import { getPngInfo } from '@expo/image-utils';

function assertValidPng(filePath: string) {
  try {
    getPngInfo(filePath);
  } catch (error) {
    if (error.code === 'ENOENT') {
      throw new CommandError('IMAGE_NOT_FOUND', `There was no image at ${filePath}`);
    }

    if (error.message.includes('Invalid file signature')) {
      throw new CommandError('IMAGE_CORRUPTED', `The image at ${filePath} is corrupted: ${error.message}`);
    }

    // unknown error
    throw error;
  }
}