Is it necessary to keep the package-lock.json file versioned in git repository?

With the arrival of npm 5 and nodejs 8, a new file called package-lock.json has been introduced. I'm curious to know if this file should be included in version control or ignored in git.

Answer №1

Short Answer : Absolutely, it is necessary.

Detailed Response :

According to the npmjs Documentation :

package-lock.json is created automatically whenever npm makes changes to either the node_modules tree or the package.json. It records the exact structure of the generated tree, ensuring that subsequent installations result in identical trees, regardless of any updates to dependencies along the way.

This file should be included in source repositories, as it serves multiple purposes:

  • It provides a consistent view of the dependency tree, ensuring that all team members, deployment processes, and CI environments install the same set of dependencies.

  • Users can use it to revert back to previous states of node_modules without needing to store the entire directory.

  • It enhances visibility of changes in the dependency tree by presenting them in a readable format within version control diffs.

  • In addition, it optimizes the installation process by allowing npm to bypass redundant metadata resolutions for packages that have already been installed.

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