object-from-search-params

This package is super tiny and parses a query params string into Javascript primitive types (i.e. numbers, booleans, arrays, etc.). It does not require a schema to do the parsing as the types are inferred using JSON.parse(). It's meant to be a super tiny package where size is critical.

Installation

npm install object-from-search-params

Usage

import objectFromSearchParams from 'object-from-search-params';

// use directly with a string
const myObject = objectFromSearchParams('?aNum=15&aBool=true&aString=hello');



const url = new URL('https://example.com?aNum=15&aBool=true&aString=hello');
// use with a searchParams object as well
const myObject = objectFromSearchParams(url.searchParams);

Why this package?

There are amazing javascript APIs out there like URLSearchParams and Object.Entries. When you combine them you can parse a query parameter string into an object, BUT the problem is that all the values are parsed as strings since URLSearchParams keeps the string types on all values.

For Example, this code

Object.fromEntries(new URLSearchParams('?aNum=15&aBool=true&aString=hello&aNull=null&anArray=1&anArray=two&anArray=3.0')) 

Produces an object like this:

{
    aBool: "true",
    aNull: "null",
    aNum: "15",
    aString: "hello",
    anArray: "3.0"
}

There are 2 problems with the code above.

Problem 1, all the values are strings, when you probably want actual javascript values.

Problem 2, the anArray property only chose the last value in the query param, but what we want is for this to be a javascript array with all the values in the query parms.

This package exists to solve these 2 problems listed above.

For example, this code

import objectFromSearchParams from 'object-from-search-params';

objectFromSearchParams('?aNum=15&aBool=true&aString=hello&aNull=null&anArray=1&anArray=two&anArray=3.0')

Would produce this object

{
    aNum: 15,
    aBool: true,
    aString: 'hello',
    aNull: null,
    anArray: [1, 'two', 3.0]
}