heuristics is a library of useful heuristics, type checks, and validation helpers for JavaScript and TypeScript. Instead of repeatedly validating types (here, we mean type guards, not annotations), evaluating whether or not an API response is null (or indeed an object, only entirely empty), you can depend on this tested, consistent library API to get the job done.

• Install
  • Supported Environments
• Documentation

npm install heuristics

OR

yarn add heuristics

heuristics currently supports UMD, CommonJS (node versions >= 10), and ESM build-targets

Commonjs:

const { isDefined } = require('heuristics');

ESM:

import { isDefined } from 'heuristics';

Full documentation can be found here