tsconfig.json

{
  "compilerOptions": {
    "target": "esnext",
    "module": "commonjs",
    "strict": false,
    "sourceMap": true,
    "noImplicitAny": true,
    "noUnusedLocals": false,
    "noImplicitReturns": true,
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,     /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "experimentalDecorators": true,           /* Enables experimental support for ES7 decorators. */
    "declaration": true,
    "resolveJsonModule": true,
    "types" : [
      "node"
    ],
    "forceConsistentCasingInFileNames": true,
    "baseUrl": ".",
    "paths": {
      "@polkadot/types/augment": ["./node_modules/@joystream/types/augment-codec/augment-types.ts"]
    },
    "typeRoots": [
      "./node_modules/@polkadot/ts",
      "./node_modules/@types"
    ],
    "declarationDir": "build",
    "outDir": "build"
  },
  "include": [
    "src/*.ts"
  ],
  "exclude": [
    "node_modules",
    "**/*.spec.ts",
    "**/*.d.ts"
  ]
}