fs-util.cjs

const fs = require('fs');

const hashedFilePattern = (prefix, suffix) =>
  new RegExp(`${prefix}([^.]+)\.${suffix}`);

const vendorJsPattern = hashedFilePattern('vendor.', 'js');
const bundleJsPattern = hashedFilePattern('bundle.', 'js');

const filteredFiles = (folder, pattern) =>
  fs.readdirSync(folder).filter((f) => pattern.test(f));

module.exports.getVendorJs = (folder) =>
  filteredFiles(folder, vendorJsPattern)[0];
module.exports.getBundleJs = (folder) =>
  filteredFiles(folder, bundleJsPattern)[0];

module.exports.getHashedFile = (folder, prefix, suffix) =>
  filteredFiles(folder, hashedFilePattern(prefix, suffix))[0];

module.exports.getVueSequenceBundleJsHash = (folder) =>
  filteredFiles(folder, vueSequenceBundleJsPattern).map(
    (f) => vueSequenceBundleJsPattern.exec(f)[1],
  )[0];