Comment on Are we ready for javascript without a build step on the front end in 2023?

Rooki@lemmy.world ⁨1⁩ ⁨year⁩ ago

• fbmac@lemmy.fbmac.net ⁨1⁩ ⁨year⁩ ago

  About the third point, the performance of your JavaScript code can be worse if it’s broken down into several small files rather than a single, bundled file. When a browser encounters a script tag linking to an external JavaScript file, it makes an HTTP request to fetch that file. This process occurs for each separate file. Each HTTP request involves time for network latency, server processing, and data transfer.

  I’m usually preferring typescript too, but this point got me curious. I’m guessing it wasn’t an honest point, almost everywhere I look people are still using a build step, and I didn’t notice any move in a different direction

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  • towerful@programming.dev ⁨1⁩ ⁨year⁩ ago

    Http/1.0 would require serial connections, and the “multiple files bad” absolutely applies. Bundling and minification into a single JS file was common, even required - and I would consider that a build step. Otherwise you are dealing with all your code in a single massive file.

    On http/1.1 browsers would open 6-8 concurrent connections to fetch files simultaneously. At this point, code splitting had benefits.

    Most webservers now run http/2 which can fetch multiple files at the same time over the same connection. I believe it is “virtually unlimited”. At which point code splitting has such little impact on the transport layer, that it is more perfomant than transferring and loading all the code.

    blog.vespa.ai/http2/ Has an more details as well as some load testing against http/1.0, http/1.1 and http/2

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  • YourAvgMortal@lemmy.world ⁨1⁩ ⁨year⁩ ago

    There is also a limit to the number of files the browser can download in parallel, so if many files have to be fetched, they have to wait until the previous downloads are finished. This slows down performance even more

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• atheken@programming.dev ⁨1⁩ ⁨year⁩ ago

  I think it’s a double negative: “against not using”

  As in, use a bundler.

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• MajorHavoc@lemmy.world ⁨1⁩ ⁨year⁩ ago

  The python community gaslighting the js community.

  As a Python developer, I am absolutely giving ya’all a hard time for your gross bolted-on JavaScript type solution. /s

  I do this primarily because I find it cathartic while I work with our gross bolted-on Python type solution. /s (mostly sarcasm, some truth here)

  I do this secondarily because I’m jealous that Typescript seems to be a good bit more mature than MyPy. (No sarcasm here. I really am jealous on this point.)

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  • cgtjsiwy@programming.dev ⁨1⁩ ⁨year⁩ ago

    I recommend Pyright over Mypy if you don’t mind it being owned by Microsoft. It has far fewer bugs, and if you do stumble on one, you don’t have to fix it yourself because Microsoft’s paid devs will fix it in a couple of working days (at least for the small bugs I’ve reported).

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    • MajorHavoc@lemmy.world ⁨1⁩ ⁨year⁩ ago

      Sweet. I’ll check it out. Thanks.

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  • Rooki@lemmy.world ⁨1⁩ ⁨year⁩ ago

    Yeah i programm a lot in python and typescript too. Even if i type something in python its still very weakly typed.

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• icesentry@programming.dev ⁨1⁩ ⁨year⁩ ago

  If you want type safety and no build step you do like svelte did and use jsdoc instead. You can run the typescript type checker on those annotations so if you care about not having a build step you can still have type safety.

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  • Rooki@lemmy.world ⁨1⁩ ⁨year⁩ ago

    its like js but with extra steps WHY NOT USING TS then?

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    • icesentry@programming.dev ⁨1⁩ ⁨year⁩ ago

      That’s litterally less step. It’s just a comment above a function. How is that more steps?

      I mean, don’t get me wrong, I don’t mind build step but this is objectively less steps.

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      • Rooki@lemmy.world ⁨1⁩ ⁨year⁩ ago

        In typescript you dont comment before there you see the variable name and that (should be enough) and the type is there…

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  • realharo@lemm.ee ⁨1⁩ ⁨year⁩ ago

    That sounds like spending a lot of extra effort just to avoid a little up-front effort.

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    • icesentry@programming.dev ⁨1⁩ ⁨year⁩ ago

      How is it extra effort? It’s just a comment instead of inline types. It’s not like going from no types to types everywhere.

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