javascript - Can stat() access() open() readFile() in node.js determine whether a file exists?

Question

My understanding is:
stat() is to obtain file information;
access() tests whether the file is available;
open() opens the file;
readFile() reads the file;
Then I can determine whether the file is available when using readFile(), but I see that some people write static resource servers first using the open() method. Isn’t this redundant? Are there any other considerations here? ?

Answer 1

If you simply determine whether the file exists, it is recommended to use the fs.existsSync() method directly, refer to the official API

Answer 2

Stat is to obtain file information and is usually not used to determine whether the file is available.

Access is best suited to determine whether a file is available.

There is a big difference between open and readFile. Open can read and write. It can also create a file or directly fail based on whether the file exists.