Dgraph JavaScript HTTP Client

import { DgraphClient, DgraphClientStub, Predicate, Type } from 'dgraph-js-http';

async function runDgraphOperations() {
  // Connect to Dgraph (default: http://localhost:8080)
  const clientStub = new DgraphClientStub(process.env.DGRAPH_ALPHA_ADDR ?? 'http://localhost:8080');
  const dgraphClient = new DgraphClient(clientStub);

  try {
    // Drop all data to start fresh (for example/testing)
    await dgraphClient.alter({ dropAll: true });
    console.log('Dropped all data.');

    // Set schema
    const schema = `
      name: string @index(exact) .
      age: int .
      married: bool .
    `;
    await dgraphClient.alter({ schema: schema });
    console.log('Schema set successfully.');

    // Add data (mutation)
    const mu = dgraphClient.newMutation();
    const p = {
      name: 'Alice',
      age: 26,
      married: true,
      'dgraph.type': 'Person'
    };
    const mutationResponse = await mu.setSetJson(p).commit();
    console.log('Data added:', mutationResponse.getUidsMap().get('blank-0'));

    // Query data
    const query = `
      query {
        q(func: eq(name, "Alice")) {
          name
          age
          married
        }
      }
    `;
    const res = await dgraphClient.newTxn().query(query);
    const people = res.getData();
    console.log('Queried data:', JSON.stringify(people, null, 2));

  } catch (e) {
    console.error('Error interacting with Dgraph:', e);
  } finally {
    // It's good practice to close the client stub in long-running processes if not needed.
    // In simple scripts, this might not be strictly necessary.
    // clientStub.close(); // DgraphClientStub does not have a public .close() method as of v23
  }
}

runDgraphOperations();