objFilter

Implementation of the array-like function filter() for regular javascript objects. With this tool it's possible to create a new object containing only a subset of the given object key-value pairs without using a for loop. It behaves in the same way of the native array filter function.

Getting Started

Installing

npm install obj-functions

Usage

Import objFilter function from the package:

import { objFilter } from "obj-functions";

const numbers = {
  field1: 9,
  field2: 5,
  field3: -4
}

const negativeNumbers = objFilter(numbers, (field, value) => value < 0);

console.log(negativeNumbers); // will print { field3: -4 }

objFilter(obj, callback) accepts 2 parameters:

• obj is the object to filter
• callback is the function used to filter the object and that loops through all object fields. It accepts 2 parameters, the generic object key and the relative value: callback(key, value). Callback should return true whenever current (key: value) pair should be kept in the returned object result.

Developing

Install all the dependencies:

npm install

Build it:

npm run build

To run the tests:

npm test

License

This project is licensed under the MIT License - see the LICENSE.md file for details