total-order/key

:old_key: [@total-order/key](https://total-order.github.io/key)
==

Comparison function from key function for JavaScript.
See [docs](https://total-order.github.io/key/index.html).

```js
import {key, len, prop} from '@total-order/key';
import {increasing} from '@total-order/primitive';
import {iterable} from '@total-order/iter';

const order = key(
    iterable(increasing),
    function* (x) {
        yield x['🙀'] * x['🦿'];
        yield x['🤖'];
    }
);
```

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