Function validateSourceContract

packages/dnd-core/src/HandlerRegistry.js:12–16

(source)

};

function validateSourceContract(source) {
  invariant(typeof source.canDrag === 'function', 'Expected canDrag to be a function.');
  invariant(typeof source.beginDrag === 'function', 'Expected beginDrag to be a function.');
  invariant(typeof source.endDrag === 'function', 'Expected endDrag to be a function.');
}

function validateTargetContract(target) {
  invariant(typeof target.canDrop === 'function', 'Expected canDrop to be a function.');