I have a library written in Nim and I want to use it in ClojureScript since the
lib written in ClojureScript is kind of slow. So I run
nim js -o:js-lib/index.js ./src/cirruParser.nim
Run
and got a JavaScript file. Then I added exports.parseCirru = parseCirru at the
end of the file for exporting the function parseCirru. It turned out to be
faster than my ClojureScript version(despite that I need the data structure in
ClojureScript).
I looked in to the generated code and saw something like:
framePtr = F;
F.line = 34;
var e_14207 = null;
F.line = 37;
e_14207 = {m_type: NTI3850, parent: null, name: null,
message: null, trace: null, raiseId: 0, up: null};
F.line = 38;
e_14207.message = nimCopy(null, message_14066, NTI138);
F.line = 39;
raiseException(e_14207, "AssertionError");
framePtr = F.prev;
Run
I got a question, is there something like "optimization level" in compiling to
JavaScript? I'm not sure what these code means, it's like writing to F.line
just with different numbers.
Also strange to me that I don't get exports.foo = funcFoo by default as I added
{.exports.} since it's how most of us using JavaScript modules today.
Anything I need to know beyond tips listed on [Nim Backend
Integration]([https://nim-lang.org/docs/backends.html#backends-the-javascript-target)](https://nim-lang.org/docs/backends.html#backends-the-javascript-target\))?
