feat "Why I choose Svelte" blogpost #2804

paoloricciuti · 2025-10-29T15:15:46Z

Pushing this already (obviously it's not finished at all) because since it's a bit of a weird one I think it's important to get feedback immediately to not rewrite everything in case it's not the direction we want to go towards.

RENDERED VERSION

marcoow

I think when talking about the why you need to talk about the what as well which for example could cover the fact that Svelte scales nicely from widgets to large-scale apps (and maybe native via Lynx eventually)

marcoow · 2025-10-29T15:30:44Z

src/posts/2025-11-06-why-choose-svelte.md

+
+{% endnote %}
+
+## Compiler


I'd be more explicit here about the fact that this results in potentially better long-term maintainability: the compiler acts as a buffer between Svelte and the platform so that Svelte code doesn't need to change when the platform changes or develops further -> better long-term maintainability and more long-term safety for investments into Svelte

Isn't this basically the third point?

It's implied in your 3rd point but not explicit

BlueCutOfficial

I haven't read the whole article yet, just the first section. I'll get back to it on Tuesday if not merged yet.

BlueCutOfficial · 2026-01-16T15:53:24Z

src/posts/2025-11-06-why-choose-svelte.md

+
+At Mainmatter we are well aware of our choices. We choose Svelte and we advise our clients to do the same.
+
+Our clients, following good engineering practices don't just blindly trust us and asks: why? Why should I choose Svelte to develop my product?


Suggested change

Our clients, following good engineering practices don't just blindly trust us and asks: why? Why should I choose Svelte to develop my product?

Our clients, following good engineering practices, don't just blindly trust us and ask: Why? Why should I choose Svelte to develop my product?

BlueCutOfficial · 2026-01-16T15:55:03Z

src/posts/2025-11-06-why-choose-svelte.md

+
+## Compiler
+
+I still remember the first time I've heard of Svelte: I was in the excruciating line to get my covid vaccine shot and I was entertaining myself with some YouTube video. I stumbled across this now-famous conference talk from Rich Harris: [Rethinking Reactivity](https://youtu.be/AdNJ3fydeao?si=sMn-kLIPESubUD14)


Suggested change

I still remember the first time I've heard of Svelte: I was in the excruciating line to get my covid vaccine shot and I was entertaining myself with some YouTube video. I stumbled across this now-famous conference talk from Rich Harris: [Rethinking Reactivity](https://youtu.be/AdNJ3fydeao?si=sMn-kLIPESubUD14)

I still remember the first time I've heard of Svelte: I was in the excruciating line to get my covid vaccine shot and I was entertaining myself with some YouTube video. I stumbled across this now-famous conference talk from Rich Harris: [Rethinking Reactivity](https://youtu.be/AdNJ3fydeao?si=sMn-kLIPESubUD14).

BlueCutOfficial · 2026-01-16T15:58:11Z

src/posts/2025-11-06-why-choose-svelte.md

+
+In this talk Rich showcased the idea of moving the reactivity from the runtime into the language itself. A compiler! Just like in the good ol days a C compiler could help you write programs in an easier way by writing the ASSEMBLY code for you, Svelte can help you write websites in an easier way by writing Javascript code for you. Being a compiler is the first reason why I would choose Svelte and this has several implications:
+
+1. **New language constructs**: a compiler gives you a superpower...if you write a JavaScript variable in an HTML file you can't use it in the template below. In Svelte you can! This is powered by the compiler that turns your template into JavaScript expressions that are in the same scope as your variables.


What do you mean by "below"? I am not sure to view the use case you're thinking of.

BlueCutOfficial · 2026-01-16T15:59:25Z

src/posts/2025-11-06-why-choose-svelte.md

+In this talk Rich showcased the idea of moving the reactivity from the runtime into the language itself. A compiler! Just like in the good ol days a C compiler could help you write programs in an easier way by writing the ASSEMBLY code for you, Svelte can help you write websites in an easier way by writing Javascript code for you. Being a compiler is the first reason why I would choose Svelte and this has several implications:
+
+1. **New language constructs**: a compiler gives you a superpower...if you write a JavaScript variable in an HTML file you can't use it in the template below. In Svelte you can! This is powered by the compiler that turns your template into JavaScript expressions that are in the same scope as your variables.
+2. **Write efficient code by default**: many C developers could not write ASSEMBLY as efficiently as `gcc` can...the same is true for JavaScript. Sometimes it can be difficult to write efficient code but the Svelte compiler is written by a lot of very smart guys (and me) that knows how to write efficient JS for you.


