@yookue/ts-lang-utils/dist/esm/util/ImageUtils/detectDimension.js

Common lang utilities for typescript

import { isImage } from "./isImage";
export function detectDimension(file, resolve, reject) {
  if (!file || !isImage(file) || !resolve) {
    return;
  }
  var reader = new FileReader();
  reader.addEventListener('load', function (ev) {
    var _ev$target;
    var res = typeof ((_ev$target = ev.target) === null || _ev$target === void 0 ? void 0 : _ev$target.result) === 'string' ? ev.target.result : undefined;
    if (!res) {
      reject === null || reject === void 0 || reject();
      return;
    }
    var image = new Image();
    image.src = res;
    image.addEventListener('load', function () {
      resolve(image.naturalWidth, image.naturalHeight);
    });
    image.addEventListener('error', function (ev) {
      return reject === null || reject === void 0 ? void 0 : reject(ev);
    });
  });
  reader.addEventListener('error', function (ev) {
    return reject === null || reject === void 0 ? void 0 : reject(ev);
  });
  reader.readAsDataURL(file);
}