Fetch plugin

syncedFetch is a simple wrapper around fetch to reduce boilerplate.

• get: The URL to get. If it is an observable or Selector function, it will re-run whenever the value changes.
• set: The URL to set
• getInit: The init parameter to pass to fetch when getting
• setInit: The init parameter to pass to fetch when setting. Defaults to { method: 'POST' }
• valueType: The function to call on the Response from get. Defaults to json.
• onSavedValueType: The function to call on the Response from set. Defaults to the valueType option or json.
• onSaved: Receives { saved, input, currentValue, props }. Return a value to save back into the observable; saved is the parsed, transformed response from set.

Example:

import { syncedFetch } from '@legendapp/state/sync-plugins/fetch';
import { observable } from '@legendapp/state';

const state$ = observable(syncedFetch({
    get: 'https://url.to.get',
    set: 'https://url.to.set',
    onSaved: ({ saved }) => {
        return {
            updatedAt: saved.updatedAt
        }
    }
}))