Pinia
Original author(s)Eduardo San Martin Morote
Initial releaseNovember 2019 (2019-11)
Stable release
2.1.7 / 13 Oct 2023
Repositorygithub.com/vuejs/pinia
Written inTypeScript
PlatformWeb platform
PredecessorVuex
Size~1.5 KB
TypeState management library
LicenseMIT License
Websitepinia.vuejs.org

Pinia (pronounced /piːnjʌ/, or "peenya" in English) is a store library and state management framework for Vue.js.[1] Designed primarily for building front-end web applications, it uses declarative syntax and offers its own state management API. Pinia was endorsed by the Vue.js team as a credible alternative to Vuex and is currently the official state management library for Vue.[2]

Overview

Unlike Vuex, Pinia is modular by design and does not include mutations. This enables developers to create numerous stores and import them into components as needed. The framework provides a centralised store with a built-in mechanism for saving, updating and retrieving application state.[3]

History

Pinia was conceived by Vue developer Eduardo San Martin Morote[4] as an exploration of what Vuex could look like in the future.[5] This involved creating a simpler API with "less ceremony" and providing better support for type inference with TypeScript.[6] It became an official part of the Vue.js ecosystem on February 7, 2022.[5]

The store library takes its name from piña, the Spanish word for "pineapple." According to its creators, "a pineapple is in reality a group of individual flowers that join together to create a multiple fruit. Similar to stores, each one is born individually, but they are all connected at the end."[7]

Features

Store pillars

Stores in Pinia are defined via a JavaScript object with a variety of characteristics that govern their behaviour. These are regarded as the "pillars" of a store, and as shown in the code example below, include id, state, getters and actions.[8]

import { createStore } from 'pinia'

export const useCounterStore = createStore({
  id: 'counter',

  state: () => ({
    count: 0
  }),

  getters: {
    doubleCount: state => state.count * 2
  },

  actions: {
    increment(amount) {
      this.state.count += amount
    }
  }
})

Devtools support

Pinia integrates with Vue Devtools, a popular extension for debugging Vue.js applications.[9]

Support for plugins

The framework includes support for multiple plugins, including Nuxt and the aforementioned Devtools.[10]

Hot module replacement

Pinia allows developers to maintain existing states while writing code and to modify stores without reloading the page.

See also

References

  1. ↑ Gerchev, Ivaylo (2022-04-11). "Complex Vue 3 state management made easy with Pinia". LogRocket Blog. Retrieved 2023-02-22.
  2. ↑ "Build a To-do List App with Pinia and Vue 3". Deepgram. 2022-10-12. Retrieved 2023-02-22.
  3. ↑ Jahr, Adam. "What is Pinia? - Pinia Fundamentals". Vue Mastery. Retrieved 2023-01-18.
  4. ↑ "Pinia, an Alternative Vue.js Store - Vue School Blog". vueschool.io. Retrieved 2023-01-17.
  5. 1 2 Mariappan (2022-10-13). "What makes Pinia the new default?". Frontend Weekly. Retrieved 2023-01-17.
  6. ↑ "Pinia vs. Vuex: Is Pinia a good replacement for Vuex?". DEV Community 👩‍💻👨‍💻. Retrieved 2023-02-22.
  7. ↑ "Everything Beyond State Management in Stores with Pinia". morioh.com. Retrieved 2023-02-22.
  8. ↑ "Pinia vs Vuex: Farewell Vuex, Hello Pinia! How to Get Started? | SPG Blog | Web Applications Development |". Software Planet Group. 2023-01-11. Retrieved 2023-01-17.
  9. ↑ "How To Handle State Management in Vue Using Pinia - CoderPad". coderpad.io. 2023-01-27. Retrieved 2023-02-22.
  10. ↑ "Everything Beyond State Management in Stores with Pinia by Eduardo San Martin Morote - GitNation". portal.gitnation.org. Retrieved 2023-01-18.
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