tsconfig.json

{
    "compilerOptions": {
	"target": "es6",
	"skipLibCheck": true,
	"noImplicitAny": true,
	"noImplicitReturns": true,
	"forceConsistentCasingInFileNames": true,
	"noImplicitThis": true,
	"noUnusedParameters": true,
	"noFallthroughCasesInSwitch": true,
	"strictNullChecks": true,
//	"pretty": true
    },
    "files": [ "csrankings.ts", "continents.ts" ],
    "moduleResolution": "node"
}