How to save fetched data to a variable [duplicate]

I am trying to fetch some data from a remote API, filter it and later display it, when I console.log it I see that it is present, however, I can’t figure out how to save the data in a variable once fetched, how can I do it? Here is my attempt:

  let newData = null

   const fetchedData = fetch('https://jsonplaceholder.typicode.com/posts')
     .then((response) => response.json())
      .then((json) => newData(json));


const orderEmployees = newData.filter(employee => employee.jobTitle === 'Sales Representative');
const initialFilterState = { };

orderEmployees.forEach(employee => {
    if(employee.fullName === 'Wait Peperell') {
        initialFilterState[employee.id] = false;
    } else {
        initialFilterState[employee.id] = true;
    }
});