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# @hapi/topo
Topological sorting with grouping support.
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## Usage
See the [API Reference](API.md)
**Example**
```js
const Topo = require('topo');
const morning = new Topo();
morning.add('Nap', { after: ['breakfast', 'prep'] });
morning.add([
'Make toast',
'Pour juice'
], { before: 'breakfast', group: 'prep' });
morning.add('Eat breakfast', { group: 'breakfast' });
morning.nodes; // ['Make toast', 'Pour juice', 'Eat breakfast', 'Nap']
```