Accumulating scripts to avoid running multiple times

[brettz9]

This request can probably be best explained with an example.

{
    "src": "npm test && npm run build && npm run check-readme",
    "test": "npm test && npm run create-readme",
}

...I don't want to re-run test if both src and test files are modified.

Is there a way it could be recognized such that npm test wouldn't need to be repeated?