I won't copy the official node description, so here it is.
The added stuff ? The
json-diff tool, with an addition of mine : to test only a subkey of the JSON file.
Use case :
You have a CI pipeline, but
npm install and
npm update at each run is driving you nuts by their slowness ? Just cache the
package.json file between builds and compare the
devDependencies keys between the current and the cached