'require' keyword doesn't work within Node Red Function node

Question

first line in a Node red Function Node is

var moment = require(\'moment-timezone\');

...

I am trying to establish a timezone correct date/time stamp

Answer 1

As this GitHub issue answer states, you cannot use require itself inside a function node, but you can add external modules to the sandbox used to run functions. You would do this setting functionGlobalContext inside your settings.js file like the following:

functionGlobalContext: {
    tzModule:require('moment-timezone')
}

The module can then be referenced by using the following code:

var moment = global.get('tzModule');

Check out the Node-RED documentation on global-context for full details.