Incorrect parameter type in console.debug

[gaspardle]

TypeScript Version: 2.1.5

Code
In lib.es6.d.ts, console.debug is defined as

debug(message?: string, ...optionalParams: any[]): void;

while console.log is

log(message?: any, ...optionalParams: any[]): void;

Expected behavior:

Shouldn't the message parameter have the same type, any ? According to https://msdn.microsoft.com/en-us/library/hh696634.aspx , they are supposed to be identical.