What is the difference between the `{}` type and the `object` type in TypeScript?

Asked Jul 16 '19 at 16:04

Active Jul 16 '19 at 16:04

Viewed 41 times

what is the difference between:

function foo(x: {}) {}

and

function foo(x: object) {}` in TypeScript?

I can't find a case where the two are different. For example, even though null is an Object (with a capital 'O'), neither line of the following type-checks:

const x: {} = null`;
const y: object = null`;

asked Jul 16 '19 at 16:04

Max Heiber

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You need to read [the documentation on `object`](https://www.typescriptlang.org/docs/handbook/basic-types.html#object). It is defined by TypeScript to be any non-primitive. `null` is a primitive. – Patrick Roberts Jul 16 '19 at 16:08
1

Anything is compatible with `{}` including primitives, `object` represents only non primitives – Titian Cernicova-Dragomir Jul 16 '19 at 16:46

What is the difference between the `{}` type and the `object` type in TypeScript?

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