// Development tooling: Deno runtime, JSR package registry, deno.json and package.json configuration, and editor settings. Use when setting up projects, choosing packages, or configuring build tools.
JavaScript/TypeScript conventions: ES modules, Deno runtime, React patterns, async/await, and type handling. Use when writing .ts, .tsx, or .js files, configuring imports, or building React components.
Agent roles, safety rules, file ownership, and cross-package change protocol. Use when AI agents work on this codebase, plan multi-package changes, or need boundary guidance.
Security practices: secrets in env vars, input validation, SSRF prevention, error sanitization, and production hardening. Use when handling authentication, secrets, user input, or preparing production deployments.
System architecture: ES modules, hexagonal architecture, project structure, ADRs, and testing strategy. Use when designing systems, planning directory layout, writing ADRs, or reviewing architecture.
CI/CD operations: GitHub Actions, Kubernetes, ArgoCD, and CI timeout configuration. Use when configuring pipelines, debugging deployments, or working with GitHub Actions. Do NOT use for general development workflow.
Code quality: error handling, validation, logging, DRY, and self-documenting code. Use when writing or reviewing code quality, handling errors, or validating inputs. Do NOT use for language-specific syntax (use javascript-practices or go-practices).
| name | tooling-standards |
| description | Development tooling: Deno runtime, JSR package registry, deno.json and package.json configuration, and editor settings. Use when setting up projects, choosing packages, or configuring build tools. |
Standards for Deno runtime, JSR registry, and project configuration.
pnpm install # install dependencies
deno fmt # format code
deno lint # lint code
deno test # run tests
Package manager: Use pnpm install/add for dependencies; use pnpm add -g eser for the CLI tool
Deno runtime: Use deno fmt/lint/test/check/task for formatting, linting, testing, and running tasks
Config files:
package.json for dependencies and scriptstsconfig.json for TypeScriptdeno.json only for fmt/lint settingsRegistry: Prefer jsr.io over npm. Use npm:@jsr/ prefix in package.json
Packages: JSR when available, npm when no JSR alternative exists
See rules.md for complete guidelines with examples.