need-to-stop-pretending-about/A short essay about the uneasy shift in frontend engineering as AI makes it easier to work across the stack, and why verification matters as much as expansion.Mon, 23 Mar 2026 00:00:00 GMThttps://blog.m4x.io/2026/2026-a-year-of-transition/https://blog.m4x.io/2026/2026-a-year-of-transition/After two years away from the blog, a lot has changed. AI entered the room, and so did a decision to stop being a wannabe-founder.Thu, 19 Mar 2026 00:00:00 GMThttps://blog.m4x.io/2026/notes-from-a-monday-without-a-job/https://blog.m4x.io/2026/notes-from-a-monday-without-a-job/A couple of months into job hunting, a snapshot of someone figuring things out in the middle of a strange moment in the industry.Mon, 16 Mar 2026 00:00:00 GMThttps://blog.m4x.io/2022/migration-logs-stack/https://blog.m4x.io/2022/migration-logs-stack/Choosing the stack is not easy.Wed, 04 May 2022 00:00:00 GMThttps://blog.m4x.io/2022/migrating-my-blog-from-gatsby/https://blog.m4x.io/2022/migrating-my-blog-from-gatsby/I am migrating my blog from gatsby here are the reasons why:Sun, 01 May 2022 00:00:00 GMThttps://blog.m4x.io/2021/how-i-ll-write-notes/https://blog.m4x.io/2021/how-i-ll-write-notes/Review: How to take smart notesSun, 26 Dec 2021 00:00:00 GMThttps://blog.m4x.io/2021/positive-team-vibe-shoutouts/https://blog.m4x.io/2021/positive-team-vibe-shoutouts/Giving and receiving shoutouts regularly is something I am experiencing more often since I joined WeTransfer. I noticed the difference to other companies I was is sutil but the impact it had in me is bigSat, 27 Nov 2021 00:00:00 GMThttps://blog.m4x.io/2021/i-suck-at-writing/https://blog.m4x.io/2021/i-suck-at-writing/Simple as that. I really suck at writing... It s hard to put in words a chaotic brain. I constantly try to organise my thoughts and that process drains all my energyMon, 22 Nov 2021 00:00:00 GMThttps://blog.m4x.io/2021/webpack-how-to-fix-out-of-memory/https://blog.m4x.io/2021/webpack-how-to-fix-out-of-memory/This past week I encountered an error where a build process was failing in a CI environment because the system was running out of memory. The error looked something similar to: Javascript heap out of memoryMon, 25 Oct 2021 00:00:00 GMThttps://blog.m4x.io/2021/react-testing-library-assert-visibility/https://blog.m4x.io/2021/react-testing-library-assert-visibility/There are times where you want to assert that an element is not there. This is useful in cases where your component has specific logic that will make it "disappear".Fri, 15 Oct 2021 00:00:00 GMThttps://blog.m4x.io/2021/first-week-at-wetransfer/https://blog.m4x.io/2021/first-week-at-wetransfer/Last week I started as a Frontend Engineer at WeTransfer. That made me think. What should I do in my first week?Tue, 12 Oct 2021 00:00:00 GMThttps://blog.m4x.io/2021/small-retro-coolblue/https://blog.m4x.io/2021/small-retro-coolblue/After an end of something. Is good to evaluate how it went.Mon, 23 Aug 2021 00:00:00 GMThttps://blog.m4x.io/2021/on-switching-companies/https://blog.m4x.io/2021/on-switching-companies/I am not sure if I want to make this explicitWed, 18 Aug 2021 00:00:00 GMThttps://blog.m4x.io/2021/engaging-in-remote-calls/https://blog.m4x.io/2021/engaging-in-remote-calls/Engaging in meeting is hard, even more in remote times.Sun, 11 Jul 2021 00:00:00 GMThttps://blog.m4x.io/2021/low-profile-high-profile/https://blog.m4x.io/2021/low-profile-high-profile/The tradeoffs of being in the shadowTue, 11 May 2021 00:00:00 GMThttps://blog.m4x.io/2021/motivation-vs-system/https://blog.m4x.io/2021/motivation-vs-system/Consistency in writing is hardSun, 02 May 2021 00:00:00 GMThttps://blog.m4x.io/2021/role-titles-for-the-software-industry/https://blog.m4x.io/2021/role-titles-for-the-software-industry/Why are titles like that? Why is it?Sun, 07 Feb 2021 00:00:00 GMThttps://blog.m4x.io/2021/quickreview-mswjs/https://blog.m4x.io/2021/quickreview-mswjs/quickreviews: Fri, 22 Jan 2021 00:00:00 GMThttps://blog.m4x.io/2021/when-do-you-say-a-website-is-fast/https://blog.m4x.io/2021/when-do-you-say-a-website-is-fast/15 years ago, I remember when I saw for the first time an image rendered on a screen from the Internet and I was amazed by it.Sun, 17 Jan 2021 00:00:00 GMThttps://blog.m4x.io/2021/quickreview-compiled-css-in-js/https://blog.m4x.io/2021/quickreview-compiled-css-in-js/quickreviews: Fri, 08 Jan 2021 00:00:00 GMThttps://blog.m4x.io/2021/the-reason-i-move-away-from-disqus/https://blog.m4x.io/2021/the-reason-i-move-away-from-disqus/Adding comments to your blog or web app is a fairly common task. You should know that the cost of including an external service like Disqus could be high.Wed, 06 Jan 2021 00:00:00 GMThttps://blog.m4x.io/2021/snowpack-a-promising-module-bundler/https://blog.m4x.io/2021/snowpack-a-promising-module-bundler/I checked a "new library" called Snowpack. It turned out to be a revamped version of pikaSun, 03 Jan 2021 00:00:00 GMThttps://blog.m4x.io/2020/ui-performance-fcp-fmp-lcp/https://blog.m4x.io/2020/ui-performance-fcp-fmp-lcp/FCP vs FMP vs LCPThu, 31 Dec 2020 00:00:00 GMThttps://blog.m4x.io/2020/ui-performance-metrics-tti-vs-fid/https://blog.m4x.io/2020/ui-performance-metrics-tti-vs-fid/TTI and FID are both good candidates to measure interactive. One is better than the other depending on the situation.Sun, 27 Dec 2020 00:00:00 GMThttps://blog.m4x.io/2020/ui-performance-metrics-tti-vs-dominteractive/https://blog.m4x.io/2020/ui-performance-metrics-tti-vs-dominteractive/We might have different ideas about what that means and certanly that is the case between time to interactive and dom InteractiveFri, 11 Dec 2020 00:00:00 GMThttps://blog.m4x.io/2020/ui-performance-metrics-what-is-time-to-interactive/https://blog.m4x.io/2020/ui-performance-metrics-what-is-time-to-interactive/The list of metrics the browser provides is longer than what I thought and hopefully I can summarise in here what they represent. TLDR; Web-core-vitals.Sun, 06 Dec 2020 00:00:00 GMThttps://blog.m4x.io/2020/overview-ui-performance-metrics-a-curated-list/https://blog.m4x.io/2020/overview-ui-performance-metrics-a-curated-list/The list of metrics the browser provides is longer than what I thought and hopefully I can summarise in here what they represent. TLDR; Web-core-vitals.Sun, 22 Nov 2020 00:00:00 GMThttps://blog.m4x.io/2020/dev-performance-culture-seed-stage/https://blog.m4x.io/2020/dev-performance-culture-seed-stage/I want to tell you a little bit of my experience on being a spectator/participant of some sort of performance culture creation. TLDR; Monitoring.Sat, 14 Nov 2020 00:00:00 GMThttps://blog.m4x.io/2020/how-to-improve-the-ux-by-optimizing-your-fonts/https://blog.m4x.io/2020/how-to-improve-the-ux-by-optimizing-your-fonts/I was checking some performance audit tools and a common sign that every tool was giving was that the way I was requesting the fonts was hurting the speed.Sun, 16 Aug 2020 00:00:00 GMThttps://blog.m4x.io/2020/ui-explicit-vs-implicit-ctas/https://blog.m4x.io/2020/ui-explicit-vs-implicit-ctas/How do you know when to stop adding elements to your page?Sun, 19 Jul 2020 00:00:00 GMThttps://blog.m4x.io/2020/seo-client-side-rendering/https://blog.m4x.io/2020/seo-client-side-rendering/How does SEO work with Single