pulumi/tests/integration/project_main/a/path/to/main/package.json

{
    "name": "project_main",
    "main": "bin/index.js",
    "typings": "bin/index.d.ts",
    "scripts": {
        "build": "tsc"
    },
    "devDependencies": {
        "typescript": "^2.5.3"
    }
}