Query cumulative historical downloads of npm packages, fetch data from official npm API, pure frontend, no backend required.
• Data source: official npm api.npmjs.org & registry.npmjs.org
• Statistics start from the first publish date of the package, but npm download metrics are only available from ~2015.
• Download count ≠ unique users. CI/automated repeated installs will be counted multiple times.
• Network: mainland China users may experience timeout when accessing npm official API.
• Author batch query: npm registry API returns public packages only, rate limit may cause partial failures.