## 2 methods sample

```js
fromObjectTree({ aa: { bb: 1 } }) // got { 'aa.bb': 1 }
toObjectTree({ 'halo.cc': 1 }) // got { halo: { cc: 1 } }
```

## can set sep-string

```js
fromObjectTree({ aa: { bb: 1 } }, '__') // got { 'aa__bb': 1 }
toObjectTree({ halo__cc: 1 }, '__') // got { halo: { cc: 1 } }
```

## build

main file is `index.js`, `out.js` is generated by `rollup --format=cjs --file=out.js index.js`