# `mix npm.doctor`
[🔗](https://github.com/elixir-volt/npm_ex/blob/v0.7.4/lib/mix/tasks/npm.doctor.ex#L1)

Run diagnostics on the npm installation.

    mix npm.doctor

Checks:
- Package.json validity
- Lockfile freshness
- node_modules completeness
- Platform compatibility
- Lifecycle scripts
- Deprecated packages

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*Consult [api-reference.md](api-reference.md) for complete listing*