Building Enterprise JavaScript Applications

Package version locking

When we specify our dependencies inside our package.json file, we can use symbols to indicate a range of acceptable versions. For example, >version means the installed version must be greater than a certain version, ~version means approximately equivalent (which means it can be up to the next minor version), and ^version means compatible (which usually means the highest version without a change in the major version). This means that given the same package.json file, it's likely that you'll install a different set of package versions than your colleagues.

yarn, by default, creates a lock file, yarn.lock. The lock file ensures that the exact version of every package is recorded, so that everyone who installs using the ...