Proxy.js
A collection of useful JavaScript Proxy utilities.
Installation
npm install @soulofmischief/proxy.js
Methods
after
after( model, callback = () => null, passValue = false )
Execute a callback after each property access or assignment.
Usage
import { after } from '@soulofmischief/proxy.js'
// Log each property access.
const proxy = after( obj, console.log, true )
proxy.val
// undefined
Parameters
model object
Object to proxy.
callback function
Callback to execute after each access.
passValue boolean
Pass the computed value to the callback.
before
before( model, callback = () => null, passValue = false )
Execute a callback before each property access or assignment.
Usage
import { before } from '@soulofmischief/proxy.js'
// Log each property access.
const proxy = before( obj, console.log, true )
proxy.val = 'test'
// 'test'
Parameters
model object
Object to proxy.
callback function
Callback to execute before each access.
passValue boolean
Pass the provided value to the callback.
log
log( model, { exclude: '', include: '', logger: console.log })
Log each property access or assignment.
Usage
import { log } from '@soulofmischief/proxy.js'
// Log each property access.
const proxy = log( obj )
proxy.val
// GET val
// undefined
Parameters
model object
Object to log.
options.include string|Array<string>
Access types to include.
options.exclude string|Array<string>
Access types to exclude.
options.logger function
Logging callback.
store
store[ key ] = val
JSON-serialized shallow store using localStorage.
Usage
import { store } from '@soulofmischief/proxy.js'
// Store a value.
store.test = { key: 'value' }
// Retrieve value.
console.log( store.test )
// { key: 'value' }