Vararg param is mistakenly resolved as overriding

[Schahen]

Following code:

./emitter.d.ts

declare module "emitter" {
    namespace EventEmitter {
            interface EventEmitter extends Core.EventEmitter {
            }   

            class EventEmitter {
            }   
    }   


    export = EventEmitter;
}

./core.d.ts

declare namespace Core {
     interface EventEmitter {
        emit(event: string | symbol, ...args: any[]): boolean;
    }
}

./index.d.ts

/// <reference path="./core.d.ts" />
/// <reference path="./emitter.d.ts" />

declare module "worker" {
import { EventEmitter } from "emitter";
 class Worker extends EventEmitter {
        emit(event: "error", err: Error): boolean;
        emit(event: "exit", exitCode: number): boolean;
        emit(event: "message", value: any): boolean;
        emit(event: "online"): boolean;
        emit(event: string | symbol, ...args: any[]): boolean;
 }
}

is translated however compilation fails with:

out/index.worker.module_node_4_minimal.kt:26:5: error: 'emit' overrides nothing
    override fun emit(event: String /* "message" */, value: Any): Boolean
    ^

[Schahen]

A smaller example:
./emitter.d.ts

declare module "emitter" {
    export class EventEmitter {
        emit(event: string | symbol, ...args: any[]): boolean;
    }   
}

./index.d.ts

/// <reference path="./emitter.d.ts" />

declare module "worker" {
import { EventEmitter } from "emitter";
 class Worker extends EventEmitter {
        emit(event: "error", err: Error): boolean;
        emit(event: "exit", exitCode: number): boolean;
        emit(event: "message", value: any): boolean;
        emit(event: "online"): boolean;
        emit(event: string | symbol, ...args: any[]): boolean;
 }
}

[Schahen]

And, predictably, even more a smaller example:

./index.d.ts

class EventEmitter {
    emit(event: string | symbol, ...args: any[]): boolean;
}   

class Worker extends EventEmitter {
    emit(event: "error", err: Error): boolean;
    emit(event: "exit", exitCode: number): boolean;
    emit(event: "message", value: any): boolean;
    emit(event: "online"): boolean;
    emit(event: string | symbol, ...args: any[]): boolean;
}