Lock down dependency versions for publication.
npm shrinkwrap
This command repurposes package-lock.json into a publishable npm-shrinkwrap.json or simply creates a new one. The file created and updated by this command will then take precedence over any other existing or future package-lock.json files. For a detailed explanation of the design and purpose of package locks in npm, see npm-package-locks.
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https://docs.npmjs.com/cli/shrinkwrap