The primary interface is the Jinaga object. Create one on the server and one in the browser. Then create facts and run queries in either place.

Initializing Jinaga on the Server

Install the server-side components with the package jinaga-server. To obtain an instance on the server, call JinagaServer.create().

import { JinagaServer } from 'jinaga-server';

const pgConnection = process.env.JINAGA_POSTGRESQL || 'postgresql://user:pass@localhost:5432/app';
const { handler, j } = JinagaServer.create({
    pgKeystore: pgConnection,
    pgStore: pgConnection

The handler member is an Express middleware function.

import * as express from 'express';
import * as http from 'http';

const app = express();
const server = http.createServer(app);

app.use('/jinaga', handler);


The j member is the Jinaga object. Use this for all server-side fact creation and queries.

Initializing Jinaga in the Browser

Having created the Express middleware and given it a URL, you can use that to call JinagaBrowser.create().

const j = JinagaBrowser.create({
    httpEndpoint: '/jinaga'

You can now run queries and create facts in the browser.

See Also