workers-runtime-validator

Validating Node.js API usage in Cloudflare Workers catches incompatible imports and patterns before deployment. This Skill automatically detects forbidden APIs like fs, buffer, and process during file creation and edits, flagging violations and guiding you toward Web API alternatives that Workers support.

Cloudflare Workers don't support Node.js modules like fs, path, buffer, and globals like process.env or require(). This Skill identifies these incompatibilities in real time, explaining why each is blocked and recommending Workers-compliant patterns such as using the env parameter for environment access.

Catch runtime errors before deployment by validating Workers compatibility during development. This Skill analyzes your code as you type, detecting forbidden APIs, improper module patterns, and async I/O issues, preventing surprises at deployment and guiding corrections immediately.

require() is not supported in Cloudflare Workers; you must use ES modules instead. This Skill flags require() statements and other CommonJS patterns, helping you migrate to ES module syntax that Workers environment enforces.

In Cloudflare Workers, access environment variables through the env parameter, not process.env. This Skill detects process.env usage and guides you to use the Worker-native env binding pattern for secure, runtime-compatible environment access.

Packages requiring Node.js runtime features—file system access, process globals, or CommonJS-only exports—are incompatible with Cloudflare Workers. This Skill validates your dependencies during development, alerting you to packages that won't work and helping you find Web API alternatives.