Suggested change

2. **Write efficient code by default**: many C developers could not write ASSEMBLY as efficiently as `gcc` can...the same is true for JavaScript. Sometimes it can be difficult to write efficient code but the Svelte compiler is written by a lot of very smart guys (and me) that knows how to write efficient JS for you.

2. **Write efficient code by default**: many C developers could not write ASSEMBLY as efficiently as `gcc` can...the same is true for JavaScript. Sometimes it can be difficult to write efficient code but the Svelte compiler is written by a lot of very smart guys (and me) who know how to write efficient JS for you.

BlueCutOfficial · 2026-01-16T16:02:14Z

src/posts/2025-11-06-why-choose-svelte.md

+
+1. **New language constructs**: a compiler gives you a superpower...if you write a JavaScript variable in an HTML file you can't use it in the template below. In Svelte you can! This is powered by the compiler that turns your template into JavaScript expressions that are in the same scope as your variables.
+2. **Write efficient code by default**: many C developers could not write ASSEMBLY as efficiently as `gcc` can...the same is true for JavaScript. Sometimes it can be difficult to write efficient code but the Svelte compiler is written by a lot of very smart guys (and me) that knows how to write efficient JS for you.
+3. **Ability to change the runtime without changing the syntax**: another somewhat hidden feature of a compiler is that you can change the underlying runtime without having to change the syntax. We recently released Svelte 5 which, to be fair, was quite the syntax change...but you can still use your old component in Legacy mode. The same syntax, now use a completely different technology under the hood (compile time reactivity vs signal based reactivity). If tomorrow a brand new technique much better than signals is discovered Svelte can pretty much just rewrite the runtime without change the syntax.


Suggested change

3. **Ability to change the runtime without changing the syntax**: another somewhat hidden feature of a compiler is that you can change the underlying runtime without having to change the syntax. We recently released Svelte 5 which, to be fair, was quite the syntax change...but you can still use your old component in Legacy mode. The same syntax, now use a completely different technology under the hood (compile time reactivity vs signal based reactivity). If tomorrow a brand new technique much better than signals is discovered Svelte can pretty much just rewrite the runtime without change the syntax.

3. **Ability to change the runtime without changing the syntax**: another somewhat hidden feature of a compiler is that you can change the underlying runtime without having to change the syntax. We recently released Svelte 5 which, to be fair, was quite the syntax change... but you can still use your old component in Legacy mode. The same syntax now uses a completely different technology under the hood (compile time reactivity vs signal-based reactivity). If tomorrow a brand new technique much better than signals is discovered, Svelte can pretty much just rewrite the runtime without changing the syntax.

BlueCutOfficial · 2026-01-16T16:03:41Z

src/posts/2025-11-06-why-choose-svelte.md

+2. **Write efficient code by default**: many C developers could not write ASSEMBLY as efficiently as `gcc` can...the same is true for JavaScript. Sometimes it can be difficult to write efficient code but the Svelte compiler is written by a lot of very smart guys (and me) that knows how to write efficient JS for you.
+3. **Ability to change the runtime without changing the syntax**: another somewhat hidden feature of a compiler is that you can change the underlying runtime without having to change the syntax. We recently released Svelte 5 which, to be fair, was quite the syntax change...but you can still use your old component in Legacy mode. The same syntax, now use a completely different technology under the hood (compile time reactivity vs signal based reactivity). If tomorrow a brand new technique much better than signals is discovered Svelte can pretty much just rewrite the runtime without change the syntax.
+
+Another very good example of the power a compiler gives you is the brand new experimental `await` API: since the compiler does not abide to the rules of JavaScript you can use `await` in the middle of your script tag or component template and retain the signal based reactivity even after the `await` or we can `Promise.all` all your `await`'s in the template so that they don't waterfall.


Suggested change

Another very good example of the power a compiler gives you is the brand new experimental `await` API: since the compiler does not abide to the rules of JavaScript you can use `await` in the middle of your script tag or component template and retain the signal based reactivity even after the `await` or we can `Promise.all` all your `await`'s in the template so that they don't waterfall.

Another very good example of the power a compiler gives you is the brand new experimental `await` API: since the compiler does not abide to the rules of JavaScript you can use `await` in the middle of your script tag or component template and retain the signal based reactivity even after the `await`; or we can `Promise.all` all your `await`'s in the template so that they don't waterfall.

