[IDEA] $t to effectively add optional chaining

[MichaelLeeHobbs]

Is your feature request related to a problem? Please describe.
Mirth lacks optional chaining as Rhino lacks it. It is an extremely useful feature that saves a lot of typing

Describe your use case
Currently to safely access sub props you must use the es5 way to access the sub prop to avoid throwing if a parent prop is undefined

var d = (a && a.b && a.b.c) || undefined

// or
var d

try {
  d = a.b.c
} catch (ignore) {
}

Describe the solution you'd like
Add the following script as part of the default environment.

/**
 * $t is an inline try/catch to take the place of optional chaining ie var d = $t(()=> a.b.c) is the same as var d = a?.b?.c
 */
function $t(cb) {
  try {
    return cb()
  } catch (ignore) {
    // do nothing
  }
}

This would enable the following

var d = $t(()=> a.b.c)

// or 
var d = $t(()=> a.b.c) || 'default value'

It also enables other use cases beyond what standard optional chaining allows ie running unsafe code in a compact way.

var result = $t(() => someInstance.unsafeFunction())
if (result) {
  // do something
}

Describe alternatives you've considered
It's quite easy to add a global code template to add $t in but it has been so useful and would be very simple for the Connect team to add I believe it should be a core method in Connect.