Function toDefs

packages/core/test/render3/view_fixture.ts:235–244

(
  types: Type<any>[] | (() => Type<any>[]) | undefined | null,
  mapFn: (type: Type<any>) => PipeDef<any> | DirectiveDef<any>,
)

  mapFn: (type: Type<any>) => PipeDef<any>,
): PipeDefList | null;
function toDefs(
  types: Type<any>[] | (() => Type<any>[]) | undefined | null,
  mapFn: (type: Type<any>) => PipeDef<any> | DirectiveDef<any>,
): any {
  if (!types) return null;
  if (typeof types == 'function') {
    types = types();
  }
  return types.map(mapFn);
}

function toHtml(element: Element, keepNgReflect = false): string {
  if (element) {