A profiling counter for Node.js.
npm install dannynemer/countervar counter = require('counter')
for (var i = 0; i < 100; ++i) {
if (i % 2 === 0) counter.count('even')
}
counter.end('even')
// => Resets the count for 'even' to 0
// => Prints "even: 50"
for (var i = 0; i < 99; ++i) {
counter.count(i % 2 === 0 ? 'even' : 'odd')
if (i > 100) counter.count('never reached')
}
counter.endAll()
// => Resets all counts to 0
// => Prints "even: 50 (50.5%)
// odd: 50 (49.5%)"Increments the invocation count for label. Use counter.end(label) or counter.endAll() to print the counter's value. This is useful to profile the number of times a section of code is reached.
label(string): The counter identifier.
for (var i = 0; i < 100; ++i) {
if (i % 2 === 0) counter.count('even')
}
counter.end('even')
// => Resets the count for 'even' to 0
// => Prints "even: 50"Prints (and resets the value of) the number of counter.count(label) invocations.
label(string): The counter identifier.
Prints (and resets the values of) the counter value of each label recorded by counter.count(), and each counter's value as a percentage of all counters.
Does not print counters that are never reached (having not initialized their keys). Prints counts in order of decreasing value.
for (var i = 0; i < 99; ++i) {
counter.count(i % 2 === 0 ? 'even' : 'odd')
}
counter.endAll()
// => Prints counts for all labels and resets all to 0Output:
