@beyond-js/bundles-sdk/bundle/packager/declaration/cache/db.js

BeyondJS Bundles SDK

const sqlite = require('sqlite3');
const fs = require('@beyond-js/fs');
const { promisify } = require('util');

module.exports = new (class {
	#db;
	#ready;
	#run;
	#get;

	constructor() {
		this.ready().catch(exc => console.error(exc.stack));
	}

	async run(...params) {
		await this.ready();
		return await this.#run(...params);
	}

	async get(...params) {
		await this.ready();
		return await this.#get(...params);
	}

	ready = async () => {
		if (this.#ready) return this.#ready.value;
		this.#ready = Promise.pending();

		const name = 'declarations.db';
		const dirname = require('path').join(process.cwd(), '.beyond/cache');
		const store = require('path').join(dirname, name);

		const exists = await fs.exists(store);
		!exists && (await fs.mkdir(dirname, { recursive: true }));

		this.#db = new sqlite.Database(store);
		this.#run = promisify(this.#db.run.bind(this.#db));
		this.#get = promisify(this.#db.get.bind(this.#db));

		if (exists) {
			this.#ready.resolve();
			return;
		}

		await this.#run(
			'CREATE TABLE IF NOT EXISTS declarations (' +
				'packager_id TEXT NOT NULL, ' +
				'hash INTEGER, ' +
				'data TEXT NOT NULL);',
		);

		await this.#run('CREATE UNIQUE INDEX IF NOT EXISTS packager_id_index on declarations (packager_id);');

		this.#ready.resolve();
	};
})();