node-sjsp - Simple JavaScript Profiler
What is it
This is a JavaScript profiler implemented in Node.js, inspired by sjsp, which is implemented in Haskell.
How to install
npm -g install node-sjsp
Usage
If you want to inject profiling code into something.js, run
sjsp something.js
and then sjsp generates something.sjsp.js in the same directory.
(you can use wildcard characters such that sjsp *.js)
Next, rewrite your HTML code using something.js like below.
<!-- <script src="something.js"></script> -->
<script src="something.sjsp.js"></script>Open the page with your browser and you can see profiles in the JavaScript console every 10 seconds. (you can change this interval by -i option)
========== SORT BY TIME ==========
time: 0.60sec count: 1777 something.js test1 (line: 7, col: 17) function test1(){
time: 0.60sec count: 1701 something.js test0 (line: 1, col: 17) function test0(){
time: 0.58sec count: 1601 something.js test4 (line: 25, col: 17) function test4(){
time: 0.57sec count: 1703 something.js test2 (line: 13, col: 17) function test2(){
time: 0.54sec count: 1632 something.js test3 (line: 19, col: 17) function test3(){
time: 0.53sec count: 1586 something.js test5 (line: 31, col: 17) function test5(){
========== SORT BY COUNT ==========
time: 0.60sec count: 1777 something.js test1 (line: 7, col: 17) function test1(){
time: 0.57sec count: 1703 something.js test2 (line: 13, col: 17) function test2(){
time: 0.60sec count: 1701 something.js test0 (line: 1, col: 17) function test0(){
time: 0.54sec count: 1632 something.js test3 (line: 19, col: 17) function test3(){
time: 0.58sec count: 1601 something.js test4 (line: 25, col: 17) function test4(){
For details, see original document
How it works
Limitation
This profiling is available for browser only now.
Author
45deg (Twitter)
LICENSE
MIT