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jpc-core

v0.3.0

Published

Allows remote procedure calls between JS objects over event-like channels or the network

Downloads

8

Readme

jpc - Remote procedure calls between JS objects in different processes

jpc allows you to call JS objects in other processes. From your JS objects, it automatically creates an API that resembles your object API, just with an await in front of every call. It then transmits the call over the channel and call the objects in the remote process, and returns the result back to you.

It can work over various communication channels to communicate with the remote process:

API

Start object

This is what your client calls initially and gets the first object references from.

Objects

The remote API is the same as the local API, just with an await prepended to all calls, aside from new and setters.

| | Local object | Remote object | Difference | |----------|---------------------|---------------------------|--------------------------------------------------| | function | car.startEngine() | await car.startEngine() | same, just with await | | getter | car.owner | await car.owner | same, just with await | | setter | car.owner = val | await car.setOwner(val) | because setters always return the assigned value | | new | new Car() | await Car.newRemote() | because new always returns the object |

Example

Given an object of class

class Movable {
  constructor() {}
}
class Car extends Movable {
  constructor() {
    this.super();
    this._owner = "Fred Flintstone";
  }
  startEngine() {
    console.log("Engine started");
  }
  get owner {
    return this._owner;
  }
  set owner(val) {
    this._owner = val;
  }
}

The local API in the server process is standard JS:

let car = new Car();
car.owner = "Wilma";
console.log(car.owner);
car.startEngine();

The client API in the other process is almost the same, just with an await added in front of all calls:

let car = await Car.newRemote(); // creates a new object in the server process
await car.setOwner("Wilma");
console.log(await car.owner); // shows "Wilma" on the client
await car.startEngine(); // shows "Engine started" on the server