How to rotate an image on canvas towards the mouse?

Question

JavaScript

p5.js handler

var blob,blobs=[],img,angle=0,cnv;

function preload() {
  img = loadImage('static/img/maps/first.png');
  player = loadImage('static/img/heroes/first.png');
}
   		
function setup() {
  
  cnv = createCanvas(windowWidth,windowHeight);
  
  blob = new Blob(width/2-25, height/2-25, 50);
  for(var i = 0; i < 50; i++) {
    blobs[i] = new Blob(random(width),random(height),16);
  }
  
  angleMode(DEGREES);
  
  
}

function draw() {
  background(0);
  translate(width/2-blob.pos.x, height/2-blob.pos.y);
  
  if(blob.pos.x > img.width*2-blob.r*1.5) blob.pos.x = img.width*2-blob.r*1.5;
  if(blob.pos.y > img.height*2-blob.r*1.5) blob.pos.y = img.height*2-blob.r*1.5;
  if(blob.pos.x < 0+blob.r/2) blob.pos.x = 0+blob.r/2;
  if(blob.pos.y < 0+blob.r/2) blob.pos.y = 0+blob.r/2;
  
    image(img, 0, 0, img.width*2,img.height*2);
    
    angle = Math.atan2(mouseX - width/2, - (mouseY - height/2) )*(180/Math.PI);
    
    pop();
    translate(width/2, height/2);
    rotate(angle);
    translate(-width/2, -height/2);
    
    blob.show(); 	
    
   	push();
  for(var i = 0; i < blobs.length; i++) {
    //blobs[i].show();
  }
  
  //angle = atan2(blob.pos.y - mouseY,blob.pos.x - mouseX);
  
  //angle = 20
  
  blob.update();
}

The whole point is that it does not stop, but constantly spin in one direction or another.
Help to understand, please. Thank you very much