tsconfig.json

{
    "compilerOptions": {
        /* Basic Options */
        // "incremental": true, /* Enable incremental compilation */
        "target": "ES2019" /* 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'. */,
        "allowJs": true /* Allow javascript files to be compiled. */,
        "checkJs": true /* Report errors in .js files. */,
        "sourceMap": true /* Generates corresponding '.map' file. */,
        "outDir": "./dist" /* Redirect output structure to the directory. */,
        "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,

        /* Strict Type-Checking Options */
        "strict": true /* Enable all strict type-checking options. */,
        // turn off for migrating over time
        "noImplicitAny": false /* Raise error on expressions and declarations with an implied 'any' type. */,

        /* Module Resolution Options */
        "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,

        /* Advanced Options */
        "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */,
        "resolveJsonModule": true
    },
    "include": ["./src/**/*"],
    "exclude": ["node_modules"]
}