我声明这一点：

export interface Interface {
    func: string[][] => string[][];
}

我得到了这个：

error TS1005: ';' expected.
func: string[][] => string[][];
error TS1131: Property or signature expected.
func: string[][] => string[][];
                    ~~~~~~
error TS1011: An element access expression should take an argument.
func: string[][] => string[][];
error TS1011: An element access expression should take an argument.
func: string[][] => string[][];