Compiling JavaScript to C source code

[jarble]

Since NectarJS is able to compile JavaScript into WebAssembly, it may be possible to compile JavaScript into C source code using a compiler like wasmdec. Does NectarJS have this feature yet?

[adrien-thierry]

You can directly compile JS to c/c++ with NectarJS

[jarble]

Does the documentation explain how to compile JavaScript to C or C++?

[adrien-thierry]

Not yet,

you have to use njs --gen your_file.js in the core/nativejs folder

[votecoffee]

Where is the core/nativejs folder?
Compiling from the js file directory throws the following exception:

/usr/local/lib/node_modules/nectarjs/node_modules/eslint/lib/cli-engine/cli-engine.js:406
} catch {
^

SyntaxError: Unexpected token {
at createScript (vm.js:80:10)
at Object.runInThisContext (vm.js:139:10)
at Module._compile (module.js:616:28)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object. (/usr/local/lib/node_modules/nectarjs/node_modules/eslint/lib/cli-engine/index.js:3:23)

[adrien-thierry]

There is no more core/nativejs, did you update NectarJS ?

[votecoffee]

I recently installed it. I was looking for a transpiler to convert javascript to c++. I'm guessing that's no longer a supported feature then?

[adrien-thierry]

Compiling to c++ is one of the main feature, so it's supported

Did you install it with npm ?

npm i -g nectarjs

[DuncanMacWeb]

Hi @adrien-thierry, I have installed NectarJS globally using npm i -g nectarjs:

$ nectar --version
NectarJS v0.7.99

What is the correct way to generate C/C++ output from NectarJS? Many thanks!

[adrien-thierry]

Hi @DuncanMacWeb !

Thank you for your interest in NectarJS, to generate c++, use the --generate flag

To generate the code in a specific path, use --tmp with a path : --tmp mypath

[adrien-thierry]

To just compile the app, use njs myapp.js

[DuncanMacWeb]

Got it, thanks!