defined provides a concise and reliable way to check if a variable is defined (not null or undefined) in JavaScript. It offers a single, straightforward function, defined(value), streamlining code and eliminating boilerplate typeof checks. defined enhances readability and reduces potential errors caused by unexpected null/undefined values, promoting more robust and predictable JavaScript applications. It's particularly useful for simplifying conditional logic and parameter validation.
The npm package was initially released in November 2012 (version 0.0.0). A subsequent release (1.0.0) occurred in April 2015. Another release (1.0.1) was published in October 2022. There have been no releases since then, as of September 11, 2025. The package exhibits infrequent and sporadic release activity.
NPM package downloads show growth from March 2024 to July 2025, peaking at over 24 million. Numbers fluctuated between 12M and 18M for most months. August 2025 saw a decrease, and September 2025 downloads (partial data) are significantly lower, suggesting a potential trend shift.
