# `installed_node_modules` — synthetic test fixture
A minimal `node_modules/` tree of three packages (`react`, `left-pad`,
`lodash`) used by the `tirith ecosystem scan --installed` / `tirith package
scan --installed` integration smokes in
`crates/tirith/tests/cli_integration.rs`.
Each package directory holds only a tiny `package.json` (name + version + a
one-line description) — no source, no scripts, no transitive children. The
installed-tree walker discovers each package by its `package.json` and emits
one [`DeclaredDependency`] per top-level entry. That is all these fixtures
need to exercise; richer per-package signals are covered by unit tests on
the engine itself.