`npm dedupe` is a command that attempts to simplify the structure of the local package tree by moving dependencies higher up. This allows for more effective package sharing, less transfer, and smaller `node_modules` folders.
This change configures npm to `prefer-dedupe` by default so that these benefits persist and the command is not required to be run regularly.
This also brings better alignment with the Gutenberg repository, which has already configured `prefer-dedupe`.
Props jonsurrell.
Fixes#62190.
Built from https://develop.svn.wordpress.org/trunk@59207
git-svn-id: http://core.svn.wordpress.org/trunk@58602 1a063a9b-81f0-0310-95a4-ce76da25c4cd
desrosj
kevin940726
noisysocks