Adding a function call from a C library into my custom npm module

I have a .exe file from a C library that my package depends on. Currently, my package functions properly only if the user has this command included in their PATH. Is there a way to automatically install this command from the C library when the user installs my package via NPM? I attempted to include the .exe file in the bin section of my package.json, and after installing my package globally, the command was indeed available in the prompt. However, it is not accessible for the child_process.spawn function. Whenever my code tries to use it, I encounter the following error:

Error: spawn fpcalc ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
at processTicksAndRejections (internal/process/task_queues.js:84:21)
Emitted 'error' event on ChildProcess instance at:
at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)
at onErrorNT (internal/child_process.js:469:16)
at processTicksAndRejections  (internal/process/task_queues.js:84:21) {
errno: 'ENOENT',
code: 'ENOENT',
syscall: 'spawn fpcalc',
path: 'fpcalc',

// EDIT

In essence, I need to configure a PATH variable during my package's installation process so that the "fpcalc" command can be accessed by the child_process.

node.jsnpmpackagepackage.jsonnpm-package

Answer №1

After troubleshooting my issues, I finally found a solution that worked for me. Surprisingly, including a .exe file in the package.json file did the trick! The problem actually stemmed from using the method child_process.spawn; for some reason, it wasn't executing external commands as intended. Switching to child_process.exec resolved the issue.

// Updated package.json
{
 "bin": {
      "your-command": "file_path.exe"
 }
}

In other news, I developed a library that leverages a C library for music recognition. Check it out here.

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