shelving/db/ChangesProvider.js

Toolkit for using data in JavaScript.

import { AsyncThroughProvider, ThroughProvider } from "./ThroughProvider.js";
/** Synchronous provider that keeps a log of any written changes to its `.changes` property. */
export class ChangesProvider extends ThroughProvider {
    get changes() {
        return this._changes;
    }
    _changes = [];
    addItem(collection, data) {
        const id = super.addItem(collection, data);
        this._changes.push({ action: "set", collection, id, data });
        return id;
    }
    setItem(collection, id, data) {
        super.setItem(collection, id, data);
        this._changes.push({ action: "set", collection, id, data });
    }
    updateItem(collection, id, updates) {
        super.updateItem(collection, id, updates);
        this._changes.push({ action: "update", collection, id, updates });
    }
    deleteItem(collection, id) {
        super.deleteItem(collection, id);
        this._changes.push({ action: "delete", collection, id });
    }
    setQuery(collection, query, data) {
        super.setQuery(collection, query, data);
        this._changes.push({ action: "set", collection, query, data });
    }
    updateQuery(collection, query, updates) {
        super.updateQuery(collection, query, updates);
        this._changes.push({ action: "update", collection, query, updates });
    }
    deleteQuery(collection, query) {
        super.deleteQuery(collection, query);
        this._changes.push({ action: "delete", collection, query });
    }
}
/** Asynchronous provider that keeps a log of any written changes to its `.written` property. */
export class AsyncLoggedProvider extends AsyncThroughProvider {
    get written() {
        return this._written;
    }
    _written = [];
    async addItem(collection, data) {
        const id = await super.addItem(collection, data);
        this._written.push({ action: "set", collection, id, data });
        return id;
    }
    async setItem(collection, id, data) {
        await super.setItem(collection, id, data);
        this._written.push({ action: "set", collection, id, data });
    }
    async updateItem(collection, id, updates) {
        await super.updateItem(collection, id, updates);
        this._written.push({ action: "update", collection, id, updates });
    }
    async deleteItem(collection, id) {
        await super.deleteItem(collection, id);
        this._written.push({ action: "delete", collection, id });
    }
    async setQuery(collection, query, data) {
        await super.setQuery(collection, query, data);
        this._written.push({ action: "set", collection, query, data });
    }
    async updateQuery(collection, query, updates) {
        await super.updateQuery(collection, query, updates);
        this._written.push({ action: "update", collection, query, updates });
    }
    async deleteQuery(collection, query) {
        await super.deleteQuery(collection, query);
        this._written.push({ action: "delete", collection, query });
    }
}