how to use the chmod function from fs-extra in javascript

You can use the chmod() function from the fs-extra package to modify file permissions on a file or directory in Node.js.

Here's an example of how to use the chmod() function:

index.tsx
const fs = require('fs-extra');

const filePath = '/path/to/file.txt';
const newPermissions = 0o775; // set permissions to -rwxrwxr-x

fs.chmod(filePath, newPermissions, (err) => {
  if (err) {
    console.error(err);
  } else {
    console.log('File permissions updated');
  }
});
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In this example, we're changing the file permissions of file.txt to 775 (read/write/execute for the owner and group, read/execute for other users).

Note that the newPermissions parameter is an octal number that represents the new permission bits for the file. In this example, we're using 0o775 instead of an integer literal 775. The 0o prefix tells JavaScript to interpret the number as an octal value.