tsconfig.json

{
    "compilerOptions": {
        "module": "CommonJS",
        "noImplicitAny": true,  // more robust type checking rules
        "removeComments": false,
        "sourceMap": true,
        "esModuleInterop": true,
        "moduleResolution": "node",     // allows us to import without errors
        "target": "ES6",
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,
        "outDir": "dist",
        "baseUrl": ".",      // tells compiler to search from same directory as tsconfig.json
        "paths": {
            "*": ["node_modules/*"]
        }
    },
    "include": [
        "src/**/*" // ** means match all files in src's subdirectories recursively
, "test/api/LockerService.ts"    ],
    "exclude": [
        "node_modules",
        "test/**/*.ts"  // tests are executed via ts-node-dev using jit compilation for simplicity. 
    ]
}