Debugging VS Code with Typescript shows transpiled variable names instead of real names

I'm struggling to find the right configuration such that VS Code will show me the real variable name for debugging.

In the attached image, I should be able to see the conn (for example) variable but the debugger is showing the transpiled version exports.conn.

//tsconfig.json
{
    "compilerOptions": {
        "baseUrl": ".",
        "target":"es6",
        "module":"commonjs",
        "noImplicitAny": false,
        "removeComments": true,
        "preserveConstEnums": true,
        "sourceMap": true,
        "outDir": "dist",
        "moduleResolution": "node",
        "allowJs": false,
        "allowSyntheticDefaultImports": false,
        "esModuleInterop": false,
        "jsx": "react"
    },
    "include": [
        "web/**/*",
        "logger/**/*",
        "controller/**/*",
        "config/**/*",
        "**/*.ts"

    ]
}

// VS Code launch.json
      ...
               {
            "type": "node",
            "request": "launch",
            "name": "Launch Program",
            "program": "${workspaceFolder}/app.ts",
            "console": "integratedTerminal",
            "outFiles": ["${workspaceFolder}/dist/**/*"]
        }

UPDATE: I'm not convinced this is a VS Code problem. If I run the app from a terminal with node dist/app and get a stack trace it doesn't point back to the original TS files but rather the compiled JS files.

SyntaxError: Unexpected end of JSON input
    at JSON.parse (<anonymous>)
    at new Config (/Users/zzz/Documents/programming/dist/config/Config.js:10:56)
    at Object.<anonymous> (/Users/zzz/Documents/programming/dist/config/Config.js:43:18)

UPDATE 2: I fixed the CLI problem by moving require('source-map-support').install(); to be my very first import. Now the CLI output does show the correct line/stack trace back through the the .ts files but the same problem still exists in VS Code.