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Overmind Plugin

A plugin system for overmind allowing deeply nested state, actions, reactions, effects and onInitialize.

npm install overmind-plugin

Usage

import { resolvePlugins } from 'overmind-plugin';
import App from 'overmind';
 
const config = {
  state: {
    /* ... */
  },
  actions: {
    /* ... */
  },
};
 
const app = new App(resolvePlugins(config));

Now your config support a new plugins field where you can put nested config:

import { plugin } from 'overmind-plugin';
 
const config = {
  state: { foo: 'bar' },
  actions: { doStuff: actions.doStuff }
  plugins: {
    firstPlugin: plugin({
      state: { isPlugin: true },
      actions: { doStuffFromPlugin: actions.doStuffFromPlugin }
    })
  }
}

...is the same as

const config = {
  state: {
    foo: 'bar',
    firstPlugin: {
      isPlugin: true,
    },
  },
  actions: {
    doStuff: actions.doStuff,
    firstPlugin: {
      doStuffFromPlugin: actions.doStuffFromPlugin,
    },
  },
};

Deep plugins

Plugins don't have to be at the first level of plugins they can be as deep as you want. Just remember to wrap your plugin config a a plugin() call to identify what is a plugin and what is just structure:

const config = {
  plugins: {
    admin: {
      dashboard: plugin(dashboardConfig),
    },
    user: plugin(userConfig),
  },
};

Nested plugins

The config passed to plugin() also support a plugins field so you can do:

const config = {
  plugins: {
    admin: plugin({
      state: {},
      plugins: {
        dashboard: plugin(dashboardConfig),
      },
    }),
  },
};

Dynamic plugins

The plugin() function can accept a function instead of an object. This function will receive the path where the plugin is as an array of strings:

const myPlugin = plugin(path => {
  return {
    state: {},
    actions: {},
  };
});
 
const config = {
  plugins: {
    admin: {
      dashboard: myPlugin, // path will be ['admin', 'dashboard']
    },
    user: myPlugin, // path will be ['user']
  },
};

Plugin factory

You can easily abtract logic with a plugin factory:

const myPluginFactory = options =>
  plugin(path => {
    return {
      state: {},
      actions: {},
    };
  });
 
const config = {
  plugins: {
    admin: {
      dashboard: myPluginFactory({}),
    },
    user: myPluginFactory({}),
  },
};

External library

You can publish your plugin factory as a package so other can use it too. All you have to do is document how to support plugins with overmind.