decorator-performance

A ES6 decorator for logging out performance.

Should also work in frontend code if you use babel with es7.decorators enabled.

Install

$ npm install --save decorator-performance

API

• @performance => Will log out the performance using console.time (works good in browsers)
• @performance() => Will log out with the standard template (<%= name %> tok <%= time %> ms)
• @performance(string) => Will log out with the the input string as template. (Available variables are: <%= name %> and <%= time %>)

Example

// ES2016 style
import {performance} from 'decorator-performance'

// CommonJS style
let performance = require('decorator-performance').performance;

class SuperNiceClass {
    @performance       //use this decorator
    @performance()     //or this decorator
    @performance('Customized output!!! TIME = <%= time %> ms NAME = <%= name %>') //or this decorator
        bar(a) {
        let x = 0;
        for ( let i = 1; i < 100000000; i++){
            x += i;
        }
        return x;
    }
}
new SuperNiceClass().bar(10)

Output

Customized output!!! TIME = 102.343 ms NAME = bar
bar tok 102.343 ms
bar: 102ms

Note

You need to run babel with the option 'es7.decorators' enabled.

License

MIT © Christian Martin

dependencies

decorator-wrap