Answers for "update npm packages in package.json"

upgrade all packages in package.json

npm install -g npm-check-updates
ncu -u
npm install

update all packages in package.json

//To install major updates globally
npm install -g npm-check-updates

//To see a list of outdated packages
npm outdated

//To update the packages to their latest versions in package.json
ncu -u

//To install the new updates
npm update 	or 	npm install

how to update my package.json

npm install -g npm-check-updates
/after install run following:
ncu -u

//Then this:
npm update

npm update package.json version field by code

# From 1.0.0 -> 1.0.1
npm version patch 

# From 1.0.1 -> 1.1.0
npm version minor

# From 1.1.0 -> 2.0.0
npm version major