renovate/lib/workers/repository/extract/file-match.js

const minimatch = require('minimatch');

module.exports = {
  getIncludedFiles,
  filterIgnoredFiles,
  getMatchingFiles,
};

function getIncludedFiles(fileList, includePaths) {
  if (!(includePaths && includePaths.length)) {
    return fileList;
  }
  return fileList.filter(file =>
    includePaths.some(
      includePath => file === includePath || minimatch(file, includePath)
    )
  );
}

function filterIgnoredFiles(fileList, ignorePaths) {
  if (!(ignorePaths && ignorePaths.length)) {
    return fileList;
  }
  return fileList.filter(
    file =>
      !ignorePaths.some(
        ignorePath => file.includes(ignorePath) || minimatch(file, ignorePath)
      )
  );
}

function getMatchingFiles(fileList, manager, fileMatch) {
  let matchedFiles = [];
  for (const match of fileMatch) {
    logger.debug(`Using file match: ${match} for manager ${manager}`);
    matchedFiles = matchedFiles.concat(
      fileList.filter(file => file.match(new RegExp(match)))
    );
  }
  // filter out duplicates
  matchedFiles = matchedFiles.filter(
    (item, pos) => matchedFiles.indexOf(item) === pos
  );
  return matchedFiles;
}