tsconfig.json

{
  "compilerOptions": {
      "module": "commonjs",
      "target": "esnext",
      "pretty": true,
      "noImplicitAny": false,
      // These settings are required for TypeScript project references
      "declaration": true,
      "declarationMap": true,
      "sourceMap": true,
      "resolveJsonModule": true,
      "esModuleInterop": true,
      "moduleResolution": "node",
      "allowJs": true,
      "skipLibCheck": true,
      "allowSyntheticDefaultImports": true,
      "strict": true,
      "forceConsistentCasingInFileNames": true,
      "isolatedModules": true,
      "types": ["@nomiclabs/hardhat-ethers", "@nomiclabs/hardhat-waffle"],
      "strictNullChecks": false
  },
  "angularCompilerOptions": {
      "strictNullChecks": false
  },
  "exclude": ["dist", "node_modules"],
  "include": ["./test", "./src", "./scripts"],
  "files": ["./hardhat.config.ts"]
}