@docusaurus/responsive-loader/lib/adapters/jimp.js

A webpack loader for responsive images.

"use strict";

const jimp = require('jimp');

module.exports = imagePath => {
  const readImage = jimp.read(imagePath);
  return {
    metadata: () => readImage.then(image => ({
      width: image.bitmap.width,
      height: image.bitmap.height
    })),
    resize: ({
      width,
      mime,
      options
    }) => new Promise((resolve, reject) => {
      readImage.then(image => {
        image.clone().resize(width, jimp.AUTO).quality(options.quality).background(parseInt(options.background, 16) || 0xFFFFFFFF).getBuffer(mime, function (err, data) {
          // eslint-disable-line func-names
          if (err) {
            reject(err);
          } else {
            resolve({
              data,
              width,
              height: this.bitmap.height
            });
          }
        });
      });
    })
  };
};