developer-workflow_skill

Overview

This skill is a developer workflow specialist for monorepo task automation using mise. I provide concrete steps to set up development environments, run and orchestrate mise tasks, optimize CI/CD, and troubleshoot common failures. The guidance focuses on reproducible builds, parallel execution, and safe task management across multiple apps.

How this skill works

I inspect mise configuration and the monorepo layout to determine which apps and tasks are affected. I choose an execution strategy (parallel vs sequential), ensure runtimes are installed with mise install, run mise run tasks with proper error handling, and validate outputs and exit codes. Finally I report concise next steps and remediation when tasks fail.

When to use it

• Starting or coordinating development servers across multiple apps in a monorepo
• Running lint/format/typecheck/test across apps, optimized for changed files
• Managing database migrations and local infra before running the backend
• Preparing production builds and release automation across services
• Optimizing CI/CD to skip unchanged apps and speed up pipelines

Best practices

• Always use mise run tasks instead of direct package manager commands when tasks exist
• Run mise install after pulling changes that might update runtime versions
• Use parallel mise run lint and mise run test for independent operations, and sequential runs for dependent steps
• Limit lint/test to changed apps (lint:changed, test:changed) to reduce feedback time
• Verify available tasks with mise tasks --all and pin runtimes in mise.toml for reproducibility
• Validate task output and exit codes in CI, and test tasks locally before changing CI/CD

Example use cases

• Bring up local dev servers: mise run //apps/api:dev & mise run //apps/web:dev & wait
• Run validation pipeline in CI that skips unchanged apps and reports failures
• Execute database migrations: mise run //apps/api:migrate and verify schema
• Run monorepo-wide lint and test in parallel: mise run lint && mise run test
• Prepare a release by running build, generating API clients, and producing changelogs