(node:32144) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined

[mforman1]

After upgrading commander version from 6.2.1 to 7.0.0 I get the following error:

(node:32144) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined

On the below line:

const cmd = require('commander')

 devServer: {
    contentBase: outputdir,
    open: true,
 ->   openPage: path.normalize(cmd.page),
    overlay: {
      errors: true
    },
    historyApiFallback: true
    // host: '0.0.0.0'
  },

Any idea on how to solve that?

[shadowspawn]

This is an educated guess as your program fragment does not show where cmd came from.

Try changing cmd.page to cmd.opts().page.

The default behaviour for storing options has changed. By default, option values are no longer stored as properties on the command. See the release notes and migration tips for more clues:

https://github.com/tj/commander.js/releases/tag/v7.0.0

[mforman1]

That was it, thank you!