74 lines
1.4 KiB
Markdown
74 lines
1.4 KiB
Markdown
# Declarative State & Side-effect management with [CerebralJS](https://cerebraljs.com/)
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## How to use
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### Using `create-next-app`
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Execute [`create-next-app`](https://github.com/zeit/next.js/tree/canary/packages/create-next-app) with [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/) or [npx](https://github.com/zkat/npx#readme) to bootstrap the example:
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```bash
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npx create-next-app --example with-cerebral with-cerebral-app
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# or
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yarn create next-app --example with-cerebral with-cerebral-app
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```
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### Download manually
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Download the example:
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```bash
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curl https://codeload.github.com/zeit/next.js/tar.gz/master | tar -xz --strip=2 next.js-master/examples/with-cerebral
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cd with-cerebral
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```
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Install it and run:
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```bash
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npm install
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npm run dev
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# or
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yarn
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yarn dev
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```
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Deploy it to the cloud with [now](https://zeit.co/now) ([download](https://zeit.co/download))
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```bash
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now
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```
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## The idea behind the example
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Use [CerebralJS](https://cerebraljs.com/) to manage an apps state and side effects in a declarative manner:
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Declarative CerebralJS:
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```js
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;[
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setLoading(true),
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getUser,
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{
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success: setUser,
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error: setError,
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},
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setLoading(false),
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]
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```
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vs imperative JS:
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```js
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function getUser() {
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this.isLoading = true
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ajax
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.get('/user')
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.then(user => {
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this.data = user
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this.isLoading = false
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})
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.catch(error => {
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this.error = error
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this.isLoading = false
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})
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}
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```
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