find the root directory of a file in javascript

In Node.js, you can use the path module to manipulate file paths and get information about file paths. To find the root directory of a file in Node.js, you can use the path.parse() method to get the root directory of the file's path.

Here's an example:

index.tsx
const path = require('path');

const filePath = '/path/to/your/file.txt';
const rootDirectory = path.parse(filePath).root;

console.log('Root directory:', rootDirectory);
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This will output the root directory of the file path, such as / on Unix-like systems or C:\ on Windows.

If you're running this code in a browser environment, you won't be able to access the file system directly. However, you can still use the path.parse() method to parse a file path string and extract the root directory. The root directory for file paths in a browser is typically the root of the domain, indicated by a forward slash /.

index.tsx
const path = window.location.pathname.split('/')[1];
console.log('Root directory:', '/' + path);
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This will output the root directory of the domain, such as / or /myapp.