lib/converter.js

import sharp from "sharp";
import fetch from "node-fetch";

function convertWebpToPng(input) {
  return new Promise(async(resolve, reject) => {
    try {
      if (typeof input === "string") {
        const response = await fetch(input);
        const images = await response.arrayBuffer();
        const converting = await sharp(images);
        const converted = await converting.toFormat('png').png({ quality: 90 }).toBuffer();
        resolve(converted);
      } else if (typeof input === "object") {
        const converting = await sharp(input);
        const converted = await converting.toFormat('png').png({ quality: 90 }).toBuffer();
        resolve(converted);
      }
    } catch (e) {
      reject(e.message);
    }
  });
}

export { convertWebpToPng };