vscode-extension-samples/webpack-sample/tsconfig.json

{
    "compilerOptions": {
        "module": "es6",
        "target": "es6",
        "outDir": "out",
        "lib": [
            "es6"
        ],
        "sourceMap": true,
        "rootDir": "."
    },
    "include": [
        "src/**/*.ts",
        "./node_modules/vscode/vscode.d.ts",
    ]
}