59 lines
1.2 KiB
Markdown
59 lines
1.2 KiB
Markdown
# lowdb/lib/fp
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__:warning: Experimental__
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`lowdb/lib/fp` lets you use [`lodash/fp`](https://github.com/lodash/lodash/wiki/FP-Guide), [`Ramda`](https://github.com/ramda/ramda) or simple JavaScript functions with lowdb.
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It can help reducing the size of your `bundle.js`
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## Usage
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```js
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import low from 'lowdb/lib/fp'
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import { concat, find, sortBy, take, random } from 'lodash/fp'
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const db = low()
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// Get posts
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const defaultValue = []
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const posts = db('posts', defaultValue)
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// replace posts with a new array resulting from concat
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// and persist database
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posts.write(
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concat({ title: 'lowdb is awesome', views: random(0, 5) })
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)
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// Find post by id
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const post = posts(
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find({ id: 1 })
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)
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// Find top 5 fives posts
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const popular = posts([
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sortBy('views'),
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take(5)
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])
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```
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## API
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`lowdb/lib/fp` shares the same API as `lowdb` except for the two following methods.
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__db(path, [defaultValue])([funcs])__
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Returns a new array or object without modifying the database state.
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```js
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db('posts')(filter({ published: true }))
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```
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__db(path, [defaultValue]).write([funcs])__
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Add `.write` when you want the result to be written back to `path`
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```js
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db('posts').write(concat(newPost))
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db('user.name').write(set('typicode'))
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```
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