isObject

isObject :: a → Boolean

Evaluates whether the given value is of type Object

import isObject from 'deep-waters/isObject';

isObject({ key: 'value' }); // → true
isObject({}); // → true

isObject([]); // → false
isObject(null); // → false
isObject("foo"); // → false

isObject, like any other type validator, is mostly used in composed validators:

import isString from 'deep-waters/isString';
import matchesPattern from 'deep-waters/matchesPattern';

const isEmail = compose(
  isString,
  matchesPattern(/^\w+([.-]?\w+)*@\w+([.-]?\w+)*(\.\w{2,3})+$/),
);

isObject is built on top of ofClass validator and rely on Object.prototype.toString to check on the received value type in order to avoid typeof weird behaviours and encouraging a runtime strict type validation.