BlueCutOfficial · 2026-01-16T16:05:05Z

src/posts/2025-11-06-why-choose-svelte.md

+
+Another very good example of the power a compiler gives you is the brand new experimental `await` API: since the compiler does not abide to the rules of JavaScript you can use `await` in the middle of your script tag or component template and retain the signal based reactivity even after the `await` or we can `Promise.all` all your `await`'s in the template so that they don't waterfall.
+
+All of this is only possible because svelte it's a compiler which means it will allow users to write code in the most intuitive and logical way but still apply all the code changes required for it to work.


Suggested change

All of this is only possible because svelte it's a compiler which means it will allow users to write code in the most intuitive and logical way but still apply all the code changes required for it to work.

All of this is only possible because Svelte is a compiler, which means it will allow users to write code in the most intuitive and logical way, but still apply all the code changes required for it to work.

BlueCutOfficial · 2026-01-16T16:06:50Z

src/posts/2025-11-06-why-choose-svelte.md

+
+All of this is only possible because svelte it's a compiler which means it will allow users to write code in the most intuitive and logical way but still apply all the code changes required for it to work.
+
+Now, some people are scared about a compiler touching their code, but here's something that not a lot of people realize: basically every framework is using a compiler of some sort. React is doing a minimal conversion only transpiling JSX to `Rect.createElement`, Solid is doing a slightly heavier transformation that still only concerns the JSX part, Vue an even heavier compilation which still mostly touches the template part.


Since we're listing frameworks, this section could mention Ember.

BlueCutOfficial

Second part of the early review :)

BlueCutOfficial · 2026-01-20T08:55:28Z

src/posts/2025-11-06-why-choose-svelte.md

+
+## Optimize for the vibes
+
+Quoting Rich Harris [once again](https://github.com/sveltejs/svelte/discussions/10085), one of the tenets of Svelte is "Optimize for the vibes". Nowadays vibes took a bit of a negative turn with "Vibe coding" but the reality is that one of the design goals of Svelte is


Earlier the link was on the concept "Rethinking Reactivity" so I think it's better to keep the same pattern.

Suggested change

Quoting Rich Harris [once again](https://github.com/sveltejs/svelte/discussions/10085), one of the tenets of Svelte is "Optimize for the vibes". Nowadays vibes took a bit of a negative turn with "Vibe coding" but the reality is that one of the design goals of Svelte is

Quoting Rich Harris once again, one of the tenets of Svelte is "[Optimize for the vibes](https://github.com/sveltejs/svelte/discussions/10085)". Nowadays vibes took a bit of a negative turn with "Vibe coding" but the reality is that one of the design goals of Svelte is:

BlueCutOfficial · 2026-01-20T09:02:01Z

src/posts/2025-11-06-why-choose-svelte.md

+
+You might argue that vibes are subjective but the fact that the design decisions around the framework strive specifically to make the framework the most intuitive have consequences on the engineering side.
+
+![State of JS survey results showing Svelte consistently on top for interest](/assets/images/posts/2025-11-06-why-choose-svelte/state-of-js.png)


Could this alt text be displayed in the post as well?

BlueCutOfficial · 2026-01-20T09:03:46Z

src/posts/2025-11-06-why-choose-svelte.md

+
+![State of JS survey results showing Svelte consistently on top for interest](/assets/images/posts/2025-11-06-why-choose-svelte/state-of-js.png)
+
+Svelte is constantly the most interesting framework in online surveys: developers wants to learn Svelte!


If it's just an explanation of the image above, I wouldn't use the plural for survey, I would rather use "State of JS".

feat "Why I choose Svelte" blogpost

a1e9eb5

marcoow reviewed Oct 29, 2025

View reviewed changes

BlueCutOfficial reviewed Jan 16, 2026

View reviewed changes

BlueCutOfficial reviewed Jan 20, 2026

View reviewed changes


		At Mainmatter we are well aware of our choices. We choose Svelte and we advise our clients to do the same.

		Our clients, following good engineering practices don't just blindly trust us and asks: why? Why should I choose Svelte to develop my product?


