src/dom/forms.js
function click() {
    const clickEvent = input.ownerDocument.createEvent('HTMLEvents');
    clickEvent.initEvent('click', true, true);
    const labelElementImpl = domSymbolTree.parent(idlUtils.implForWrapper(input));
    const dispatchResult = input.dispatchEvent(clickEvent);
    input._click && input._click(clickEvent);
    return dispatchResult;
  }
function click() {
    const clickEvent = input.ownerDocument.createEvent('HTMLEvents');
    clickEvent.initEvent('click', true, true);
    const labelElementImpl = domSymbolTree.parent(idlUtils.implForWrapper(input));
    const dispatchResult = input.dispatchEvent(clickEvent);
    input._click && input._click(clickEvent);
    return dispatchResult;
  }
function click ( ) { const clickEvent = input . ownerDocument . createEvent ( 'HTMLEvents' ) ; clickEvent . initEvent ( 'click' , true , true ) ; const labelElementImpl = domSymbolTree . parent ( idlUtils . implForWrapper ( input ) ) ; const dispatchResult = input . dispatchEvent ( clickEvent ) ; input . _click && input . _click ( clickEvent ) ; return dispatchResult ; }
First event we fire is click event
First event we fire is click event