@uppy/store-default/lib/index.js

The default simple object-based store for Uppy.

import packageJson from '../package.json' with { type: 'json' };
/**
 * Default store that keeps state in a simple object.
 */
class DefaultStore {
    static VERSION = packageJson.version;
    state = {};
    #callbacks = new Set();
    getState() {
        return this.state;
    }
    setState(patch) {
        const prevState = { ...this.state };
        const nextState = { ...this.state, ...patch };
        this.state = nextState;
        this.#publish(prevState, nextState, patch);
    }
    subscribe(listener) {
        this.#callbacks.add(listener);
        return () => {
            this.#callbacks.delete(listener);
        };
    }
    #publish(...args) {
        this.#callbacks.forEach((listener) => {
            listener(...args);
        });
    }
}
export default DefaultStore;