Function xhrJson

public/js/sharedDropView.js:305–345

(url, formData, onProgress)

  }

  function xhrJson(url, formData, onProgress) {
    return new Promise((resolve, reject) => {
      const xhr = new XMLHttpRequest();
      xhr.open('POST', url, true);
      if (typeof onProgress === 'function') {
        xhr.upload.addEventListener('progress', onProgress);
      }
      xhr.addEventListener('load', function () {
        let data = null;
        let rawMessage = '';
        try {
          data = JSON.parse(xhr.responseText || '{}');
        } catch (e) {
          rawMessage = String(xhr.responseText || '').replace(/\s+/g, ' ').trim();
          if (rawMessage.length > 180) {
            rawMessage = rawMessage.slice(0, 180) + '...';
          }
          data = { error: rawMessage || tx('share_upload_failed', null, 'Upload failed.') };
        }
        if (xhr.status >= 200 && xhr.status < 300 && !data.error) {
          resolve(data);
          return;
        }
        const msg = data && data.error
          ? String(data.error)
          : tx('share_upload_failed_http', {
            code: xhr.status,
            reason: tx('share_upload_failed', null, 'Upload failed.'),
          }, 'Upload failed (HTTP ' + xhr.status + ').');
        const err = new Error(msg);
        err.status = xhr.status || 0;
        reject(err);
      });
      xhr.addEventListener('error', function () {
        const err = new Error(tx('share_upload_network_error', null, 'Network error. Please check your connection and try again.'));
        err.status = 0;
        reject(err);
      });
      xhr.send(formData);
    });
  }

  const queue = [];
  const rows = new Map();