tsconfig.json

{
  "compilerOptions": {
    /* Visit https://aka.ms/tsconfig.json to read more about this file */

    /* Language and Environment */
    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "allowJs": true,

    /* Modules */
    "module": "commonjs",                                /* Specify what module code is generated. */
    "resolveJsonModule": true,                        /* Enable importing .json files */

    /* Interop Constraints */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */

    /* Type Checking */
    "strict": true,                                      /* Enable all strict type-checking options. */

    /* Completeness */
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  },
  "include": ["./test", "./typechain-types"],
  "exclude": ["./node_modules/**"],
  "files": ["./hardhat.config.ts"]
}