Tighten array's higer-order method declarations

[yskkin]

[0, 1, 2, null, undefined].filter(x => x) unintendedly (for me) evaluates to [1, 2].

What do you think about changing declaration of Array.prototype.filter (or any higher-order function which takes predicate) to

    filter(predicate: (value: T, index: number, array: T[]) => boolean, thisArg?: any): T[];

from

    filter(predicate: (value: T, index: number, array: T[]) => unknown, thisArg?: any): T[];

I manually changing lib-es5 from better-typescript-lib and that works good for my project.

[uhyo]

Thank you, fixed in 2.1.0.