How to measure the execution time of a promise?

Question

I\'m trying to write a function that measures the execution time of another function:

export class Profiler {
    public measureSyncFunc(fn: () => any): P         


        

Answer 1

Here's a simple wrapper function I wrote. It returns a Promise (via the async keyword), and so you can just call it with your promise. I added the time value as a property to the response. If you cannot have that value in the response, then you would need to remove it afterwards.

const stopwatchWrapper = async (promise) => {
  const startTime = Date.now()
  const resp = await promise
  resp.executionTime = Date.now() - startTime
  return resp
}

const axiosPromise = stopwatchWrapper(axios(reqSelected))
const response = await axiosPromise
console.log(response.executionTime)