parse-strings-in-object

Parse Strings in JS Object

JavaScript is notoriously loose with typing, so this can get you into trouble. For example, you might get configuration or JSON including strings as values:

'isMaster': 'true',
myNumber: '0'

So, now:

console.log(isMaster); // "true": as expected, but actually string
console.log(isMaster==true, isMaster===true); // "false false": oops
console.log(myNumber); // "0": as expected, but actually a string
console.log(typeof myNumber, myNumber==0, myNumber===0); // "string true false": hmmm
console.log(!myNumber); // "true": this is getting confusing

This simple module reads your JS Object recursively and converts string values to their proper types.

Usage

Install from npm:

npm install parse-strings-in-object

There is only one argument to pass to the module - a valid JavaScript object.

var niceParsedObject = require('parse-strings-in-object')(yourOriginalObject)

Example

const before = {
    active: true,
    anInt: 1,
    aFloat: 1.1,
    justAString: 'hello',
    ipAddress: '192.168.1.101'
}

let after = require("parse-strings-in-object")(before);
console.log(JSON.stringify(after, null, 4), typeof after.aFloat, 'and also a', typeof after.anInt);

The output will be:

{
    active: true,
    anInt: 1,
    aFloat: 1.1,
    justAString: 'hello',
    ipAddress: '192.168.1.101'
}
number
and also a
number

Notice that both ints and floats are converted correctly to the single number type, and a number-like string such as an IP address is left alone (stays a string).

Development and testing

Feel free to improve the module! All pull requests shall be considered.

After npm install you can run unit tests with Mocha like this:

npm run test