error.txt

>tsc
sbuffers.d.ts(22,16): error TS2435: Ambient modules cannot be nested in other modules or namespaces.

sbuffers.d.ts

import { Readable, Writable } from 'stream'

declare module StreamBuffers {
  export interface StreamBuffers {
    ReadableStreamBuffer: ReadableStreamBufferFactory
    WritableStreamBuffer: WritableStreamBuffer
  }

  interface ReadableStreamBufferFactory {
    new (options: Options): Readable
  }
  interface WritableStreamBuffer {
    new (options: Options): Writable
  }

  interface Options {
    frequency: number
    chunkSize: number
  }
}

declare module 'stream-buffers' {
  var streamBuffers: StreamBuffers.StreamBuffers
  export = streamBuffers
}