Downgrade your yarn.lock to v1

Purpose

Not intended to be used daily, because Yarn V2 is great.

However, we are always fearful when upgrading something important. With yarn-lock-v1 you can say "don't worry, we can always go back to Yarn V1 if something goes wrong".

Usage

$ npx yarn-lock-v1

yarn-lock-v1 automatically generates a back up if the destination (yarn.lock by default) already exists.

You can specify a different input or a different output.

$ npx yarn-lock-v1 -f yarn.lock.v2 -o yarn.lock.v1

yarn-lock-v1 also sees your .yarnrc.yml for credentials if necessary. You can specify a different location for the rc.

$ npx yarn-lock-v1 -c ../somewhere/.yarnrc.yml