Check if a file or directory exists in a given path.
Because fs.exists and fs.existsSync will be are deprecated and in some cases we still need them!
fs.exists()is an anachronism and exists only for historical reasons. There should almost never be a reason to use it in your own code. In particular, checking if a file exists before opening it is an anti-pattern that leaves you vulnerable to race conditions: another process may remove the file between the calls tofs.exists()andfs.open(). Just open the file and handle the error when it's not there.fs.exists()will be deprecated. (Source, emphasis added)
# Using npm
npm install --save is-there
# Using yarn
yarn add is-thereconst IsThere = require("is-there");
// Sync
console.log(IsThere(`${__dirname}/contents/file`))
// => true
console.log(IsThere.directory(`${__dirname}/contents/dir`))
// Callback
IsThere.file(`${__dirname}/contents/not_found`, exists => {
console.log(exists)
// => false
})
// Promises
IsThere.promises.directory(`${__dirname}/contents/dir`).then(exists => {
console.log(exists)
// => true
}).catch(console.error)There are few ways to get help:
- Please post questions on Stack Overflow. You can open issues with questions, as long you add a link to your Stack Overflow question.
- For bug reports and feature requests, open issues. π
- For direct and quick help, you can use Codementor. π
Checks if a file or directory exists on given path. Use without the new keyword.
- String
path: The path to the file or directory. - Function
callback: The callback function called with a boolean value representing if the file or directory exists. If this parameter is not a function, the function will run synchronously and return the value.
- isThere|Boolean The
isTherefunction if thecallbackparameter was provided, otherwise a boolean value indicating if the file/directory exists or not.
Checks if the path exists and it is a directory.
- String
path: The path to the directory. - Function
callback: The callback function called with a boolean value representing if the directory exists. If this parameter is not a function, the function will run synchronously and return the value.
- isThere|Boolean The
isTherefunction if thecallbackparameter was provided, otherwise a boolean value indicating if the directory exists or not.
Check if the path exists and it is a file.
- String
path: The path to the file. - Function
callback: The callback function called with a boolean value representing if the file exists. If this parameter is not a function, the function will run synchronously and return the value.
- isThere|Boolean The
isTherefunction if thecallbackparameter was provided, otherwise a boolean value indicating if the file exists or not.
The promises interface.
It exports the following methods:
isThere.promises.existsisThere.promises.fileisThere.promises.directory
Have an idea? Found a bug? See how to contribute.
I open-source almost everything I can, and I try to reply to everyone needing help using these projects. Obviously, this takes time. You can integrate and use these projects in your applications for free! You can even change the source code and redistribute (even resell it).
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