tsconfig.json

{
  "compilerOptions": {
    // Compilation Configuration
    "target": "es2015",
    "module": "es2015",
    "inlineSources": true,
    "inlineSourceMap": true,
    "outDir": "dist",
    "baseUrl" : "packages",
    "rootDir": "packages",

    // Environment Configuration
    "experimentalDecorators": true,
    "moduleResolution": "node",

    // Enhance Strictness
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "allowUnreachableCode": false,
    "strictNullChecks": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,

    "newLine": "LF",
    "noEmit": true,
    "allowJs": false,

    "paths": {
      "*": ["*/lib"]
    }
  },

  "files": [
    "packages/ember-glimmer/externs.d.ts",
    "packages/ember-glimmer/lib/index.ts"
  ]
}