Review fix(arborist): preserve `bundleDependencies: true` when saving package.json (#9958)

This work implements [BUG] `bundleDependencies: true` changed back into an array after `npm install --save` (open)

Is there an existing issue for this?

[X] I have searched the existing issues

This issue exists in the latest npm version

[X] I am using the latest npm

Current Behavior

bundleDependencies gets normalized into an array when package.json is saved.

Expected Behavior

bundleDependencies remains true.

Steps To Reproduce

Have bundleDependencies: true in your package.json
npm install a new dependency

Environment

npm: 9.6.5
Node.js: 18.14.2
OS Name: macOS
System Model Name:
npm config: ini ; copy and paste output from `npm config ls` here

36degrees authored

of work during September 9

npm/cli

preserve-bundle-dependencies-true

Diff Delta:

About 51 Diff Delta/hour

Classified as: Bug Fix

36degrees' Description of Work #6498 [BUG] `bundleDependencies: true` changed back into an array after `npm install --save`

If the original package.json used bundleDependencies: true, preserve that boolean value when updating package.json, rather than overwriting it with the normalized list of packages.

[!NOTE]
This is my first time contributing to the codebase – please review with this in mind. I had some help from CoPilot understanding the codebase and where the change should be made, but the code changes are my own.

References

Fixes #6498

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fix(arborist): preserve `bundleDependencies: true` when saving package.json #9958