text: declare module 'he' {
    declare function escape(html: string): string;
    declare function decode(html: string): string;
  }
  
  declare module 'source-map' {
    declare class SourceMapGenerator {
      setSourceContent(filename: string, content: string): void;
      addMapping(mapping: Object): void;
      toString(): string;
    }
    declare class SourceMapConsumer {
      originalPositionFor(position: { line: number; column: number; }): {
        source: ?string;
        line: ?number;
        column: ?number;
      };
    }
  }
  
  declare module 'lru-cache' {
    declare var exports: {
      (): any
    }
  }
  
  declare module 'de-indent' {
    declare var exports: {
      (input: string): string
    }
  }
  