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

In fs-extra module, you can use the openSync function to open a file and get a file descriptor. Here's how to use the openSync function:

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

try {
  const fd = fse.openSync('path/to/file', 'w');
  // do something with the file descriptor `fd`
} catch (err) {
  console.error(err);
}
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In the code above, the openSync function takes two arguments:

• The first argument is the path of the file you want to open.
• The second argument is the flag that indicates the mode in which the file is opened. The available flags are:
  • r: Opens file for reading. An exception occurs if the file does not exist.
  • r+: Opens file for reading and writing. An exception occurs if the file does not exist.
  • w: Opens file for writing. The file is created (if it does not exist) or truncated (if it exists).
  • w+: Opens file for reading and writing. The file is created (if it does not exist) or truncated (if it exists).
  • a: Opens file for appending. The file is created if it does not exist.
  • a+: Opens file for reading and appending. The file is created if it does not exist.

In the example above, the flag w is used, which means the file is opened for writing. Also, note that the function is called inside a try block and any errors are caught in the catch block.