Made of little things.

// Explicit firing inputs: letting go of the field only drops cargo.
export async function fireKeyboard(page){
 await page.keyboard.down('KeyF');await page.clock.runFor(25);await page.keyboard.up('KeyF');
}
export async function fireTouch(page,frame,cdp,held){
 const r=await frame.locator('#fireButton').boundingBox();
 await cdp.send('Input.dispatchTouchEvent',{type:'touchStart',touchPoints:[...held,{id:99,x:r.x+r.width/2,y:r.y+r.height/2,radiusX:4,radiusY:4,force:1}]});
 await page.clock.runFor(25);
}