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In short: When present in the project, yarn. lock is the main source of information about the current versions of dependencies in a project. Yarn uses that information to check if it needs to update anything – it compares dependency versions currently installed in a project (listed in yarn.
lock was yaml, it's actually not. It's almost yaml. Pipenv, which is heavily inspired by yarn, uses json for its lockfile which makes it very easy to parse. I suggest either using json or yaml for the lockfile v2.
A lock file contains important information about installed packages and it should always be committed into your Package Manager source repositories. Not committing the lock file to your source control results in installing two different modules from the same dependency definition.
lock file is auto-generated and should be handled entirely by Yarn. As you add/upgrade/remove dependencies with the Yarn CLI, it will automatically update your yarn. lock file. Do not edit this file directly as it is easy to break something.
For some reason, the command yarn is modifying the file yarn.lock with a new property to every dependency: integrity.
Git diff:
+integrity sha1-zgBCgEX7t9AxwWp7+DV4nxU2arI=
I couldn't find documentation about it so my question is - What is it?
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