TypeScript strictNullChecks: true doesn't like GluegunToolbox

[jamonholmgren]

Our GluegunToolbox (aka GluegunRunContext) has many optional properties that hold extensions.

export interface GluegunToolbox {
  // known extensions
  filesystem?: GluegunFilesystem
  http?: GluegunHttp
  meta?: GluegunMeta
  patching?: GluegunPatching
  print?: GluegunPrint
  prompt?: GluegunPrompt
  semver?: GluegunSemver
  strings?: GluegunStrings
  system?: GluegunSystem
  template?: GluegunTemplate
  generate?: any

If you turn on strictNullChecks in TypeScript, TypeScript will complain about every tool you use.

const { print } = toolbox
print.info('hello')

error TS2532: Object is possibly 'undefined'.

This would require people to either turn off strictNullChecks or build their own toolbox, which is what I'm going to recommend for Solidarity. Here's the PR: https://github.com/infinitered/solidarity/pull/177

I would like to bring it up for discussion here, though, since this could affect other Gluegun-powered TypeScript CLIs in the future.