some npm-assets are broken lately by "Unknown downloader type: npm-signature" error

[swayok]

Here is what i have in console:

Updates: npm-asset/bootstrap-select:1.13.1, npm-asset/moment:2.22.1, npm-asset/bootstrap-fileinput:4.4.8, npm-asset/ionicons:4.1.2

• Removing npm-asset/bootstrap-select (1.12.4)

[InvalidArgumentException]
Unknown downloader type: npm-signature. Available types: git, svn, fossil,
hg, perforce, zip, rar, tar, gzip, xz, phar, file, path.

Exception trace: () at phar://E:/OpenServer/modules/php/PHP-7.1-x64/composer.phar/src/Composer/Downloader/DownloadManager.php:128 Composer\Downloader\DownloadManager->getDownloader() at phar://E:/OpenServer/modules/php/PHP-7.1-x64/composer.phar/src/Composer/Downloader/DownloadManager.php:152

Same issue happens for fxpio/composer-asset-plugin but some people say it was solved. Also I do not have fxpio/composer-asset-plugin installed

[vinpel]

fxpio issue : https://github.com/fxpio/composer-asset-plugin/issues/321

the root of the change : https://blog.npmjs.org/post/172999548390/new-pgp-machinery

[hiqsol]

See #80