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

To use the watch function from the fs-extra module in JavaScript, you first need to install the module:

npm install fs-extra
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Then, you can use the watch function as follows:

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

const options = {
  persistent: true, // keep watching
  recursive: true, // watch subdirectories too
  encoding: 'utf-8' // specify the file encoding
}

fs.watch('/path/to/directory', options, (eventType, filename) => {
  console.log(`${filename} ${eventType}`);
  // do something when the file changes
});
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The watch function takes three arguments:

1. The directory path to watch for changes
2. An options object for customizing the behavior of watch
3. A callback function that will be called whenever a file changes within the specified directory.

The eventType parameter of the callback function indicates the type of change that occurred, such as "rename" or "change". The filename parameter of the callback function is the name of the file that was changed.

Using the fs-extra watch function is a great way to monitor changes to files in your file system and react to them in real-time.