hook.js

Add pre or post hooks to your methods.

Install

npm install hook.js

How to use

var Hook = require('hook.js');

You can add hook feature to a CLASS:

function YourClass() {}
YourClass.prototype.func = function() {
    console.log('inner log');
};

// add hook feature
Hook.extend(YourClass.prototype);

Then you can hook func to a instance of YourClass:

var obj = new YourClass();

obj.pre('func', function() {
    console.log('pre log'); 
});

obj.post('func', function() {
    console.log('post log');
});

Now, func would print:

pre log
inner log
post log

Chaining & Cancellation

When add multi pre/post, normally we will do:

obj.pre(f1);
obj.pre(f2);

However, we can also write in a fast & beautiful way:

obj.pre(f1).pre(f2);

If you donot want invoke f2 for whatever reason, just return true in f1:

function f1() {
    if (your_condition) {
        // all later added `pre`s will not invoked
        return true;
    }
    // do your stuff
}

Contact

Email : [email protected]