Observed arrival · 2026-09-10

Can I still require() it?

canirequire.com Observed source

Editorial interest 86/100 Selection signal · not a rating of the site

A compatibility database for checking whether npm packages are ESM-only, dual-format, or still usable with CommonJS require().

Landing page captured for the 2026-09-10 issue.

Field notes

canirequire combines npm metadata with execution tests rather than inferring module format from package names alone. Its dataset separates 332 ESM-only packages, 313 dual-format packages, and 1,027 CommonJS packages, while individual records expose a runtime matrix and suggested next steps. The site also supplies Markdown and JSON URL patterns, an all-package search index, and an llms.txt map for scripts or automated agents.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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