Implies always fails when the value key is a nested value

Take the following Yargs code/configuration:

import * as yargs from 'yargs';
const argv = yargs
    .option('calibration', {
        type: 'boolean'
    })

    .options('orientation.calibration', {
        describe: 'What Interface Orientation was calibration locked to',
        choices: ['left', 'right']
    })

    .implies('calibration', 'orientation.calibration')
    .argv

The following script call should work, but fails.

$ ./run.js --calibration --orientation.calibration "left"

Options:
  --orientation.calibration  What Interface Orientation was calibration locked
                             to                       [choices: "left", "right"]

Implications failed:
  calibration -> orientation.calibration

The error seems to lie in the Validator, specifically validation.implications, as it doesn't check for nested values.

I.E. argv['orientation.calibration'] instead of argv.orientation.calibration

Locate the validator code responsible for validation.implications and trace how it checks the implied option values. Reproduce the reported command with a nested option, then verify that the implication succeeds for orientation.calibration while preserving the existing behavior for non-nested values.