seek() equivalent in javascript/node.js?

Question

I m currently trying to read some files with fs module for node.js. Since it lack a tot of the function I m used to (fseek(), getline()...), I m creating another module to get them back. (a node.js copy of C stdio.h).

My simple question is:

Does seek() exist in some other name or do I need to remplement almost every function to have it?

Answer 1

In node.js the seek functionality is included in the read function. When you use the fs.read function, there is a parameter called position, that works as the seek position.

If what you want is to write to the file, the function fs.write also has the position parameter.

Check the docs here: https://nodejs.org/api/fs.html#fs_fs_read_fd_buffer_offset_length_position_callback