node-blocks

Flow Based Programming with JavaScript

Install

``
npm install node-blocks
`

Documentation

coming soon

Creating a Node

In this project Node function constructor is a variable container. You can store any variable on node

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`js
import { Node } from 'node-blocks';

var a1 = new Node();

a1.listen(function () {
console.log("Value of a1 got Changed", "new value", a1.read());
});

a1.write('34');
a1.write('50');
`

!alt pic

Transform a Node into Another

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`js
import { Node } from 'node-blocks';

var a1 = new Node();
a1.listen(function () {
console.log("a1 changed", a1.read());
});

var b1 = a1.transform(function (v) {
return 2 * v;
});
b1.listen(function () {
console.log("b1 changed", b1.read());
});

a1.write(10);
a1.write(50);
`
!alt pic

Connect a Node to another

!alt pic
`js
import { Node } from 'node-blocks';

var a1 = new Node();
a1.listen(function () {
console.log("a1 changed", a1.read());
});

var b1 = new Node();
b1.listen(function () {
console.log("b1 changed", b1.read());
});

a1.connect(b1);

a1.write(10);
a1.write(50);
`
!alt pic

Create Blocks

Block has kind of machine. Block has multiple inout and multiple out Nodes. You can connect Multiple block to
generate Bigger Blocks.



Adder

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`js
import { Block } from 'node-blocks';

var adder = new Block({
in: ["x", "y"],
out: ["sum"]
}, function (inp, out) {
var sum = inp.x.read() + inp.y.read();
out.sum.write(sum);
});

adder.out.sum.listen(function () {
console.log("Total Sum is ", adder.out.sum.read());
});

adder.in.x.write(10);
adder.in.y.write(20);
adder.in.x.write(30);
adder.in.y.write(50);
`
!alt pic

Alternate Syntax


`js
class AdderBlock extends Block {
constructor() {
super();
}

getConfig() {
return {
in: ["x", "y"],
out: ["sum"]
}
}

run(inp, out) {
var sum = inp.x.read() + inp.y.read();
out.sum.write(sum);
}
}
`


Adder + Doubler

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`js
import { Block } from 'node-blocks';

var doubler = new Block({
in: ["x"],
out: ["d"]
}, function (inp, out) {
out.d.write(inp.x.read() * 2);
});


var adder = new Block({
in: ["x", "y"],
out: ["sum"]
}, function (inp, out) {
var sum = inp.x.read() + inp.y.read();
out.sum.write(sum);
});

adder.out.sum.connect(doubler.in.x);

doubler.out.d.listen(function () {
console.log("Double of Sum is ", doubler.out.d.read());
});

``
!alt pic