Know if the alpha is transparent

isEmpty.js

const isEmpty = (texture) => {
    const canvas = document.createElement("canvas");
    const ctx = canvas.getContext("2d");
    
    ctx.drawImage(texture.image, 0, 0);
    const data = ctx.getImageData(0, 0, texture.image.width, texture.image.height);
    const lengthData = data.data.length
    
    let numVisible = 0
     
    for(let i = 0; i < lengthData; i += 4){
   
      if(data.data[i + 3] < 10) continue
      
      numVisible++
    }

    return [data.data, numVisible]
};