@onesy/utils/esm/fileToValue.js

Utils

const fileToValue = function (file) {
  let type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'text';
  return new Promise((resolve, reject) => {
    const reader = new FileReader();

    switch (type) {
      case 'text':
        reader.readAsText(file);
        break;

      case 'binary':
        reader.readAsBinaryString(file);
        break;

      case 'array-buffer':
        reader.readAsArrayBuffer(file);
        break;

      case 'datauri':
        reader.readAsDataURL(file);
        break;

      default:
        break;
    }

    reader.onload = () => resolve(reader.result);

    reader.onerror = reject;
  });
};

export default fileToValue;