How to use the jimp.HORIZONTAL_ALIGN_CENTER function in jimp

const file = ctx.request.body.files && ctx.request.body.files.file

      let user = ctx.req.user

      if (!user) throw new NotFoundError('No active user session')
      if (!file) throw new InvalidBodyError('Request doesn\'t include an image file')

      user = await User.findOne({where: {id: user.id}})

      const newFilePath = file.path + '_square.' + file.type.split('/')[1]

      // Resize
      try {
        const image = await jimp.read(file.path)

        image.cover(200, 200, jimp.HORIZONTAL_ALIGN_CENTER, jimp.VERTICAL_ALIGN_TOP)
          .write(newFilePath, err => {
            if (err) {
              console.log('auth:197', newFilePath, err)
            }
          })
      } catch (e) {
        throw new InvalidBodyError('Unsopported image format')
      }

      user.profile_picture = path.basename(newFilePath)

      try {
        await user.save()
      } catch (e) {
        console.log('auth.js:191', e)
      }

async function createCover() {

    // load font and our base cover image
    // we put subreddit into this image
    const font = await Jimp.loadFont(Jimp.FONT_SANS_64_BLACK);
    const image = await Jimp.read("./cover/Reddit2Ebook.jpg");

    await image.print(
        font,
        0, // x
        600, // y
        {
            text: subreddit,
            alignmentX: Jimp.HORIZONTAL_ALIGN_CENTER,
            alignmentY: Jimp.VERTICAL_ALIGN_MIDDLE
        },
        782, // maxWidth (use same width as base cover image to center correctly)
        200  // maxHeight
    )
      .quality(80) // set JPEG quality. We don't need very high quality output.
      .write("./cover/cover.jpg");

}

const Jimp = require('jimp');

const RESIZE_MODES = [
  Jimp.HORIZONTAL_ALIGN_LEFT,
  Jimp.HORIZONTAL_ALIGN_CENTER,
  Jimp.HORIZONTAL_ALIGN_RIGHT,

  Jimp.VERTICAL_ALIGN_TOP,
  Jimp.VERTICAL_ALIGN_MIDDLE,
  Jimp.VERTICAL_ALIGN_BOTTOM
];

const FIELD_CONFIGS = {
  width: {
    type: 'integer',
    min: 1,
    max: 4096,
    required: true,
    default: 150
  },
  height: {