jsforce-metadata-tools 
Tools for deploying/retrieving package files using Salesforce Metadata API via JSforce.
Provides command line interface (CLI) to easily deploy/retrieve packages.
Install
$ npm install jsforce-metadata-tools -g
Usage
Deploy
Deploy package from local directory
$ jsforce-deploy -u [email protected] -p ${SF_PASSWORD} -D ./path/to/packageDir
Deploy package from ZIP archive file
$ jsforce-deploy -u [email protected] -p ${SF_PASSWORD} -Z ./path/to/package.zip
Retrieve
Retrieve package files and write them under the directory
(Assuming that ./path/to/packageDir directory has a package.xml file inside)
$ jsforce-retrieve -u [email protected] -p ${SF_PASSWORD} -D ./path/to/packageDir
Retrieve package files by specifying metadata types/members to retrieve
$ jsforce-retrieve -u [email protected] -p ${SF_PASSWORD} --memberTypes "ApexClass:Class1,Class2;ApexPage:*" -D ./path/to/distDir
Retrieve package files by specifying package names to retrieve
$ jsforce-retrieve -u [email protected] -p ${SF_PASSWORD} --packageNames "Package1,Package2" -D "./path/to/distDir1,./path/to/distDir2"
Retrieve package files by specifying package.xml file
$ jsforce-retrieve -u [email protected] -p ${SF_PASSWORD} -P ./path/to/package.xml -D ./path/to/distDir
Retrieve package and output as a ZIP archive file
$ jsforce-retrieve -u [email protected] -p ${SF_PASSWORD} --packageName Package1 -Z ./path/to/package.zip
OAuth-based Authorization
Once the authorization is done in JSforce REPL, the same connection is also valid here (no password required)
$ jsforce
> .authorize
...
(OAuth authorization flow)
...
Received authorization code. Please close the opened browser window.
Authorized. Fetching user info...
Logged in as : [email protected]
> .exit
$ jsforce-deploy -c [email protected] -D ./path/to/packageDir