Value is plain object
Checks if the provided value is an object created by the Object constructor.
- Check if the provided value is truthy.
- Use
typeof
to check if it is an object andObject.prototype.constructor
to make sure the constructor is equal toObject
.
const isPlainObject = val => !!val && typeof val === 'object' && val.constructor === Object; isPlainObject({ a: 1 }); // true isPlainObject(new Map()); // false