Is it possible to somehow write to a specific location in a Node.js file?

Question

JavaScript

Is it possible using fs.appendFile to append to a file in some specific place or, for example. between the necessary brackets, if there is, then tell me what it's called or give a link to read.

Answer 1

It is impossible to insert text, you can overwrite starting from a specific place.
If you need an insert inside the text, then you will have to overwrite everything starting from this place.

Answer 2

fs.write(fd, data[, position[, encoding]], callback)

https://nodejs.org/api/fs.html#fs_fs_write_fd_data...