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pachydermic | 10 years ago

It's maddening.

>The real painful part of the process is caused by everything around React, including the build tools.

Can't agree with that more. I really like the way react works. It just makes sense and doesn't get in your way very often.

BUT it's incredibly frustrating dealing with npm dependency hell. Especially if you really are concerned about security and don't just trust that "someone else has probably made sure this code is safe, right?"

I just want to use something for longer than 6 months :(

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kccqzy|10 years ago

You can perfectly use React without npm. Just download the prebuilt development and production versions of react and a simple <script src="..."> would do.

scribu|10 years ago

Ok, so what about JSX? Yes, you can write React templates without JSX, but not happily.

meshko|10 years ago

Right. React itself appears somewhat reasonable, except I am not entirely sure that putting entire app state into a huge clusterfuck of json is going to scale, but I am trying to reserve my judgement until I try it myself. And shadow DOM... sigh. It's a cool hack, but it feels like surrender to me.

Silhouette|10 years ago

FWIW, as an experienced developer whose instincts are probably quite similar to yours, I do recommend keeping an open mind with tools like React. They're different to a lot of more traditional tools, but like optimisations and profiling, they're best judged on their real world results rather than against dogma.

I'm not sure where you're coming from with the "huge clusterfuck of json" comment, but where the source data comes from is quite cleanly separated from how it's rendered using React, with one major caveat I'll come back to in a minute.

React itself is essentially a tool for rendering templates but with a declarative programming style, plus one fundamental performance optimisation that makes that declarative style fast enough to use in practice, plus a small number of hooks to integrate quite flexibly with other parts of your code and to allow for further performance optimisation if you need it.

Of course, there is no magic and there are always trade-offs. Most visibly, like any declarative system, sometimes the costs are significant and you do need to give it a hand to get acceptable performance. This is where the caveat I mentioned comes in, because you'll find a lot of projects using React also wind up using immutable data structures of one kind or another to store their model state. That lets you do fast comparisons based on identity rather than deep equality to see whether relevant parts of your underlying model data have changed, and thus lets you bypass the whole re-rendering process in areas of your UI where nothing interesting has happened. There are a handful of knock-on effects in practice that you have to deal with sometimes as well.

The upside, of course, is that you get much the same advantages as any other declarative programming style: your rendering logic tends to be simpler, more concise, more amenable to analysis, and less subject to surprising interactions and edge cases than more traditional, imperative rendering code tends to be, and all of these become disproportionately greater advantages as the complexity of the rendering and/or the underlying data model grow.