npm json file code example

Example 1: change name in package json from command line

cd some/node/project

# Get stuff from package.json
npe name
npe scripts
npe scripts.test
npe repository.url
open $(npe repository.url)

# Set stuff in package.json
npe name foo
npe scripts.start "node index.js"

# Keywords string will be turned into an array
# If commas are present, they'll be the delimiter. Otherwise spaces.
npe keywords "foo, bar, cheese whiz"
npe keywords "foo bar baz"

# The current working directory's package.json is used by default,
# but you can point to another package file with a flag:
npe name --package=some/other/package.json
npe name other --package=some/other/package.json

Example 2: what is npm init

The npm init command is a step-by-step tool to scaffold out your project. 
It will prompt you for input for a few aspects of the project 
in the following order:

The project's name,
The project's initial version,
The project's description,
The project's entry point (meaning the project's main file),
The project's test command (to trigger testing with something like Standard)
The project's git repository (where the project source can be found)
The project's keywords (basically, tags related to the project)
The project's license (this defaults to ISC - most open-source Node.js projects are MIT)

Example 3: what is package.json in node

All npm packages contain a file, usually in the project root, called package. json - this file holds various metadata relevant to the project. This file is used to give information to npm that allows it to identify the project as well as handle the project's dependencies.