Installed-check verifies if a given npm package is installed in the current project. It offers a simple boolean result, useful for programmatically determining dependency presence. This helps streamline conditional logic in build scripts, integrations, or other tooling based on optional dependencies. Avoids requiring a full try...catch block around require() or import statements. It offers a clean and efficient solution for ensuring dependencies exist before attempting to utilize them.
The installed-check npm package has seen sporadic releases since February 2016. Releases were infrequent until 2022, with occasional bursts followed by periods of inactivity. 2022 and 2023 saw more frequent updates. The most recent release was in March 2024 and April 2024 and no releases have occurred since then as of September 12, 2025.
The npm package 'installed-check' experienced significant growth in downloads from March 2024 to August 2025, peaking in June 2025. While still being updated, September 2025 downloads show a considerable decrease, as the data is not yet complete for the month.
