tsconfig.json

{
  "compilerOptions": {
    "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */,
    "module": "esnext" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */,
    "allowJs": true /* Allow javascript files to be compiled. */,
    "sourceMap": false,
    "outDir": "./build/cjs",
    "declaration": false,
    "strict": true /* Enable all strict type-checking options. */,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
    "skipLibCheck": true /* Skip type checking of declaration files. */,
    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */,
    "moduleResolution": "node",
    "lib": ["dom", "es2017"],
    "removeComments": false
    // "noImplicitOverride": true, /* Introduce in the future for more type safety. Will cause >= 217 errors due to lack of "override" keyword. */
  },
  "include": ["./src", "./entry", "./tests"],
  "exclude": ["node_modules/**/*", "tools/fonts/legacy", "releases", "reference", "build"]
}