Returns true if input value passed is any kind of real object (a.k.a. a hash) in any form, such as object literal {}, class instance (instantiated with new MyClass), object created by Object.create() with or without a specified prototype etc).
Unlike other isObject values like "function" or "array" or object-primitives like "Boolean" types are NOT considered a real "hash" object.
Why do we need another isObject() function ? Because:
it returns true ONLY and ALWAYS if type is any kind of Object Hash (a.k.a {}), irrespective of how it was created (literal, new Xxx, etc) - unlike _.isPlainObject() or _.isObject().
it returns true for any Object Hash {}, even if it is not a plain {} but an instance created by some Function/class constructor OR even if it has a prototype pointing to null or to another object via Object.create(anotherObj) etc (unlike lodash's _.isPlainObject())
it returns false for any non-Hash type, such as Array, Function, new String() etc (unlike JS or lodash's .isObject())
@todo: caveat: TypeScript type guard is not great. Fix to allow for only "Hash" types, not just "object" types, eg Record<> or similar
Returns
trueif input value passed is any kind of real object (a.k.a. a hash) in any form, such as object literal {}, class instance (instantiated with new MyClass), object created byObject.create()with or without a specified prototype etc).Unlike other
isObjectvalues like "function" or "array" or object-primitives like "Boolean" types are NOT considered a real "hash" object.Why do we need another
isObject()function ? Because:it returns
trueONLY and ALWAYS if type is any kind of Object Hash (a.k.a{}), irrespective of how it was created (literal, new Xxx, etc) - unlike_.isPlainObject()or_.isObject().it returns
truefor any Object Hash{}, even if it is not a plain{}but an instance created by some Function/class constructor OR even if it has a prototype pointing to null or to another object viaObject.create(anotherObj)etc (unlike lodash's_.isPlainObject())it returns
falsefor any non-Hash type, such asArray,Function,new String()etc (unlike JS or lodash's.isObject())@todo: caveat: TypeScript type guard is not great. Fix to allow for only "Hash" types, not just "object" types, eg Record<> or similar
See
z.isInstance()for the instance-only checkz.isPOJSObject()for the Plain Old JavaScript Object check