text: /*
   * Copyright 2021 Google LLC
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
   * External dependencies
   */
  import { encode } from 'blurhash';
  
  const callback = function (event) {
    const { image, width, height, componentX, componentY } = event.data;
  
    // Bail early if the message is not for us.
    if (!image) {
      return;
    }
  
    try {
      const blurHash = encode(image, width, height, componentX, componentY);
      postMessage({
        type: 'success',
        blurHash,
      });
    } catch (error) {
      postMessage({
        type: 'error',
        error,
      });
    }
  };
  
  self.addEventListener('message', callback);
  
  // Only needed for Rollup, not webpack v4.
  export default { callback };
  