dist/dovemax-sdk.esm.js
function (o, cb) {
    try {
      var reader = new FileReader();
      reader.onload = function (event) {
        cb && cb(reader.result);
      };
      reader.readAsText(o);
    } catch (error) {
      throw error
    }
  }
function (o, cb) {
    try {
      var reader = new FileReader();
      reader.onload = function (event) {
        cb && cb(reader.result);
      };
      reader.readAsText(o);
    } catch (error) {
      throw error
    }
  }
function ( o , cb ) { try { var reader = new FileReader ( ) ; reader . onload = function ( event ) { cb && cb ( reader . result ) ; } ; reader . readAsText ( o ) ; } catch ( error ) { throw error } }
Blob data convert to String
@param o Blob obj
@param cb callback function
Blob data convert to String