# `declaration-output-mapped-types`

Demonstrates bug with declaration output of mapped types in TypeScript 2.3.4.

Usage:

* `npm install`
* `npm run build`
* Observe invalid syntax in `dist/index.d.ts`, which needs but lacks quotes
  around the keys in the declaration of `scopes`:

```typescript
export declare const scopes: {
    noun:verb: "noun:verb";
    verb:adjective: "verb:adjective";
    noun: "noun";
};
export declare type Scope = keyof typeof scopes;
```