index.js

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

var _jpegJs = _interopRequireDefault(require("jpeg-js"));

var _utils = require("@jimp/utils");

var MIME_TYPE = 'image/jpeg';

var _default = function _default() {
  return {
    mime: (0, _defineProperty2["default"])({}, MIME_TYPE, ['jpeg', 'jpg', 'jpe']),
    constants: {
      MIME_JPEG: MIME_TYPE
    },
    decoders: (0, _defineProperty2["default"])({}, MIME_TYPE, _jpegJs["default"].decode),
    encoders: (0, _defineProperty2["default"])({}, MIME_TYPE, function (image) {
      return _jpegJs["default"].encode(image.bitmap, image._quality).data;
    }),
    "class": {
      // The quality to be used when saving JPEG images
      _quality: 100,

      /**
       * Sets the quality of the image when saving as JPEG format (default is 100)
       * @param {number} n The quality to use 0-100
       * @param {function(Error, Jimp)} cb (optional) a callback for when complete
       * @returns {Jimp} this for chaining of methods
       */
      quality: function quality(n, cb) {
        if (typeof n !== 'number') {
          return _utils.throwError.call(this, 'n must be a number', cb);
        }

        if (n < 0 || n > 100) {
          return _utils.throwError.call(this, 'n must be a number 0 - 100', cb);
        }

        this._quality = Math.round(n);

        if ((0, _utils.isNodePattern)(cb)) {
          cb.call(this, null, this);
        }

        return this;
      }
    }
  };
};

exports["default"] = _default;
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