Web Animations API это плагин?

let el = document.getElementById('test'),  
    chrs = el.textContent.split(''),  
    html = '';  
for (let i in chrs) 
  html += (chrs[i] === 'о') ? '<span>о</span> ' : chrs[i];  
el.innerHTML = html;  
 
let os = el.querySelectorAll('span');  
for (let o of os)  
  o.animate({ 
    transform: [ 
      'scaleX(1.2)',  
      'translateY(-0.5em) scale(1, 1.2)',  
      'translateY(-0.7em) scale(1.5, 0.5)' 
    ]}, 
    { duration: 200, ease: 'ease-out', iterations: Infinity, direction: 'alternate' } 
  );  
 
el.animate([ 
    { offset: 0, transform: 'scaleY(0)', left: '0', top: '1em', color: '#000' }, 
    { transform: 'scaleY(0)', offset: 0.10 }, 
    { transform: 'none',      offset: 0.15, ease: 'ease-in' }, { 
      transform: 'none', left: '0', top: '1em',  
      offset: 0.35 
    }, { 
      transform: 'translate(-50%, -50%)',  
      left: '50vw', top: '50vh',  
      offset: 0.375, ease: 'ease-out' 
    }, { 
      transform: 'translate(-50%, -50%)',  
      left: '50vw', color: '#f00', 
      offset: 0.50 
    }, { 
      transform: 'rotateY(90deg) translate(-50%, -50%)',  
      left: 'calc(50vw - 210px)', color: '#f00',  
      offset: 0.55 
    }, { 
      transform: 'translate(-50%, -50%)', left: '50vw',  
      offset: 0.60 
    }, { 
      transform: 'translate(-50%, -50%)',  
      left: '50vw', top: '50vh', color: '#07f',  
      offset: 0.75 
    }, { 
      transform: 'none', left: '0', top: '1em',  
      offset: 0.775, ease: 'ease-out' 
    }, 
    { transform: 'none',      offset: 0.85},  
    { transform: 'scaleY(0)', offset: 0.90}, 
    { offset: 1, transform: 'scaleY(0)', left: '0', top: '1em', color: '#000' } 
  ],  
  { duration: 12000, iterations: Infinity} 
); 

#test { 
  position: absolute; left: 0; top: 1em;  
  width: 420px; text-align: center;  
  font: 18px monospace;  
} 
#test > span { position: absolute; }

<span id="test">Подключать что-либо - совсем не нужно.</span>