cozo-node

import { CozoDb } from 'cozo-node'; async function main() { const db = new CozoDb('mem'); // Use 'mem' for in-memory, 'sqlite' for persistent storage try { console.log('Inserting initial data...'); await db.run("?[] <- [['hello', 'world!'], ['cozo', 'database']]"); console.log('Querying all data...'); const result1 = await db.run("?[a, b] <- [[a, b]]"); console.log("Result of '?[a, b] <- [[a, b]]':", result1); console.log('Querying with parameters...'); const result2 = await db.run("?[message] <- [['hello', $name]]", { "name": "JavaScript" }); console.log("Result of '?[message] <- [['hello', $name]]':", result2); console.log('Creating and querying a relation...'); await db.run(` :create parent {child, parent} :insert parent <- [['Alice', 'Bob'], ['Bob', 'Charlie']] `); const ancestors = await db.run(` ?[ancestor] := parent{child, parent}, ancestor = parent :union ?[ancestor] := parent{child, intermediate}, ancestor_rec{intermediate, ancestor} `, { child: 'Alice' }); console.log("Ancestors of Alice:", ancestors); } catch (err: any) { console.error("Database operation failed:", err.display || err.message); } finally { console.log("Closing database connection."); db.close(); console.log("Database connection closed."); } } main();