tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */
    "target": "es6",
    /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'. */
    "module": "commonjs",
    /* Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es2015'. */
    "lib": ["dom", "es5", "es6", "esnext.asynciterable"],
    /* Specify library files to be included in the compilation:  */
    "sourceRoot": "./src/",
    /* Specify the location where debugger should locate TypeScript files instead of source locations. */
    "outDir": "./build/",
    /* Do not emit comments to output. */
    "strict": false,
    /* Enable all strict type-checking options. */
    "noImplicitAny": true,
    /* Raise error on expressions and declarations with an implied 'any' type. */
    "inlineSourceMap": true,
    /* Emit a single file with source maps instead of having a separate file. */
    "inlineSources": true,
    /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
    "typeRoots": ["./node_modules/@types", "typings"],
    /* List of folders to include type definitions from. */
    "experimentalDecorators": true,
    /* Enables experimental support for ES7 decorators. */
    "emitDecoratorMetadata": true,
    /* Enables experimental support for emitting type metadata for decorators. */
    "checkJs": false,
    "skipLibCheck": true,
    "allowSyntheticDefaultImports": true,
    "incremental": true,
    "tsBuildInfoFile": "./node_modules/.cache/typescript"
  },
  "include": ["./typings/**/*", "./src/**/*"],
  "exclude": ["node_modules"]
}