Need to hook to function of the Web API, is it possible?

I'm trying to hook into a function that comes with the File System Access API.

For example when the web site used the File System Access API as shown in below.

// store a reference to our file handle
let fileHandle;

async function getFile() {
  // open file picker
  [fileHandle] = await window.showOpenFilePicker();

  if (fileHandle.type === 'file') {
    // run file code
  } else if (fileHandle.type === 'directory')
    // run directory code
  }

}

It is possible to hook Web APIs with JavaScript? I mean how can I stop process of the web site when it used this API?