*“Seamless interaction with NPM” not so seamless* This has been exactly my experience as well which is why I wrote an entirely new implementation for JS dependencies.
The detailed article can be found here https://code.thheller.com/blog/shadow-cljs/2017/09/15/js-dependencies-going-forward.html In short the implementation is much less aggressive and sacrifices some potential byte savings for greater compatibility with the JS ecosystem. I added js-nacl to my demo here: https://github.com/thheller/shadow-cljs-examples/blob/bb29828917080b143030ff557590c7c94b806ed7/browser/src/demo/app.cljs#L25-L29 The relevant bits from the config are https://github.com/thheller/shadow-cljs-examples/blob/bb29828917080b143030ff557590c7c94b806ed7/browser/shadow-cljs.edn#L26-L28 which basically just tell the compiler to use the window.crypto property when require("crypto") is used. I don't know if everything works since I know nothing about js-nacl. The Basic example from their README seems to work. This is still in pre-release mode but I could some more testers with "troublesome" JS dependencies. On Saturday, September 23, 2017 at 8:26:43 PM UTC+2, António Monteiro wrote: > > You also need to pass the `:install-deps true` compiler option from > 1.9.854 onwards. > > Some libraries are not consumable by Google Closure if they use constructs > like dynamic exporting and such. > > In any case, it looks like your problem is even another one: you're trying > to use a Node.js library in the browser. Obviously, `fs`, `path` and > `crypto` (which are Node.js builtins) are not going to be available in any > browser. > > On Friday, September 22, 2017 at 3:50:45 PM UTC-7, Krzysztof Jurewicz > wrote: >> >> Hello, >> >> I want to write a simple proof-of-concept (which may eventually evolve >> into something more serious) GUI wallet for a cryptocurrency that I’ve been >> writing. As desktop libraries/languages are either not very functional or >> not very portable, ClojureScript plus local storage in browser as a >> database looks like a good choice. To make it work, I need support for >> Ed25519 (a public-key signature system). >> >> Fortunately, there are implementations of Ed25519 compiled to JavaScript. >> js-nacl is a “pure-Javascript High-level API to Emscripten-compiled >> libsodium routines”, available also as a NPM package, and post at >> https://clojurescript.org/news/2017-07-12-clojurescript-is-not-an-island-integrating-node-modules >> >> advertises “Seamless interaction with NPM dependencies”. I tried to use it, >> roughly in the following way: >> >> ⒈ lein new reagent-frontend ercoin-wallet >> ⒉ Added :npm-deps {:js-nacl "1.2.2"} to :cljsbuild ⇨ :builds ⇨ app ⇨ >> :compiler in project.clj. >> ⒊ Added [js-nacl :as nacl] to :require in core.cljs >> >> However :npm-deps seemed to be ignored. Fixed this by downgrading >> ClojureScript from 1.9.908 to 1.9.671 (BTW, these versions are not tagged >> in the Git repository), but then there are warnings: >> >> WARNING: JSC_JS_MODULE_LOAD_WARNING. Failed to load module […] at […] >> >> , where modules are “fs”, “path” and “crypto”. >> >> spinningtopsofdo on IRC said that “From a quick skim for js-nacl it looks >> like it's using emscripten and doing some unique module loading that Google >> Closure isn't aware of ( >> https://github.com/tonyg/js-nacl/blob/master/lib/nacl_factory.js#L30-L39).” >> and “I think it's more the way js-nacl is using ASM / Emscripten and >> creating JavaScript Modules. :npm-deps covers the common JavaScript module >> patterns (e.g. CommonJs, Node, UMD) but there is still many edge cases out >> there”. >> >> I’ve tried also tweetnacl-js, but similarly there is a warning: >> >> “WARNING: JSC_JS_MODULE_LOAD_WARNING. Failed to load module "crypto" at >> […]”. >> >> What is the status of NPM interoperability then? Is it supposed to work >> as plug & play or does it require hacky knowledge in some cases? >> > -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojurescript+unsubscr...@googlegroups.com. To post to this group, send email to clojurescript@googlegroups.com. Visit this group at https://groups.google.com/group/clojurescript.
