tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "outDir": "build",
    "rootDir": ".",
    "moduleResolution": "node",
    "module": "commonjs",
    "declaration": true,
    "importHelpers": true,
    "sourceMap": true,
    "listFiles": false,
    "traceResolution": false,
    "pretty": true,
    "strictNullChecks": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny" : true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "lib" : [
      "ES2019", "dom"
    ],
    "types" : [
      "node"
    ],
    "baseUrl": ".", // required for "paths"
    "paths": {
      "typescript-starter": ["src/iland.ts"] // write tests without relative paths
    }
  },
  "include": [
    "src/**/*.ts"
  ],
  "exclude": [
    "node_modules/**",
    "**/__tests__/*",
    "**/__mocks__/*"
  ],
  "files": [
    "node_modules/@types/jest/index.d.ts"
  ],
  "compileOnSave": false
}