cv-decorators

List of ES6 decorators

Streamify

Creates a stream of calls to any method of a class. Dependency of RxJS

``javascript
import {streamify} from 'cv-decorators';

@streamify('greeting', 'greetingAsync')
class Person {
greeting(name){
return Hi ${name};
}

greetingAsync(name){
return new Promise( resolve => setTimeout(resolve, 100, Hi ${name}) );
}
}

const person = new Person();

person.$.greeting.subscribe(({params, result}) => {
console.log(method was called with ${params} and response was "${result}"); // => method was called with ['Carlos'] and response was "Hi Carlos"
});

person.$.greetingAsync.subscribe(({params, result}) => {
console.log(method was called with ${params} and response was "${result}"); // => method was called with ['Carlos'] and response was "Hi Carlos"
});

person.greeting('Carlos');
person.greetingAsync('Carlos');
`


Cache

Creates a cache of calls to any method of a class.

`javascript
import {cache} from 'cv-decorators';

class Dummy {
@cache()
syncRndNumber (num) { return Math.random() }
}
const dummy = new Dummy()

const firstCall = dummy.syncRndNumber()
const secondCall = dummy.syncRndNumber()

// => firstCall === secondCall
`
Dump cache to console if setting to truthy '__dumpCache__' key in localStorage:

`javascript
localStorage.__dumpCache__ = true
`

By default the TTL for the keys in the cache is 500ms, but it can be changed with

`javascript
import {cache} from 'cv-decorators';

class Dummy {
@cache({ttl: 2000})
syncRndNumber (num) { return Math.random() }
}
`

For this method the cache is 2 seconds

It is possible to set TTL using a string with the format ttl: 'XXX [second|seconds|minute|minutes|hour|hours]',
thus, avoiding writing very large integers
Example

$3

* ttl (500ms): Time to life for each cache register

* server (false): If the cache will be used in a NodeJS env. Be careful that could break your server

* algorithm ('lru'): Which algorithm will be used to discard register in the cache when will be full. Can be lru | lfu

* trackTo: Is you pass a host, each 20secds will be send a ping to ${trackTo}/__tracking/cache/event/stats with a header x-payload` where there is a object with the stats of hit, miss, env and algorithm

* size (100): How many register can be in the cache before start to remove register.