Reproduction of pact-js missing type definitions

mytest.spec.ts

import { Pact } from "@pact-foundation/pact";

package.json

{
  "name": "pact-js-peer-types",
  "version": "1.0.0",
  "description": "Reproduction of missing typescript peer types",
  "private": true,
  "license": "UNLICENCED",
  "author": "Zachary Sims",
  "keywords": [],
  "dependencies": {
  },
  "devDependencies": {
    "@pact-foundation/pact": "^5.3.1",
    "@types/node": "^8.5.7",
    "typescript": "^2.4.2"
  },
  "scripts": {
    "pretest": "tsc",
    "test": "rimraf ./obj && tsc && mocha \"obj/**/*.js\""
  }
}

tsconfig.json

{
    "compilerOptions": {
        "outDir": "./obj",
        "sourceMap": true,
        "noImplicitAny": false,
        "allowJs": false,
        "module": "commonjs",
        "moduleResolution": "node",
        "target": "es6",
        "experimentalDecorators": false,
        "types": [
            "node"
        ]
    },
    "include": [
        "mytest.spec.ts"
    ]
}