Edit: Since the project is built with gulp, it looks like you need to uprade the gulp dependencies. Some of them don't seem to receive updates anymore. It's all a bit messy. For example eslint is used by gulp-eslint, but the package is abandoned. In general, Gulp seems to have lost a lot of steam.
There are a lot of major version bumps which require new node versions, breaking changes etc. This needs to be tackled manually.
Edit: Since the project is built with gulp, it looks like you need to uprade the gulp dependencies. Some of them don't seem to receive updates anymore. It's all a bit messy. For example
eslint
is used bygulp-eslint
, but the package is abandoned. In general, Gulp seems to have lost a lot of steam.