Moleculer usage

const { ServiceBroker } = require("moleculer"); // Create broker let broker = new ServiceBroker(); // Create a service broker.createService({ name: "math", actions: { // You can call it as broker.call("math.add") add(ctx) { return Number(ctx.params.a) + Number(ctx.params.b); }, // You can call it as broker.call("math.sub") sub(ctx) { return Number(ctx.params.a) - Number(ctx.params.b); } } }); // Start broker broker.start(); // Call actions of service broker.call("math.add", { a: 5, b: 3 }) .then(res => console.log("5 + 3 = " + res)); // Call actions with error handling broker.call("math.sub", { a: 9, b: 2 }) .then(res => console.log("9 - 2 = " + res)) .catch(err => console.error(`Error occured! ${err.message}`)); // Chain calls broker.call("math.add", { a: 3, b: 5}) .then(res => broker.call("math.sub", { a: res, b: 2 })) .then(res => console.log("3 + 5 - 2 = " + res));