PerfTime is a simple utility for measuring function execution time
It works by wrapping the performance.now() method and gives you a simple to use API for quick debugging purposes
npm i @tzwel/perftime
Assign perfTime to a variable and pass an options object containing the function. If omitted, function name is set to unnamed function
const perfTime = require('@tzwel/perftime')
function someRandomFunction() {
const measurement = new perfTime({function: someRandomFunction})
measurement.start()
// function code to be measured
measurement.stop()
// => Executing 'someRandomFunction' took 0.006400000000000735ms
}
someRandomFunction()You can measure a function multiple times and then get its average execution time
It can be done inside the function like this (useful when you want to limit the scope of the measurement):
function someRandomFunction() {
const measurement = new perfTime({function: someRandomFunction})
for (let index = 0; index < 15; index++) { // a for loop that executes code multiple times
measurement.start()
// function code to be measured goes here
measurement.stop()
}
console.log(measurement.averageTime); // log the average time of execution
}Or by wrapping the function call in a for loop
const measurement = new perfTime({function: someRandomFunction})
for (let index = 0; index < 15; index++) {
measurement.start()
someRandomFunction()
measurement.stop()
}
console.log(measurement.averageTime);PerfTime subtracts 0.0192 from the result by default. To disable this behavior, set compensation to 0:
const measurement = new perfTime({compensation: 0})