message: Update db-diskdown base64 filepath encoding
diff: @@ -36,12 +36,19 @@ class DiskDown extends AbstractLevelDOWN {
  this._store = new LRUMap(LRU_SIZE);
  }
  - __getFilePath (key: Buffer, doExistence: boolean): FilePath {
  + private __keyToString (key: Buffer): string {
  + return key
  + .toString('base64')
  + .replace(/\+/g, '-')
  + .replace(/\//g, '_');
  + }
  +
  + private __getFilePath (key: Buffer, doExistence: boolean): FilePath {
  // NOTE We want to limit the number of entries in any specific directory. Split the
  // key into parts and use this to construct the path and the actual filename. We want
  // to limit the entries per directory, but at the same time minimize the number of
  // directories we need to create (when non-existent)
  - const parts = key.toString('base64').replace('+', '-').replace('/', '_').match(/.{1,2}/g) || [];
  + const parts = this.__keyToString(key).match(/.{1,2}/g) || [];
  const directoryPath = `${this.location}/${parts.slice(0, 3).join('/')}`;
  const filePath = `${directoryPath}/${parts.slice(3).join('')}`;
  let directoryExists = false;
  