Steer clear of including optional dependencies when using Yarn for package installations

Within my yarn.lock file, there is a single reference to momentjs:

pikaday@^1.6.0:
  version "1.6.1"
  resolved "https://registry.yarnpkg.com/pikaday/-/pikaday-1.6.1.tgz#b91bcb9b8539cedd8dd6d08e4e7465e12095671b0"
  optionalDependencies:
    moment "2.x"

After deleting the entire node_modules folder and the yarn.lock file, I executed yarn --ignore-optional. However, the new yarn.lock generated still contains the same lines, prompting the installation of moment in my node_modules directory, leading to its inclusion in my bundle.

The version of yarn being used is 0.27.5.

How can I prevent the installation of this optional dependency?

javascriptyarnpkg

Answer №1

Yarn actually reveals all optional dependencies in the yarn.lock file. Nonetheless, activating the --ignore-optional flag prevents those modules from being installed in the node_modules directory.

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