tsconfig.json

{
  "compilerOptions": {
    /* Language and Environment */
    "target": "esnext",                               /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
    "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */

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

    /* Emit */
    "outDir": "./build",                              /* Specify an output folder for all emitted 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. */
    "noImplicitAny": true,

    /* Completeness */
    "skipLibCheck": false                              /* Skip type checking all .d.ts files. */
  }
}