jsupdate

README

jsupdate

jsupdate is a tool for keeping your package.json file updated without breaking everything.

For projects of sufficient size, just running yarn upgrade will break your code. jsupdate can figure out which updates are safe to apply, and which are not.

Usage

$ go get github.com/crewjam/jsupdate
$ jsupdate

Command Line Options

• -c - The root directory of the module to update (default ".")
• -test - The command that evaluates if an update works (default "yarn test")
• -commit - Commit changes on success
• -v - Show output from test command

How it works

First, we run npm outdated to determine which packages are to be upgraded. Then we check that candidate set of upgrades to see if the tests pass. If the tests do not pass, we split the upgrades in half (bisect them), and check each half separately. We repeat this process until we have a list of good and bad updates. Finally, we reset package.json to that it contains only the good updates.