One-liner to install peerDependencies

The command is:

node -e “console.log(Object.keys(require(‘./package.json’).peerDependencies).join(‘ ‘))” | xargs yarn add

How it works

Let’s say we have peerDependencies in our package.json like this:

…
},
“peerDependen…


This content originally appeared on DEV Community and was authored by matoruru

The command is:

node -e "console.log(Object.keys(require('./package.json').peerDependencies).join(' '))" | xargs yarn add

How it works

Let's say we have peerDependencies in our package.json like this:

    ...
  },
  "peerDependencies": {
    "react": "^17.0.2",
    "react-dom": "^17.0.2"
  }
}

We'll see one by one:

  1. Load the package.json and get the peerDependencies.

    Welcome to Node.js v15.14.0.
> require('./package.json').peerDependencies
{ react: '^17.0.2', 'react-dom': '^17.0.2' }

  2. Object.keys function collects the keys of the object and put them together in the array.

    Welcome to Node.js v15.14.0.
> Object.keys({ react: '^17.0.2', 'react-dom': '^17.0.2' })
[ 'react', 'react-dom' ]

  3. join method joins the elements with the given string.

    > [ 'react', 'react-dom' ].join(' ')
'react react-dom'

  4. node -e evaluates the given script.

    $ node -e "console.log('react react-dom')"
'react react-dom'

  5. Pass it to the yarn add with xargs.

    $ node -e "console.log('react react-dom')" | xargs yarn add
yarn add v1.22.5
[1/4] Resolving packages...
[2/4] Fetching packages...
[########------------------

Done ?


This content originally appeared on DEV Community and was authored by matoruru


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