old_contents: import insertBefore from 'tricks/dom/insertBefore';
  import create from 'tricks/dom/create';
  import find from 'tricks/dom/find';
  
  if (!find('meta[name=viewport]')) {
  
  	// Insert Meta Tag
  	insertBefore(create('meta', {
  		name: 'viewport',
  		content: 'width=device-width, initial-scale=1.0'
  	}), document.getElementsByTagName('script')[0]);	
  }
  
new_contents: import insertBefore from 'tricks/dom/insertBefore';
  import create from 'tricks/dom/create';
  import query from 'tricks/dom/query';
  
  if (!query('meta[name=viewport]')) {
  
  	// Insert Meta Tag
  	insertBefore(create('meta', {
  		name: 'viewport',
  		content: 'width=device-width, initial-scale=1.0'
  	}), document.getElementsByTagName('script')[0]);	
  }
  
subject: Improve accessibility and security