JSON Redactor

Recursively clean a list of arguments before sending them out somewhere.

This is a standard npm module, so you'll install it via

npm install --save json-redactor

require it like:

var jsonRedactor = require('json-redactor')({
  watchKeys: // array of regex values, default is an empty array
  error: // string, default is '-'
})

watchKeys is the list of things to watch for, only accepts regex

error is the error message to replace strings that match the watchKeys with.

test it by:

npm test

use it like:

as a go-between, example using bole

var bole = require('bole');
var jsonRedactor = require('./logFilter.js')({
    watchKeys : [ /firstName/gi , /lastName/gi , /phone/gi , /^_.*/ ],
    error: 'Dont Log sensitive data'
  });
 
var b = bole(name)
var pre = {
  error : function(){
    b.error.apply(null,_.values(jsonRedactor.apply(null,arguments)))
  },
  info :function(){
    b.info.apply(null,_.values(jsonRedactor.apply(null,arguments)))
  },
  warn : function(){
    b.warn.apply(null,_.values(jsonRedactor.apply(null,arguments)))
  },
  debug : function(){
    b.debug.apply(null,_.values(jsonRedactor.apply(null,arguments)))
  }
}
 
return pre

standard usage

jsonRedactor()

Some examples

var jsonRedactor = require('json-redactor')({
    watchKeys:[/error/gi]
  })
console.log(jsonRedactor('this is an error'))
// logs {'0':'-'}

The outer object is because we copy and return the arguments object, this way we can parse through an arbitrary amount of args. The inner string got redacted because our regex matches error in the clean function, and the argument was a string

var jsonRedactor = require('json-redactor')({
    watchKeys:[/string/gi],
    error: 'redacted!'
  })
console.log(jsonRedactor({string:'test',test2:'string'}))
// logs {'0':{test2:'redacted!'}}

In the inner object, key string matches the regex so it gets stripped out. The value of key test2 gets replaced with redacted! because that is what our error message is set to (and the value matches the regex)