Property 'assign' does not exist on type 'ObjectConstructor'

I am using TypeScript in my application, where I use function:

Object.assign(this.success, success.json())

However, during compilation, I receive the following error:

error TS2339: Property 'assign' does not exist on type 'ObjectConstructor'.

Do you have any idea how can I get rid of this error?

You can use type assertion, like this:

(Object).assign(this.success, success.json())

Stack Overflow Q#35959372, score: 147