Check user's permissions on file/dir in Nodejs

The 𝗳𝘀𝗣𝗿𝗼𝗺𝗶𝘀𝗲𝘀.𝗮𝗰𝗰𝗲𝘀𝘀 method tests a user's permissions for the file or directory specified by path.

This is the recommended method by 𝗡𝗼𝗱𝗲𝗷𝘀 and the replacement of 𝗳𝘀.𝗲𝘅𝗶𝘀𝘁𝘀, as it was deprecated.

Also it's usually not a good idea to use the sync version 𝗳𝘀.𝗲𝘅𝗶𝘀𝘁𝘀𝗦𝘆𝗻𝗰 since it blocks the main thread.

It's better than 𝗳𝘀.𝗲𝘅𝗶𝘀𝘁𝘀 as you can see; promisified and provides more modes than just checking if the file exists.

I enjoyed learning about this method, hopefully you did too!

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