Trying to declare SPIFFS function in a header file

1

I’ve used generic read and write examples that I find on the web, the issue is all the examples seem not to have a function declaration as they are used withing the small main body of the example.
I want to access these functions from other cpp modules so I need to include a declaration in a header file.
I cant seem to get the correct declaration format … help?
These are the two functions:

void writeFile(fs::FS &fs, const char * path, const char * message)

{}

String readFile(fs::FS &fs, const char * path)

{}
2

Create a file MyFileFunctions.h:

#ifndef MY_FILE_FUNCTIONS_H // Include guard
#define MY_FILE_FUNCTIONS_H

#include <FS.h>

void writeFile(fs::FS &fs, const char * path, const char * message);
String readFile(fs::FS &fs, const char * path);

#endif // Include guard

Create a file MyFileFunctions.cpp:

#include "MyFileFunctions.h

void writeFile(fs::FS &fs, const char * path, const char * message) { 
  // your code here
}

String readFile(fs::FS &fs, const char * path) {
  // your code here
}

Now you can #include "MyFileFunctions.h" from all your .cpp files and make use of the functions writeFile() and readFile().

There’s a good tutorial on youtube.