vanilla-aop

Vanilla AOP for Node.js

Basic usage

const factory = require('vanilla-aop').decorator
const before = function()
const decorate = factory()const logs = [];
const before = function(x, y, done) {
  setTimeout(function() {
      logs.push('BEFORE ' + x + ', ' + y)
      done()
  }, 5)
}
const after = function(x, y, result, done) {
  setTimeout(function() {
      logs.push('AFTER ' + x + ', ' + y + ', ' + result)
      done()
  }, 5)
}
const sum = function(x, y, done) {
  const result = (x + y)
  logs.push('SUM ' + x + ', ' + y + ', ' + result)
  done(result)
}

const decorate = factory({ before: before, after: after })
const decoratedSum = decorate(sum)

decoratedSum(11, 19, function(result) {
  logs.push('THE END ' + result)
  // logs.length === 0
  // logs[0] === 'BEFORE 11, 19'
  // logs[1] === 'SUM 11, 19, 30'
  // logs[1] === 'AFTER 11, 19, 30'
  // logs[2] === 'THE END 30'
})