tsconfig.json

{
  "compilerOptions": {
    "target": "es2019",
    "allowJs": false,
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,
    "noImplicitAny": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "noFallthroughCasesInSwitch": true,
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noEmitOnError": false,
    "noEmit": true,
    "declaration": true,
    "inlineSourceMap": true,
    "inlineSources": true,
    "module": "ES2015",
    "paths": {
      "dummy/tests/*": [
        "./tests/*"
      ],
      "dummy/*": [
        "./tests/dummy/app/*",
        "./app/*"
      ],
      "@ember/test-helpers": [
        "./addon-test-support/@ember/test-helpers"
      ],
      "@ember/test-helpers/*": [
        "./addon-test-support/@ember/test-helpers/*"
      ],
      "@ember/destroyable": ["./node_modules/ember-destroyable-polyfill"],
      "*": [
        "./types/*",
        "./node_modules/@types/*"
      ]
    }
  },
  "exclude": [
    "node_modules"
  ],
  "include": [
    "./addon-test-support/**/*.ts"
  ]
}