54 lines
1.5 KiB
TypeScript
54 lines
1.5 KiB
TypeScript
import { applyMiddleware, Middleware } from 'redux';
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import { IState, IStore } from '../../app/types';
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/**
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* A registry for Redux middleware, allowing features to register their
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* middleware without needing to create additional inter-feature dependencies.
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*/
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class MiddlewareRegistry {
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_elements: Array<Middleware<any, any>>;
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/**
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* Creates a MiddlewareRegistry instance.
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*/
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constructor() {
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/**
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* The set of registered middleware.
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*
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* @private
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* @type {Middleware[]}
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*/
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this._elements = [];
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}
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/**
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* Applies all registered middleware into a store enhancer.
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* (@link http://redux.js.org/docs/api/applyMiddleware.html).
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*
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* @param {Middleware[]} additional - Any additional middleware that need to
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* be included (such as middleware from third-party modules).
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* @returns {Middleware}
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*/
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applyMiddleware(...additional: Array<Middleware<any, any>>) {
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return applyMiddleware(...this._elements, ...additional);
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}
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/**
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* Adds a middleware to the registry.
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*
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* The method is to be invoked only before {@link #applyMiddleware()}.
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*
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* @param {Middleware} middleware - A Redux middleware.
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* @returns {void}
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*/
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register(middleware: Middleware<any, IState, IStore['dispatch']>) {
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this._elements.push(middleware);
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}
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}
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/**
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* The public singleton instance of the MiddlewareRegistry class.
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*/
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export default new MiddlewareRegistry();
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