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Component Library Template for Product Managers

A component library planning template for design and engineering teams. Covers component inventory, prioritization, API design, versioning strategy,...

Updated 2026-03-05
Component Library
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Frequently Asked Questions

How many components should Wave 1 include?+
Start with 6-10 components that cover the highest-frequency, highest-inconsistency patterns. Shipping fewer components faster builds momentum and demonstrates value to stakeholders. If Wave 1 takes longer than 6 weeks, you have too many components in it. Cut scope and move components to Wave 2.
Should we build from scratch or use a headless library?+
Headless libraries like Radix UI, Headless UI, or React Aria provide accessible behavior without styling. They handle keyboard navigation, focus management, and ARIA attributes for complex components (select, combobox, dialog, popover). Building these from scratch takes 3-5x longer and introduces accessibility bugs. Use headless libraries for complex interactive components and build simple components (button, badge, avatar) from scratch.
How do we convince teams to adopt the library instead of building their own components?+
Adoption is driven by developer experience, not mandates. The library must be easier to use than building from scratch. That means excellent documentation, copy-pasteable examples, fast install times, and responsive bug fixes. Track adoption with metrics (one-off count, coverage %) and share them monthly. When a team builds a one-off that the library already covers, ask why. The answer reveals gaps in documentation, API design, or missing variants.
What is the right level of customization to allow?+
Allow theming through tokens (colors, spacing, typography). Allow structural customization through composition (compound components, render props). Avoid allowing arbitrary style overrides through `className` injection for core visual properties. The more you allow consumers to customize, the less visual consistency you get. The escape hatch (`className` prop) should be available for edge cases but not the primary customization mechanism.
How do we handle breaking changes?+
Follow semantic versioning strictly. Announce breaking changes 2 releases in advance. Provide automated codemods where possible (tools like jscodeshift). Support the previous major version with security fixes for 6 months. Ship a migration guide that covers every breaking change with before/after code examples. Never merge a breaking change without a corresponding migration path. ---

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