Type null is not assignable to type object with strictNullChecks

[xLama]

TypeScript Version: 2.2.0-dev20170112

Code

{
    "compilerOptions": {
        "strictNullChecks": true
    },
}

let foo : object = null

Expected behavior:

No error due to typeof null === "object"

Actual behavior:
Error. Type null is not assignable to type object

[ahejlsberg]

This is working as intended. The fact that typeof null === "object" is generally considered a mistake, but it would be a breaking change for JavaScript to fix it. Luckily we can have TypeScript catch it!