typedefs: Command and Option types added to commander namespace

[jsamr]

Before commit, the constructor is resolved but not the type¹

After commit, the type Command is resolved

The goal of this typedef enhancement is to allow the library consumer to use Command and Option types which he cannot yet use, in peculiar when receiving action callback arguments.
The way I do this is by creating a local namespace which contains class definitions and to cast those definition to a type (i.e. interface) in the commander namespace. By doing so, the types are accessible to library consumer.

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¹ with typescript 2.5.3 and CommonJS modules

[ball6847]

How long it's gonna take before releasing the next version ?

I'm facing this problem and looking forward to use this.

Thanks