tsconfig.json

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

    /* Basic Options */
    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
    "lib": ["es6"],                           /* Specify library files to be included in the compilation. */
    "allowJs": true,                          /* Allow javascript files to be compiled. */
    "rootDir": "./src",
    "outDir": "./build",                      /* Redirect output structure to the directory. */
    "strict": true,                           /* Enable all strict type-checking options. */
    "noImplicitAny": true,                    /* Raise error on expressions and declarations with an implied 'any' type. */
    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    /* Advanced Options */
    "resolveJsonModule": true,                /* Include modules imported with '.json' extension */
    "skipLibCheck": true,                     /* Skip type checking of declaration files. */
    "forceConsistentCasingInFileNames": true, /* Disallow inconsistently-cased references to the same file. */
    "strictNullChecks": true,                 /* In strict null checking mode, null and undefined are no longer assignable to every type. */
    "composite": true
  },
  "exclude": [
    "node_modules/**/*",
    "test/**/*",
    "**/*spec.ts",
    "build/**/*"
  ],
  "include": [
    "src/**/*.ts",
    "src/**/*.json"
  ]
}