create-hmac typescript default import

index.ts

import createHmac from "create-hmac";
const hmac = createHmac("sha256", "hello world").update("I love cupcakes").digest("hex");
console.log(hmac);

package.json

{
  "name": "scratch-hmac",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "ts-node --files --project ./tsconfig.json index.ts"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "create-hmac": "^1.1.7"
  },
  "devDependencies": {
    "@types/node": "^10.9.2",
    "ts-node": "^7.0.1",
    "typescript": "^3.0.1"
  }
}

polyfill.d.ts

import createHmac from "create-hmac";
const hmac = createHmac("sha256", "hello world").update("I love cupcakes").digest("hex");
console.log(hmac);

tsconfig.json

{
    "compilerOptions": {
      "declaration": true,
      "module": "commonjs",
      "moduleResolution": "node",
      "noImplicitAny": true,
      "outDir": "./lib",
      "preserveConstEnums": true,
      "removeComments": false,
      "target": "es6",
      "sourceMap": true,
      "newLine": "LF",
      "lib": ["es6", "esnext.asynciterable"],
      // Enable support for importing CommonJS modules targeting es6 modules
        "esModuleInterop": true,

        // When using above interop will get missing default export error from type check since
        // modules use "export =" instead of "export default", enable this to ignore errors.
        "allowSyntheticDefaultImports": true
    },
    "include": ["./**.ts"],
    "exclude": ["node_modules", "samples"]
  }