get-asset-hash.js

/*
  Copyright 2018 Google LLC

  Use of this source code is governed by an MIT-style
  license that can be found in the LICENSE file or at
  https://opensource.org/licenses/MIT.
*/

const crypto = require('crypto');

/**
 * @param {WebpackAsset} asset
 * @return {string} The MD5 hash of the asset's source.
 *
 * @private
 */
module.exports = (asset) => {
  // TODO: Check asset.info.immutable and use null when set.
  // if (asset.info.immutable) {
  //   return null;
  // }

  return crypto.createHash('md5')
      .update(Buffer.from(asset.source.source()))
      .digest('hex');
};