@vitbokisch/next-optimized-images/src/migrater.js

Automatically optimize images used in next.js projects (jpeg, png, gif, svg).

import chalk from 'chalk'
import figures from 'figures'

const prefix = `${chalk.gray('next-optimized-images')} ${chalk.red(
  figures.pointer
)}`

/**
 * Output a warning when images should get optimized (prod build) but no optimization
 * package is installed.
 */
const showWarning = () =>
  console.log(
    // eslint-disable-line no-console
    `${prefix} ${chalk.red('WARNING!')}
${prefix} ${chalk.red('No package found which can optimize images.')}
${prefix} Starting from version ${chalk.cyan('2')} of ${chalk.cyan(
      'next-optimized-images'
    )}, all optimization is optional and you can choose which ones you want to use.
${prefix} For help during the setup and installation, please read ${chalk.underline(
      'https://github.com/cyrilwanner/next-optimized-images#optimization-packages'
    )}

${prefix} If you recently ${chalk.cyan(
      'updated from v1 to v2'
    )}, please read ${chalk.underline(
      'https://github.com/cyrilwanner/next-optimized-images/blob/master/UPGRADING.md'
    )}
${prefix} If this is on purpose and you don't want this plugin to optimize the images, set the option ${chalk.cyan(
      '`optimizeImages: false`'
    )} to hide this warning.
`
  )

export { showWarning }