Chaining a Function that Returns Promise<any> Results in Incorrect Type

[ChrisGrohHS]

TypeScript Version: 2.1.4

Code

declare function loadBlob(): Promise<Blob>;
declare function readBlobAsJson(blob: Blob): Promise<any>;

loadBlob().then(readBlobAsJson).then(d => {
    d.x// d is Type Blob here
});

Expected behavior:
Compiles without error

Actual behavior:
Property 'x' does not exist on type 'Blob'.

This works without error if an explicit type is set on readBlobAsJson instead of any. Compiled without error in 2.0.6

[Alexander-Taran]

duplicate of #10977