@dxtmisha/functional

@dxtmisha/functional is a library of utilities, base classes, and composables for complex web development in Vue 3. The package operates on the foundation of @dxtmisha/functional-basic, providing reactive wrappers and architectural solutions designed specifically for the Vue ecosystem (Composition API).

Why this library?

Every modern frontend application inevitably faces the same set of challenges: managing HTTP requests, localization, dates, cookies, caching, loading states, and side effects.

When developers solve these tasks locally within components, it often leads to code duplication, bloated .vue files, and memory leaks from forgotten subscriptions. functional solves this by moving business logic into ready-made reactive abstractions. You simply call the necessary composable or class, and under the hood, the library manages ref dependencies, monitors the Vue lifecycle, and maintains strict TypeScript typing.

What does it do?

For network requests (API) — a set of composables (useApiGet, useApiPost, useApiRequest, etc.) that encapsulate server interactions. They return a fully reactive object with loading states, errors, and fetched data. They intelligently handle response caching, headers, and automatic cancellation of outdated requests.

For browser state management — convenient reactive hooks (useStorageRef, useSessionRef, useCookieRef, useHashRef) that seamlessly bind a Vue variable to LocalStorage, URL hash, or a cookie. It automatically synchronizes with browser storage and reacts across tabs.

For geolocation and internationalization — utilities like useTranslateRef, useGeoIntlRef, and DatetimeRef that automatically respond strictly to changes in global environment settings (language, currency, region) and dynamically rebuild forms, dates, and translations without custom event listeners.

For UI component architecture — a powerful system of base classes (DesignAbstract, DesignComp, DesignAsyncAbstract) that allows extracting complex internal component logic into separate, testable files. This makes .vue templates beautifully clean and business features highly reusable.

For auxiliary utilities — specialized reactive modules for SEO tags (useMeta), inter-tab real-time communication (useBroadcastValueRef), robust loading indicators (useLoadingRef), and executing asynchronous operations cleanly in the Vue render cycle (computedAsync, toComputed).

Installation

npm install @dxtmisha/functional

Quick Start

import { useGeoIntlRef, useStorageRef, useApiRef } from '@dxtmisha/functional'

export default {
  setup() {
    // Reactive geolocation and formatting
    const { country, language, intl } = useGeoIntlRef()

    // Reactive localStorage with auto-sync across tabs
    const { value: settings, set: setSettings } = useStorageRef('app-settings', {
      theme: 'dark'
    })

    // Reactive API requests with caching and loading states
    const { data, loading, error, reload } = useApiRef('/api/users')

    return { intl, settings, setSettings, data, loading }
  }
}

Principles

• Full Composition API integration — every utility is designed with Vue 3's reactivity system in mind, heavily utilizing ref, computed, and lifecycle hooks.
• Separation of concerns — ideologically encourages extracting validation, state management, and side-effects into specialized classes, maintaining "thin" components.
• Type safety — provides 100% TypeScript type coverage between APIs, storages, and the UI, protecting codebase scaling with smart type inference.
• Predictable resource management — safely manages subscriptions and frees memory. When a component is unmounted, associated tasks and watchers are cleanly terminated.

Documentation

Full API reference, examples, and guides:

📖 https://dxtmisha.github.io/dxt-ui/?path=/docs/dxtmisha-en-functional-about-library--docs

Difference from @dxtmisha/functional-basic

• @dxtmisha/functional-basic — core utilities, no framework dependencies. Use this with vanilla JS, React, or any non-Vue stack, or when building a library.
• @dxtmisha/functional — extends functional-basic with Vue 3 composables and reactive wrappers. Use this when building complex Vue / Nuxt applications.

License

MIT