@swear-js/core

🍭 Swear JS

@swear-js/core

---

Core package of SwearJS state manager

Frameworks:

• Framework agnostic (@swear-js/core)
• React (@swear-js/react)

Demo

Demo application is runnable via npx:

• [Framework agnostic] $ npx swear-demo-agnostic

Don't forget to remove created project directory after

Installation

$ npm install @swear-js/core

or in case you are using Yarn:

$ yarn add @swear-js/core

Usage

---

First you have to initialize your store.

import { createStore } from "@swear-js/core";

const store = createStore();

Then you have to create

import { createStore } from "@swear-js/core";

const store = createStore();

// This will create swear, and triggers onUpdate everytime it changes
store.subscribe({
  swearId: 'count',
  defaultState: 0,
  onUpdate: (newValue) => {
      // You can here trigger things when it updates. You can trigger here your render function, or something
  }
});

const decreaseHandler = () => {
  store.setSwearValue('count', 'decrease', store.getSwearValue('count') - 1);
};
const increaseHandler = () => {
  store.setSwearValue('count', 'increase', store.getSwearValue('count') + 1);
};

Logging

---

You can pass your custom logger to the store, or use @swear-js/logger. Swear-js logger usage:

import { createStore } from "@swear-js/core";
import { swearLogger } from "@swear-js/logger";

const store = createStore({ onPatch: swearLogger });

In order to implement your own logger solution, you just have to keep in mind an API of onPatch argument of the store. onPatch is any callback that get SwearPatch(you can find it in package) type as an argument. Simply SwearPatch is:

{
  swearId, // String value which gets a name of patched swear state
  tag, // String value which gets an optional tag, you want to set
  prev, // Previous store state (object)
  payload, // Payload passed
  next // Current store state
}

Example very-simple implementation of logger:

import { SwearPatch, createStore } from "@swear-js/core";

const logger = ({ swearId, tag, prev, payload, next }: SwearPatch) => {
    console.log(`Swear: ${swearId}, Tag: ${tag}, Payload: ${payload}`);
    console.log(`Previous state: ${prev}`, `Current state: ${next}`);
};

const store = createStore({ onPatch: logger });