how to stop excuting next line in type script code example

Example 1: javascript wait 10 seconds

setTimeout(function () {
        // ...
    }, 10000);

// or

.then(() => {
  // ...
  ({ timeout: 10000 });
      });

Example 2: javascript wait 5 seconds

timeout(ms) { //pass a time in milliseconds to this function
    return new Promise(resolve => setTimeout(resolve, ms));
  }