Steps to reproduce:

1. Set up a hello-world TSTL project.
2. Add "resolveJsonModule": true to the tsconfig.json file.
3. Make a sample JSON file, something like:

{
  "things": [
    {
      "foo": 1,
      "bar": 2
    },
    {
      "foo": 1,
      "bar": 2
    }
  ]
}

4. Use the following main.ts file:

import * as thingsJSON from "./things.json"

print(thingsJSON.things[0].foo);

5. Compile the project, which will produce a main.lua file and a 0 byte things.json file in the output directory.