Pre-lockfiles I had multiple instances of a new version of a dependency being released that didn't follow semver correctly (it can be hard to identify what cons

Pre-lockfiles I had multiple instances of a new version of a dependency being released that didn't follow semver correctly (it can be hard to identify what constitutes a breaking change at times). Without a lockfile this was a pain to fix, now you can just not merge the upgrade until the problem is resolved (rather than every branch suddenly failing)