		## Compiler

		I still remember the first time I've heard of Svelte: I was in the excruciating line to get my covid vaccine shot and I was entertaining myself with some YouTube video. I stumbled across this now-famous conference talk from Rich Harris: [Rethinking Reactivity](https://youtu.be/AdNJ3fydeao?si=sMn-kLIPESubUD14)


		In this talk Rich showcased the idea of moving the reactivity from the runtime into the language itself. A compiler! Just like in the good ol days a C compiler could help you write programs in an easier way by writing the ASSEMBLY code for you, Svelte can help you write websites in an easier way by writing Javascript code for you. Being a compiler is the first reason why I would choose Svelte and this has several implications:

		1. New language constructs: a compiler gives you a superpower...if you write a JavaScript variable in an HTML file you can't use it in the template below. In Svelte you can! This is powered by the compiler that turns your template into JavaScript expressions that are in the same scope as your variables.

	2. Write efficient code by default: many C developers could not write ASSEMBLY as efficiently as `gcc` can...the same is true for JavaScript. Sometimes it can be difficult to write efficient code but the Svelte compiler is written by a lot of very smart guys (and me) that knows how to write efficient JS for you.
	2. Write efficient code by default: many C developers could not write ASSEMBLY as efficiently as `gcc` can...the same is true for JavaScript. Sometimes it can be difficult to write efficient code but the Svelte compiler is written by a lot of very smart guys (and me) who know how to write efficient JS for you.

	Another very good example of the power a compiler gives you is the brand new experimental `await` API: since the compiler does not abide to the rules of JavaScript you can use `await` in the middle of your script tag or component template and retain the signal based reactivity even after the `await` or we can `Promise.all` all your `await`'s in the template so that they don't waterfall.
	Another very good example of the power a compiler gives you is the brand new experimental `await` API: since the compiler does not abide to the rules of JavaScript you can use `await` in the middle of your script tag or component template and retain the signal based reactivity even after the `await`; or we can `Promise.all` all your `await`'s in the template so that they don't waterfall.


		Another very good example of the power a compiler gives you is the brand new experimental `await` API: since the compiler does not abide to the rules of JavaScript you can use `await` in the middle of your script tag or component template and retain the signal based reactivity even after the `await` or we can `Promise.all` all your `await`'s in the template so that they don't waterfall.

		All of this is only possible because svelte it's a compiler which means it will allow users to write code in the most intuitive and logical way but still apply all the code changes required for it to work.


		All of this is only possible because svelte it's a compiler which means it will allow users to write code in the most intuitive and logical way but still apply all the code changes required for it to work.

		Now, some people are scared about a compiler touching their code, but here's something that not a lot of people realize: basically every framework is using a compiler of some sort. React is doing a minimal conversion only transpiling JSX to `Rect.createElement`, Solid is doing a slightly heavier transformation that still only concerns the JSX part, Vue an even heavier compilation which still mostly touches the template part.


		## Optimize for the vibes

		Quoting Rich Harris [once again](https://github.com/sveltejs/svelte/discussions/10085), one of the tenets of Svelte is "Optimize for the vibes". Nowadays vibes took a bit of a negative turn with "Vibe coding" but the reality is that one of the design goals of Svelte is

	Quoting Rich Harris [once again](https://github.com/sveltejs/svelte/discussions/10085), one of the tenets of Svelte is "Optimize for the vibes". Nowadays vibes took a bit of a negative turn with "Vibe coding" but the reality is that one of the design goals of Svelte is
	Quoting Rich Harris once again, one of the tenets of Svelte is "[Optimize for the vibes](https://github.com/sveltejs/svelte/discussions/10085)". Nowadays vibes took a bit of a negative turn with "Vibe coding" but the reality is that one of the design goals of Svelte is:


		You might argue that vibes are subjective but the fact that the design decisions around the framework strive specifically to make the framework the most intuitive have consequences on the engineering side.

		![State of JS survey results showing Svelte consistently on top for interest](/assets/images/posts/2025-11-06-why-choose-svelte/state-of-js.png)


		![State of JS survey results showing Svelte consistently on top for interest](/assets/images/posts/2025-11-06-why-choose-svelte/state-of-js.png)

		Svelte is constantly the most interesting framework in online surveys: developers wants to learn Svelte!

feat "Why I choose Svelte" blogpost #2804

Are you sure you want to change the base?

feat "Why I choose Svelte" blogpost #2804

Uh oh!

Conversation

paoloricciuti commented Oct 29, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

marcoow left a comment • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

BlueCutOfficial left a comment

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

BlueCutOfficial left a comment

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

4 participants

paoloricciuti commented Oct 29, 2025 •

edited

Loading

marcoow left a comment •

edited

Loading