how kill everloop when kill tag ???

gistfile1.txt

const matrix = require("@matrix-io/matrix-lite");
const shell = require('shelljs')
const nfc = require("@matrix-io/matrix-lite-nfc");

var mode = 0;
everLoop();

nfc.read.start({rate:100, info:true}, (code, tag)=>{
    if (code === 256){
        console.log("Tag Was Scanned");
        console.log(tag);
        console.log(tag.info.UID);
        if (tag.info.UID === "04EBFA8AA86480"){
            shell.exec('/home/pi/start_robot');
            mode = 1;
        }
        if (tag.info.UID === "0435F58AA86481"){
            shell.exec('~/runmyrobot/scripts/kill_command');
            mode = 0;
        }
    }

    else if (code === 1024)
        console.log("Nothing Was Scanned");
});

/* here beginneth the everloop function */

function everLoop() {
let everloop = new Array(matrix.led.length);

let ledAdjust = 0.0;
if (everloop.length == 35) {
    ledAdjust = 0.51; // MATRIX Creator
} else {
    ledAdjust = 1.01; // MATRIX Voice
}

let frequency = 0.375;
let counter = 0.0;
let tick = everloop.length - 1;

setInterval(()=>{
    if (mode === 1){
    // Create rainbow
    for(i = 0; i < everloop.length; i++) {
        let led = {};

        led.r = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*240))*155+100)/10));
        led.g = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*120))*155+100)/10));
        led.b = Math.round(Math.max(0, (Math.sin(frequency*counter)*155+100)/10));
        

        counter += ledAdjust;

        everloop[i] = led;
    };

    // Slowly show rainbow
    if (tick != 0) {
        for (i = tick; i > 0; i--) {
            everloop[i] = {};
        }
        tick--;
    }

    matrix.led.set(everloop);

    }
    else {
        matrix.led.set("black");
    }

},200);
}

thr33p10-nfc-alert-WORKS.js

const matrix = require("@matrix-io/matrix-lite");
const shell = require('shelljs')
const nfc = require("@matrix-io/matrix-lite-nfc");

var mode = 0;
everLoop();

nfc.read.start({rate:100, info:true}, (code, tag)=>{
    if (code === 256){
        console.log("Tag Was Scanned");
        console.log(tag);
        console.log(tag.info.UID);
        if (tag.info.UID === "04EBFA8AA86480"){
            shell.exec('/home/pi/start_robot');
            mode = 1;
        }
        if (tag.info.UID === "0435F58AA86481"){
            shell.exec('~/runmyrobot/scripts/kill_command');
            mode = 0;
        }
    }

    else if (code === 1024)
        console.log("Nothing Was Scanned");
});

/* here beginneth the everloop function */

function everLoop() {
let everloop = new Array(matrix.led.length);

let ledAdjust = 0.0;
if (everloop.length == 35) {
    ledAdjust = 0.51; // MATRIX Creator
} else {
    ledAdjust = 1.01; // MATRIX Voice
}

let frequency = 0.375;
let counter = 0.0;
let tick = everloop.length - 1;

setInterval(()=>{
    if (mode === 1){
    // Create rainbow
    for(i = 0; i < everloop.length; i++) {
        let led = {};

        led.r = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*240))*155+100)/10));
        led.g = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*120))*155+100)/10));
        led.b = Math.round(Math.max(0, (Math.sin(frequency*counter)*155+100)/10));
        

        counter += ledAdjust;

        everloop[i] = led;
    };

    // Slowly show rainbow
    if (tick != 0) {
        for (i = tick; i > 0; i--) {
            everloop[i] = {};
        }
        tick--;
    }

    matrix.led.set(everloop);

    }
    else {
        matrix.led.set("black");
    }

},200);
}

thr33p10-nfc-alert.js

const matrix = require("@matrix-io/matrix-lite");
const shell = require('shelljs')
const nfc = require("@matrix-io/matrix-lite-nfc");

nfc.read.start({rate:100, info:true}, (code, tag)=>{
    if (code === 256){
        console.log("Tag Was Scanned");
        console.log(tag);
        console.log(tag.info.UID);
        if (tag.info.UID === "04EBFA8AA86480"){
            shell.exec('/home/pi/start_robot');
            everLoop();
        }
        if (tag.info.UID === "0435F58AA86481"){
            shell.exec('~/runmyrobot/scripts/kill_command');
            matrix.led.set("black");
        }
    }

    else if (code === 1024)
        console.log("Nothing Was Scanned");
});

/* here beginneth the eveloop function */

function everLoop() {
let everloop = new Array(matrix.led.length);

let ledAdjust = 0.0;
if (everloop.length == 35) {
    ledAdjust = 0.51; // MATRIX Creator
} else {
    ledAdjust = 1.01; // MATRIX Voice
}

let frequency = 0.375;
let counter = 0.0;
let tick = everloop.length - 1;

setInterval(()=>{
    // Create rainbow
    for(i = 0; i < everloop.length; i++) {
        let led = {};
        led.r = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*240))*155+100)/10));
        led.g = Math.round(Math.max(0, (Math.sin(frequency*counter+(Math.PI/180*120))*155+100)/10));
        led.b = Math.round(Math.max(0, (Math.sin(frequency*counter)*155+100)/10));

        counter += ledAdjust;

        everloop[i] = led;
    };

    // Slowly show rainbow
    if (tick != 0) {
        for (i = tick; i > 0; i--) {
            everloop[i] = {};
        }
        tick--;
    }

    matrix.led.set(everloop);

},200);
}