Assess, plan, and execute phased codebase migrations with rollback procedures.
npx skills add https://github.com/jlaws/dotfiles --skill code-migration-jlaws
Please help me install this Agent Skill. Skill: code-migration Source: https://github.com/jlaws/dotfiles/tree/main/.agents/skills/migration/code-migration Command: npx skills add https://github.com/jlaws/dotfiles --skill code-migration-jlaws
Codebase migrations across frameworks, languages, versions, or platforms often suffer from scope creep, hidden dependencies, and rollout risk. This skill provides structured assessment, planning templates, and rollback patterns to guide safe, predictable migrations.
Outline a phased migration for a target codebase by performing assessment, selecting a strategy, and drafting the rollout with rollback criteria.
High-intent search queries and answers about installing and using this skill.
To safely migrate a large codebase, perform a formal assessment to quantify scope and risk, select an end-to-end strategy like Strangler Fig or Big Bang behind a boundary, and define phased rollout with rollback procedures to ensure predictable execution.
The best strategy for migrating complex frameworks involves applying an end-to-end approach such as Branch by Abstraction or Parallel Run behind a boundary, allowing you to isolate changes, manage hidden dependencies, and maintain rollback capabilities throughout the process.
Create a migration plan with proper rollback procedures by drafting phased execution with dependency order, defining milestones and success criteria, and establishing validation steps alongside rollback capabilities to recover from failures during the migration.
Use comparison tests and validation steps as your testing strategy when migrating codebases across versions, defining specific validation criteria and rollback procedures to verify behavior and recover from any failures during the phased rollout.
You should not use a big bang migration when your assessment reveals high scope complexity or significant rollout risk, as alternative strategies like Strangler Fig or Branch by Abstraction provide safer boundaries and better rollback capabilities for large codebases.
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