Gleams use expression
It looks elegant indeed! What I don’t like with all those sugars, though, is that it makes you focus on the happy path and often leads to overall bad error handling. I’ve never been a fan of ocaml let...
View ArticleGleams use expression
An elegant way to solve the problem in rescript actually already exists, just use exceptions instead of result / option monads and use reanalyze to track exceptions statically.
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Gleams use expression
While chaining promises (without async/await) there is also the focus on the happy path. Don’t know if you handle it in another way? let result = promise->then()->then()->then()->catch()...
View ArticleWeird error with module type
Although mxthevs offered a valid solution, I’d like to add a more thorough explanation because I get this question very often (especially from rescript beginners). The difference between the two...
View ArticleGleams use expression
I use pattern matching on awaits, whenever possible, if I use promises. This way I’m forced to thing / handle errors as well. let f = async x => switch await x() { | result =>...
View ArticleQ: Just so we're clear, ALL declaration of imported JS modules must be...
It would be amazing to have a tool to auto-generate the bindings from typescript definition files.
View Article@rescript/core: dependency or peerDependency?
It depends, just same as normal JS packages. Generally it should be peerDeps if you publish a library, otherwise put into dependency if you build app. More specifically, peerDeps describes...
View ArticleHow do you writing bindings today?
I do both. no problem there OCaml style modeling is still useful, so I won’t abandon it
View ArticleGentype: Typescript to Rescript types
Wasn’t able to thoroughly test it myself yet, but the ReScript branch has been merged and there is a ReScript guide: https://github.com/ocsigen/ts2ocaml/blob/main/docs/rescript.md
View ArticleCompile-step frontend frameworks and rescript
Vue integration is actually possible, since the lang attribute of <script> tag in SFC can receive anything. Therefore if we create a Vite plugin to transform ReScript files on demand, it would...
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Recently came to ReScript? Give us your thoughts on error messages!
Here’s one that just caught me off guard for like half an hour. I have a manually curried function and couldn’t understand why my pipe wasn’t working let decode = decoder => data =>...
View ArticleHow to convert record to object?
I met this problem while dealing with GraphQL + Apollo. There are multiple queries that return structurally equivalent yet nominally different types. I want to handle the these polymorphically (in...
View ArticleUnnecessarily strong type constraints with polymorphic variants (when using...
The following works (ReScript Playground): let f = v => { let x = ref(#b) x := v } let g = () => { let x = #a switch x { | #a => f(x) } } but the equivalent code using React.useState does not...
View ArticleDebug mode with rescript 11.0
Does the debug mode flag -bs-g work with rescript 11.0? I’m getting some weird errors when I use it. Fatal error: exception File "jscomp/core/js_dump.ml", line 828, characters 29-35: Assertion failed
View ArticleDebug mode with rescript 11.0
I was hoping to print a better type format in the console logs
View ArticleDebug mode with rescript 11.0
I have removed the files that were causing the errors but I still can’t get a nice type format in the console. I have enabled Custom formatters in Google Chrome devtools.
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