@mittwald/react-use-promise/dist/esm/store/Store.js

Simple and declarative use of Promises in your React components. Observe their state and refresh them in various advanced ways.

import { Tags } from "./Tags.js";
export class Store {
    entries = new Map();
    constructor() { }
    getOrSet(id, dataBuilder, options = {}) {
        const { tags = [] } = options;
        const existing = this.entries.get(id);
        if (existing) {
            return existing.data;
        }
        const newData = dataBuilder();
        this.entries.set(id, {
            data: newData,
            tags: new Tags(tags),
        });
        return newData;
    }
    set(id, dataBuilder, options = {}) {
        this.getOrSet(id, dataBuilder, options);
    }
    get(id) {
        return this.entries.get(id)?.data;
    }
    findBy(matcher) {
        return this.getAll().filter(matcher);
    }
    getAll(tag) {
        const entriesArray = Array.from(this.entries.values());
        if (tag === undefined) {
            return entriesArray.map((e) => e.data);
        }
        return entriesArray.filter((e) => e.tags.matching(tag)).map((e) => e.data);
    }
    clear() {
        this.entries.clear();
    }
}