dejavu-optimizer

dejavu optimizer

The dejavu optimizer analyzes your code, making dejavu usages faster.
Benchmarks: jsperf

What it does?

• Improves $super(), $self and $static usage
• Removes the need for wrappers, improving performance by a great margin
• Removes abstract functions from abstract classes
• Removes functions from interfaces
• Removes all $locked and $member() because they are not used in the loose version

Usage

Node script

There's a simple nodejs script located in the bin folder. If you are optimizing your code for nodejs then pass the --closure option. This will boost the performance when running code in v8. Please look at the jsperf results to see the difference in the different browsers.

Example usage:

node optimizer < file_in.js > file_out.js node optimizer --closure < file_in.js > file_out.closure.js

Programmatic

To use the optimizer programatically, please check bin/optimizer for an example.

Tasks

dejavu comes with an automaton and grunt task.

Sample usage of automaton:

var dejavuOptimizer = require('dejavu/tasks/optimizer.autofile');

module.exports = function (task) {
    task.do(dejavuOptimizer, {
        description: 'Optimize myfile',
        options: {
            closure: true, // defaults to false
            files: {
                'src/myfile.js': 'dst/myfile.opt.js'
            }
        }
    });
}

Sample usage of grunt:

grunt.loadNpmTasks('dejavu');

grunt.initConfig({
    dejavuopt: {
        sometarget: {
            closure: true, // defaults to false
            files: {
                'dst/myfile.opt.js': 'src/myfile.js'
            }
        }
    }
});

License

Released under the MIT License.

Changelog

0.4.2 - 2014-01-24

• Fix $super references not being replaced correctly.