bracket notation not transpiled correctly

[Traigor]

Describe the bug
Bracket notation of array is not being transpiled correctly to typescript.

To Reproduce
If anyone write the following line in bl:

this.modules[0] = module;

In typescript will be generated this:

this.props.modules; 
[0] = module;

Expected behavior
In typescript should have been generated the following line:

this.props.modules[0] = module;