S1. F04. example of implicitAnyIndex in TypeScript (ARTICLE: TS-Module w/ Declarations (Part 1/4))

tgr_tsmod_1.04.ts

/** TS-Module w/ Declarations (Part 1/4)
  * http://TGRstack.com/#ts-module_articles_part-1
  * example of ENUM w/ Redux ./tsconfig.json (Section 1. Figure 04.)
**/
interface ISomeObject {
    firstKey:      string;
    secondKey:     string;
    thirdKey:      string;
    [key: string]: string;
}