Function assertProjectionSlots

packages/core/src/render3/assert.ts:161–168

(lView: LView, errMessage?: string)

}

export function assertProjectionSlots(lView: LView, errMessage?: string) {
  assertDefined(lView[DECLARATION_COMPONENT_VIEW], 'Component views should exist.');
  assertDefined(
    lView[DECLARATION_COMPONENT_VIEW][T_HOST]!.projection,
    errMessage ||
      'Components with projection nodes (<ng-content>) must have projection slots defined.',
  );
}

export function assertParentView(lView: LView | null, errMessage?: string) {
  assertDefined(