tsconfig.json

{
    "compilerOptions": {
        /* Basic Options */
        "allowJs": false,
        "target": "es5" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */,
        "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
        "lib": [
            "es5",
            "es6",
            "es7",
            "esnext",
            "dom",
            "dom.iterable",
            "es2018"
        ] /* Specify library files to be included in the compilation. */,
        "declaration": true /* Generates corresponding '.d.ts' file. */,
        "sourceMap": false,
        "inlineSourceMap": false,
        "outDir": "dist" /* Redirect output structure to the directory. */,

        /* Strict Type-Checking Options */
        "strict": true /* Enable all strict type-checking options. */,
        "noImplicitAny": false /* Raise error on expressions and declarations with an implied 'any' type. */,
        "strictNullChecks": true /* Enable strict null checks. */,
        "strictFunctionTypes": false /* Enable strict checking of function types. */,
        "noImplicitThis": false /* Raise error on 'this' expressions with an implied 'any' type. */,
        "alwaysStrict": true /* Parse in strict mode and emit "use strict" for each source file. */,

        /* Additional Checks */
        "noUnusedLocals": false /* Report errors on unused locals. */,
        "noUnusedParameters": false /* Report errors on unused parameters. */,
        "noImplicitReturns": false /* Report error when not all code paths in function return a value. */,
        "noFallthroughCasesInSwitch": true /* Report errors for fallthrough cases in switch statement. */,

        /* Module Resolution Options */
        "moduleResolution": "node" /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */ /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
        "allowSyntheticDefaultImports": true /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */,
        "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    },
    "include": ["./js/*", "./test/*", "./@types/**/*"]
}