Long list of extended classes/interfaces is not broken into new lines

[stryju]

Prettier 1.14.0
Playground link

--parser babylon

Input:

declare interface SVGUseElement
  extends SVGElement,
          SVGURIReference,
          SVGTests,
          SVGLangSpace,
          SVGExternalResourcesRequired,
          SVGStylable,
          SVGTransformable {
  +x: SVGAnimatedLength;
  +y: SVGAnimatedLength;
  +width: SVGAnimatedLength;
  +height: SVGAnimatedLength;
  +instanceRoot: SVGElementInstance;
  +animatedInstanceRoot: SVGElementInstance;
}

Output:

declare interface SVGUseElement
  extends SVGElement, SVGURIReference, SVGTests, SVGLangSpace, SVGExternalResourcesRequired, SVGStylable, SVGTransformable {
  +x: SVGAnimatedLength;
  +y: SVGAnimatedLength;
  +width: SVGAnimatedLength;
  +height: SVGAnimatedLength;
  +instanceRoot: SVGElementInstance;
  +animatedInstanceRoot: SVGElementInstance;
}

Expected behavior:
List of extended classes/interfaces should be split into multiple lines