import() in d.ts files can't be resolved if used as template argument of other import()'ed type

[asvetliakov]

TypeScript Version: 2.9.1

Search Terms: declaration

Code
test1.d.ts

export interface T<P> {
    a: P;
}

test2.d.ts

export declare const theme: { a: string }

test3.d.ts

export declare const a: import("./test1").T<import("./test2").theme>;

Expected behavior:
Compiles correctly

Actual behavior:

test3.d.ts:1:45 - error TS2307: Cannot find module './test2'.

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