node/deps/npm/doc/cli/npm-run-script.md

npm-run-script(1) -- Run arbitrary package scripts

SYNOPSIS

npm run-script [<pkg>] <command>

DESCRIPTION

This runs an arbitrary command from a package's "scripts" object. If no package name is provided, it will search for a package.json in the current folder and use its "scripts" object.

It is used by the test, start, restart, and stop commands, but can be called directly, as well.

SEE ALSO

• npm-scripts(7)
• npm-test(1)
• npm-start(1)
• npm-restart(1)
• npm-stop(1)