DefinitelyTyped/types/browser-image-compression/browser-image-compression-tests.ts

import imageCompression = require('browser-image-compression');

async function handleImageUpload({ target }: { target: EventTarget & { files: FileList } }) {
  const imageFile = target.files[0];
  console.log('originalFile instanceof Blob', imageFile instanceof Blob); // true
  console.log(`originalFile size ${imageFile.size / 1024 / 1024} MB`);

  const options = {
    maxSizeMB: 1,
    maxWidthOrHeight: 1920,
    useWebWorker: true
  };
  try {
    const compressedFile = await imageCompression(imageFile, options);
    console.log('compressedFile instanceof Blob', compressedFile instanceof Blob); // true
    console.log(`compressedFile size ${compressedFile.size / 1024 / 1024} MB`); // smaller than maxSizeMB

    // await uploadToServer(compressedFile); // write your own logic
  } catch (error) {
    console.log(error);
  }
}