JXA: Move mouse to centre of frontmost window

MoveMouse.js

ObjC.import('stdlib')
ObjC.import('CoreGraphics');

// Move mouse cursor to specified position
function moveMouse(x, y) {
  var pos = $.CGPointMake(x, y);
  var event = $.CGEventCreateMouseEvent(null, $.kCGEventMouseMoved, pos, $.kCGMouseButtonLeft);
  $.CGEventPost($.kCGHIDEventTap, event);
}


// Run script
function run() {
  var app = Application.currentApplication();

  app.includeStandardAdditions = true;

  var win = app.windows[0],
    bounds = win.properties().bounds;

  // Calculate centre of window
  var x = Math.trunc(bounds.x + (bounds.width / 2)),
    y = Math.trunc(bounds.y + (bounds.height / 2));

  console.log('centre = ' + x + 'x' + y);
  moveMouse(x, y);
}