src/index.js
export {default as Node} from './Node.js';
export {default as PairingHeap} from './PairingHeap.js';
export {default as decreasekey} from './decreasekey.js';
export {default as merge} from './merge.js';
export {default as mergepairs} from './mergepairs.js';
export {default as prepend} from './prepend.js';