Aspectlee

Aspectlee is an Aspect oriented programming library for browser and/or node applications

Installation

npm install --save aspectlee

Or for browser:

<script src="https://unpkg.com/aspectlee/dist/index.js"></script>

Usage

Node

var aop = require('aspectlee');

function foo() {

    console.log('foo created.');

    this.bar = function (a, b, c) {
        console.log('Running bar function...');
        return 'Returned by bar';
    }
}

var fooObj = new foo();

aop.Aspectlee(fooObj);

fooObj.bar('I','Am','Bar');

Or with custom print function:

aop.Aspectlee(fooObj, function(context){

    if (context.state === aop.State.BEFORE){
        console.log('Function ' + context.name + ' now running');
    } else if (context.state === aop.State.AFTER){
        console.log('Function ' + context.name + ' running ended with result ' + context.result );
    }
});

ES6

With default output print function:

import {Aspectlee} from 'aspectlee';

class foo {
    constructor() {
        console.log('foo class created');
    }

    bar(a, b, c) {
        
        console.log('Running bar function...');        
        return 'Returned by bar';
    }
}


const fooObj = new foo();

Aspectlee(fooObj);

foo.bar('I','Am','Bar');

/*

output:

foo class created
Executing function 'bar' with parameters: I,Am,Bar.
Running bar function...
Finished executing 'bar' with parameters: I,Am,Bar. Result: Returned by bar

*/

With custom print function:

import {Aspectlee, State} from 'aspectlee';

class foo {
    constructor() {
        console.log('foo class created');
    }

    bar(a, b, c) {
        
        console.log('Running bar function...');        
        return 'Returned by bar';
    }
}


const fooObj = new foo();

Aspectlee(fooObj, context => {
    if (context.state === State.BEFORE){
        console.log(`Function ${context.name} now running`);
    } else if (context.state === State.AFTER){
        console.log(`Function ${context.name} running ended with result ${context.result}`);
    }
});

foo.bar('I','Am','Bar');

/* output:

foo class created
Function bar now running
Running bar function...
Function bar running ended with result Returned by bar

*/