page applications?Thu, 16 Jul 2020 00:00:00 GMThttps://blog.m4x.io/2020/is-twitter-client-side-only/https://blog.m4x.io/2020/is-twitter-client-side-only/Is twitter a client-side only app? if then how do they do SEO?Wed, 15 Jul 2020 00:00:00 GMThttps://blog.m4x.io/2020/quickreview-react-recoil/https://blog.m4x.io/2020/quickreview-react-recoil/quickreviews: A 5 mins review of react-recoilTue, 14 Jul 2020 00:00:00 GMThttps://blog.m4x.io/2020/life-chaos-exploration-and-technology/https://blog.m4x.io/2020/life-chaos-exploration-and-technology/Chaos as an exploration tool, you have all you need to discover what you really likeSun, 07 Jun 2020 00:00:00 GMThttps://blog.m4x.io/2020/how-to-equalize-your-rows-in-react/https://blog.m4x.io/2020/how-to-equalize-your-rows-in-react/react-equalize: How to Equalize the height of your elements in your pageSat, 28 Mar 2020 00:00:00 GMThttps://blog.m4x.io/quickreview-node-js-cli-best-practices/https://blog.m4x.io/quickreview-node-js-cli-best-practices/quickreviews: A list of **21** tips you can apply when creating a CLI in Node.jsSat, 21 Mar 2020 00:00:00 GMThttps://blog.m4x.io/quickreviews-chakra-ui/https://blog.m4x.io/quickreviews-chakra-ui/quickreviews: my opinion on chakra-ui, the accessible component libraryWed, 11 Mar 2020 00:00:00 GMThttps://blog.m4x.io/quickreviews-lion-webcomponents/https://blog.m4x.io/quickreviews-lion-webcomponents/quickreviews: Lion web components libraryMon, 02 Mar 2020 00:00:00 GMThttps://blog.m4x.io/frontend-architecture-install-vs-write/https://blog.m4x.io/frontend-architecture-install-vs-write/frontend architecture: Installing vs Writing modulesSun, 01 Mar 2020 00:00:00 GMThttps://blog.m4x.io/es/como-habilitar-concurrent-mode/https://blog.m4x.io/es/como-habilitar-concurrent-mode/React: Como habilitar react concurrent mode?Sat, 30 Nov 2019 00:00:00 GMThttps://blog.m4x.io/add-disqus-to-your-react-app-in-a-glance/https://blog.m4x.io/add-disqus-to-your-react-app-in-a-glance/react comments: How to add disqus to your react appWed, 27 Nov 2019 00:00:00 GMThttps://blog.m4x.io/what-is-concurrent-mode/https://blog.m4x.io/what-is-concurrent-mode/React: What really is concurrent mode?Tue, 19 Nov 2019 00:00:00 GMThttps://blog.m4x.io/es/que-es-react-concurrent-mode/https://blog.m4x.io/es/que-es-react-concurrent-mode/React: Introduccion a concurrent mode. Una explicacion basica de su functionamientoSat, 16 Nov 2019 00:00:00 GMThttps://blog.m4x.io/031-quickreviews-ikonate/https://blog.m4x.io/031-quickreviews-ikonate/quickreviews: ikonate is an icon library with customization and performance in mindSun, 21 Apr 2019 00:00:00 GMThttps://blog.m4x.io/030-quickreviews-playroom/https://blog.m4x.io/030-quickreviews-playroom/quickreviews: playroom is a playground for your react componentsMon, 15 Apr 2019 00:00:00 GMThttps://blog.m4x.io/029-quickreviews-layzr/https://blog.m4x.io/029-quickreviews-layzr/quickreviews: a modern lazy load library for your images. Fancy from the startFri, 12 Apr 2019 00:00:00 GMThttps://blog.m4x.io/028-quickreviews-lazysizes/https://blog.m4x.io/028-quickreviews-lazysizes/quickreviews: a must have lazy load library for your images Its so advanced is confusingWed, 10 Apr 2019 00:00:00 GMThttps://blog.m4x.io/027-quickreviews-realworld/https://blog.m4x.io/027-quickreviews-realworld/quickreviews: realworld will present you a pretty big application and how it is implemented on different stacksTue, 09 Apr 2019 00:00:00 GMThttps://blog.m4x.io/026-quickreviews-perflink/https://blog.m4x.io/026-quickreviews-perflink/quickreviews: perflink a real time performance benchmark tooling tool to compare js