// Clone my demo repo then skip to 'Terminal' steps or manually re-create it
git clone https://github.com/seikho/intellisense-repro

// .vscode/settings.json
{
    "typescript.tsdk": "node_modules/typescript/lib"
}

// tsconfig.json
{
    "compilerOptions": {
        "module": "commonjs",
        "target": "es5"
    },
    "exclude": [
        "node_modules"
    ]
}

// package.json
{
  "main": "index.js",
  "devDependencies": {
    "@types/node": "^6.0.34",
    "typescript": "^2.1.0-dev.20160816"
  }
}

// index.ts
const foo = 1;
foo;

// Terminal
npm install
code .

// Mouse
Hover things