snippetsMon, 08 Apr 2019 00:00:00 GMThttps://blog.m4x.io/025-quickreviews-solid/https://blog.m4x.io/025-quickreviews-solid/quickreviews: solid a non-vdom ui librarySun, 07 Apr 2019 00:00:00 GMThttps://blog.m4x.io/024-quickreviews-pikaweb/https://blog.m4x.io/024-quickreviews-pikaweb/quickreviews: pikapkg web bundler? Sat, 06 Apr 2019 00:00:00 GMThttps://blog.m4x.io/023-quickreviews-introduction/https://blog.m4x.io/023-quickreviews-introduction/quickreviews: the place where we quickly review upcoming libraries/frameworks togetherFri, 05 Apr 2019 00:00:00 GMThttps://blog.m4x.io/022-mjs-conclusion/https://blog.m4x.io/022-mjs-conclusion/Modular Javascript, book conclusion: modularity is a doable edge swordWed, 03 Apr 2019 00:00:00 GMThttps://blog.m4x.io/021-mjs-modular-philosophy-and-methodology-3/https://blog.m4x.io/021-mjs-modular-philosophy-and-methodology-3/Modular Javascript, philosophy: Applying modularity in the build process and outside of your core systemsFri, 29 Mar 2019 00:00:00 GMThttps://blog.m4x.io/020-mjs-modular-philosophy-and-methodology-2/https://blog.m4x.io/020-mjs-modular-philosophy-and-methodology-2/part IIThu, 28 Mar 2019 00:00:00 GMThttps://blog.m4x.io/019-mjs-modular-philosophy-and-methodology/https://blog.m4x.io/019-mjs-modular-philosophy-and-methodology/part ITue, 26 Mar 2019 00:00:00 GMThttps://blog.m4x.io/018-mjs-code-patterns/https://blog.m4x.io/018-mjs-code-patterns/part IIIMon, 25 Mar 2019 00:00:00 GMThttps://blog.m4x.io/017-mjs-modular-patterns-and-practices-2/https://blog.m4x.io/017-mjs-modular-patterns-and-practices-2/part IISat, 23 Mar 2019 00:00:00 GMThttps://blog.m4x.io/016-mjs-modular-patterns-and-practices/https://blog.m4x.io/016-mjs-modular-patterns-and-practices/part IMon, 18 Feb 2019 00:00:00 GMThttps://blog.m4x.io/015-mjs-shaping-internals-3/https://blog.m4x.io/015-mjs-shaping-internals-3/part IIISun, 17 Feb 2019 00:00:00 GMThttps://blog.m4x.io/014-mjs-shaping-internals-2/https://blog.m4x.io/014-mjs-shaping-internals-2/part IIThu, 14 Feb 2019 00:00:00 GMThttps://blog.m4x.io/013-mjs-shaping-internals/https://blog.m4x.io/013-mjs-shaping-internals/part IMon, 11 Feb 2019 00:00:00 GMThttps://blog.m4x.io/012-mjs-module-design-3/https://blog.m4x.io/012-mjs-module-design-3/part IIISat, 09 Feb 2019 00:00:00 GMThttps://blog.m4x.io/011-mj-module-design-2/https://blog.m4x.io/011-mj-module-design-2/part IITue, 05 Feb 2019 00:00:00 GMThttps://blog.m4x.io/010-mjs-module-design/https://blog.m4x.io/010-mjs-module-design/part ISun, 03 Feb 2019 00:00:00 GMThttps://blog.m4x.io/008-mjs-modularity-principles-2/https://blog.m4x.io/008-mjs-modularity-principles-2/part 2Sat, 02 Feb 2019 00:00:00 GMThttps://blog.m4x.io/009-mjs-modularity-principles/https://blog.m4x.io/009-mjs-modularity-principles/part ISun, 27 Jan 2019 00:00:00 GMThttps://blog.m4x.io/007-mjs-module-thinking-2/https://blog.m4x.io/007-mjs-module-thinking-2/part IISun, 20 Jan 2019 00:00:00 GMThttps://blog.m4x.io/006-js-private-properties-2/https://blog.m4x.io/006-js-private-properties-2/part IISun, 23 Dec 2018 00:00:00 GMThttps://blog.m4x.io/005-js-private-properties/https://blog.m4x.io/005-js-private-properties/part ISun, 30 Sep 2018 00:00:00 GMThttps://blog.m4x.io/004-mjs-module-thinking/https://blog.m4x.io/004-mjs-module-thinking/part ISat, 15 Sep 2018 00:00:00 GMThttps://blog.m4x.io/003-redux-services-101/https://blog.m4x.io/003-redux-services-101/Sat, 08 Sep 2018 00:00:00 GMThttps://blog.m4x.io/002-a-rough-start/https://blog.m4x.io/002-a-rough-start/Sun, 02 Sep 2018 00:00:00 GMThttps://blog.m4x.io/001-et-has-a-start/https://blog.m4x.io/001-et-has-a-start/Sat, 01 Sep 2018 00:00:00 GMT